./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy11.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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:54:32,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:54:32,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:54:32,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:54:32,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:54:32,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:54:32,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:54:32,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:54:32,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:54:32,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:54:32,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:54:32,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:54:32,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:54:32,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:54:32,545 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:54:32,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:54:32,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:54:32,547 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:54:32,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:54:32,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:54:32,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:54:32,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:54:32,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:54:32,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:54:32,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:54:32,549 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:54:32,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:54:32,550 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:54:32,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:54:32,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:54:32,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:54:32,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:54:32,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:32,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:54:32,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:54:32,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:54:32,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:54:32,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:54:32,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:54:32,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:54:32,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:54:32,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:54:32,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2024-11-22 13:54:32,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:54:32,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:54:32,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:54:32,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:54:32,866 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:54:32,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-22 13:54:34,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:54:34,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:54:34,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-22 13:54:34,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fade665d/140d92b214944619b3dc8c85a68af382/FLAG98d9c447a [2024-11-22 13:54:34,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fade665d/140d92b214944619b3dc8c85a68af382 [2024-11-22 13:54:34,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:54:34,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:54:34,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:34,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:54:34,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:54:34,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdb638e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34, skipping insertion in model container [2024-11-22 13:54:34,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:54:34,685 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/test-easy11.wvr.c[1841,1854] [2024-11-22 13:54:34,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:34,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:54:34,715 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/test-easy11.wvr.c[1841,1854] [2024-11-22 13:54:34,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:34,733 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:54:34,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34 WrapperNode [2024-11-22 13:54:34,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:34,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:34,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:54:34,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:54:34,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,763 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2024-11-22 13:54:34,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:34,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:54:34,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:54:34,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:54:34,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,775 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,787 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]. [2024-11-22 13:54:34,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:54:34,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:54:34,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:54:34,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:54:34,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (1/1) ... [2024-11-22 13:54:34,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:34,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:34,825 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) [2024-11-22 13:54:34,827 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 [2024-11-22 13:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:54:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:54:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:54:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:54:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:54:34,866 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:54:34,933 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:54:34,935 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:54:35,086 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:54:35,086 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:54:35,190 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:54:35,190 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 13:54:35,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:35 BoogieIcfgContainer [2024-11-22 13:54:35,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:54:35,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:54:35,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:54:35,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:54:35,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:54:34" (1/3) ... [2024-11-22 13:54:35,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ac0ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:35, skipping insertion in model container [2024-11-22 13:54:35,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:34" (2/3) ... [2024-11-22 13:54:35,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ac0ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:35, skipping insertion in model container [2024-11-22 13:54:35,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:35" (3/3) ... [2024-11-22 13:54:35,201 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-11-22 13:54:35,215 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:54:35,215 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:54:35,215 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:54:35,246 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:54:35,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-22 13:54:35,316 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-22 13:54:35,317 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:54:35,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-22 13:54:35,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-22 13:54:35,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-22 13:54:35,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:54:35,337 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;@340438c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:54:35,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:54:35,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:54:35,347 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-22 13:54:35,347 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:54:35,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:35,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:35,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:35,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -414190158, now seen corresponding path program 1 times [2024-11-22 13:54:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597663113] [2024-11-22 13:54:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:35,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:35,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597663113] [2024-11-22 13:54:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597663113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:35,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:35,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364147140] [2024-11-22 13:54:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:35,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:35,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:35,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:35,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:35,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:35,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:36,264 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-11-22 13:54:36,264 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-22 13:54:36,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 609 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2024-11-22 13:54:36,269 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-11-22 13:54:36,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2024-11-22 13:54:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-22 13:54:36,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-22 13:54:36,284 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2024-11-22 13:54:36,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2024-11-22 13:54:36,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:36,290 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2024-11-22 13:54:36,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-22 13:54:36,295 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-11-22 13:54:36,295 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2024-11-22 13:54:36,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:36,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:36,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:36,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:54:36,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:36,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash -349033444, now seen corresponding path program 2 times [2024-11-22 13:54:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124514866] [2024-11-22 13:54:36,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:36,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:36,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124514866] [2024-11-22 13:54:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124514866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:36,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:36,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:36,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556889508] [2024-11-22 13:54:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:36,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:36,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:36,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:36,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:36,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:36,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:36,787 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2024-11-22 13:54:36,788 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-22 13:54:36,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 600 event pairs, 15 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2024-11-22 13:54:36,791 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-11-22 13:54:36,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2024-11-22 13:54:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-22 13:54:36,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-22 13:54:36,794 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2024-11-22 13:54:36,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2024-11-22 13:54:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:36,799 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2024-11-22 13:54:36,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-11-22 13:54:36,800 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-11-22 13:54:36,803 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2024-11-22 13:54:36,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:36,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:36,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:36,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:54:36,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:36,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1600878094, now seen corresponding path program 3 times [2024-11-22 13:54:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83229809] [2024-11-22 13:54:36,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:36,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:54:36,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83229809] [2024-11-22 13:54:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83229809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:36,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319876104] [2024-11-22 13:54:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:37,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:37,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:37,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:37,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:37,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:37,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:37,249 INFO L124 PetriNetUnfolderBase]: 120/218 cut-off events. [2024-11-22 13:54:37,249 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-22 13:54:37,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 218 events. 120/218 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 676 event pairs, 10 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 698. Up to 119 conditions per place. [2024-11-22 13:54:37,252 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 10/68 dead transitions. [2024-11-22 13:54:37,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2024-11-22 13:54:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-22 13:54:37,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-22 13:54:37,254 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 87 transitions. [2024-11-22 13:54:37,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2024-11-22 13:54:37,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 422 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:37,258 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 256 flow [2024-11-22 13:54:37,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-22 13:54:37,259 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-11-22 13:54:37,260 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 256 flow [2024-11-22 13:54:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:37,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:37,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:37,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:54:37,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:37,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2082667952, now seen corresponding path program 4 times [2024-11-22 13:54:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591767333] [2024-11-22 13:54:37,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:37,280 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:37,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:37,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:37,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591767333] [2024-11-22 13:54:37,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591767333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:37,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789296650] [2024-11-22 13:54:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:37,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:37,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:37,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:37,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:37,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:37,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:37,781 INFO L124 PetriNetUnfolderBase]: 194/329 cut-off events. [2024-11-22 13:54:37,781 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-22 13:54:37,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 329 events. 194/329 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1075 event pairs, 32 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1203. Up to 140 conditions per place. [2024-11-22 13:54:37,787 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 35 changer transitions 10/90 dead transitions. [2024-11-22 13:54:37,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 736 flow [2024-11-22 13:54:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:54:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:54:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-11-22 13:54:37,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-22 13:54:37,789 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 256 flow. Second operand 8 states and 90 transitions. [2024-11-22 13:54:37,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 736 flow [2024-11-22 13:54:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 660 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:37,794 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 489 flow [2024-11-22 13:54:37,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-11-22 13:54:37,795 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2024-11-22 13:54:37,797 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 489 flow [2024-11-22 13:54:37,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:37,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:37,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:37,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:54:37,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:37,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash 351115436, now seen corresponding path program 5 times [2024-11-22 13:54:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466365098] [2024-11-22 13:54:37,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:37,810 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:37,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466365098] [2024-11-22 13:54:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466365098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123127114] [2024-11-22 13:54:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:37,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:37,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:37,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:37,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:37,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:37,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:38,197 INFO L124 PetriNetUnfolderBase]: 200/343 cut-off events. [2024-11-22 13:54:38,199 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-22 13:54:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 343 events. 200/343 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1231 event pairs, 14 based on Foata normal form. 1/344 useless extension candidates. Maximal degree in co-relation 1440. Up to 181 conditions per place. [2024-11-22 13:54:38,202 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 53 selfloop transitions, 30 changer transitions 10/94 dead transitions. [2024-11-22 13:54:38,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 845 flow [2024-11-22 13:54:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-22 13:54:38,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-22 13:54:38,205 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 489 flow. Second operand 9 states and 90 transitions. [2024-11-22 13:54:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 845 flow [2024-11-22 13:54:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 812 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:38,211 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 538 flow [2024-11-22 13:54:38,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-11-22 13:54:38,212 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 37 predicate places. [2024-11-22 13:54:38,212 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 538 flow [2024-11-22 13:54:38,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:38,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:38,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:38,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:54:38,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:38,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1172063546, now seen corresponding path program 6 times [2024-11-22 13:54:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811024310] [2024-11-22 13:54:38,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:38,221 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:54:38,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811024310] [2024-11-22 13:54:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811024310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:38,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733915193] [2024-11-22 13:54:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:38,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:38,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:38,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:38,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:38,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:38,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:38,533 INFO L124 PetriNetUnfolderBase]: 217/369 cut-off events. [2024-11-22 13:54:38,533 INFO L125 PetriNetUnfolderBase]: For 1364/1364 co-relation queries the response was YES. [2024-11-22 13:54:38,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 369 events. 217/369 cut-off events. For 1364/1364 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1310 event pairs, 18 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1680. Up to 198 conditions per place. [2024-11-22 13:54:38,537 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 38 changer transitions 9/97 dead transitions. [2024-11-22 13:54:38,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 976 flow [2024-11-22 13:54:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-22 13:54:38,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-22 13:54:38,538 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 538 flow. Second operand 9 states and 86 transitions. [2024-11-22 13:54:38,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 976 flow [2024-11-22 13:54:38,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 886 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-22 13:54:38,545 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 707 flow [2024-11-22 13:54:38,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=707, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2024-11-22 13:54:38,546 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 41 predicate places. [2024-11-22 13:54:38,546 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 707 flow [2024-11-22 13:54:38,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:38,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:38,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:38,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:54:38,547 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:38,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:38,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2081327682, now seen corresponding path program 7 times [2024-11-22 13:54:38,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302094224] [2024-11-22 13:54:38,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:54:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302094224] [2024-11-22 13:54:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302094224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247605608] [2024-11-22 13:54:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:38,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:38,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:38,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:38,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:38,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 707 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:38,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:38,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:38,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:38,905 INFO L124 PetriNetUnfolderBase]: 215/367 cut-off events. [2024-11-22 13:54:38,905 INFO L125 PetriNetUnfolderBase]: For 1598/1598 co-relation queries the response was YES. [2024-11-22 13:54:38,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 367 events. 215/367 cut-off events. For 1598/1598 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1328 event pairs, 15 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1768. Up to 196 conditions per place. [2024-11-22 13:54:38,908 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 56 selfloop transitions, 34 changer transitions 11/102 dead transitions. [2024-11-22 13:54:38,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 1093 flow [2024-11-22 13:54:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-22 13:54:38,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-22 13:54:38,909 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 707 flow. Second operand 9 states and 85 transitions. [2024-11-22 13:54:38,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 1093 flow [2024-11-22 13:54:38,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 1027 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:38,916 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 698 flow [2024-11-22 13:54:38,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=698, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-22 13:54:38,917 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-22 13:54:38,917 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 698 flow [2024-11-22 13:54:38,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:38,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:38,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:38,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:54:38,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:38,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1759090946, now seen corresponding path program 8 times [2024-11-22 13:54:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57506627] [2024-11-22 13:54:38,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:38,929 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:38,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:39,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:39,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57506627] [2024-11-22 13:54:39,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57506627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:39,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:39,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670997352] [2024-11-22 13:54:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:39,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:39,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:39,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:39,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:39,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:39,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:39,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:39,313 INFO L124 PetriNetUnfolderBase]: 213/364 cut-off events. [2024-11-22 13:54:39,314 INFO L125 PetriNetUnfolderBase]: For 1655/1655 co-relation queries the response was YES. [2024-11-22 13:54:39,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 364 events. 213/364 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1303 event pairs, 18 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1743. Up to 194 conditions per place. [2024-11-22 13:54:39,317 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 37 changer transitions 10/97 dead transitions. [2024-11-22 13:54:39,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 1039 flow [2024-11-22 13:54:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-22 13:54:39,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-22 13:54:39,319 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 698 flow. Second operand 9 states and 87 transitions. [2024-11-22 13:54:39,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 1039 flow [2024-11-22 13:54:39,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 965 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-22 13:54:39,326 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 748 flow [2024-11-22 13:54:39,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=748, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-11-22 13:54:39,328 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 46 predicate places. [2024-11-22 13:54:39,328 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 748 flow [2024-11-22 13:54:39,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:39,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:39,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:39,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:54:39,329 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:39,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1257476776, now seen corresponding path program 9 times [2024-11-22 13:54:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:39,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451499483] [2024-11-22 13:54:39,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:39,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:39,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:54:39,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451499483] [2024-11-22 13:54:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451499483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:39,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:39,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508842920] [2024-11-22 13:54:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:39,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:39,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:39,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:39,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 748 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:39,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:39,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:39,695 INFO L124 PetriNetUnfolderBase]: 222/380 cut-off events. [2024-11-22 13:54:39,695 INFO L125 PetriNetUnfolderBase]: For 1802/1802 co-relation queries the response was YES. [2024-11-22 13:54:39,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 380 events. 222/380 cut-off events. For 1802/1802 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1388 event pairs, 24 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1835. Up to 198 conditions per place. [2024-11-22 13:54:39,698 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 51 selfloop transitions, 38 changer transitions 9/99 dead transitions. [2024-11-22 13:54:39,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 99 transitions, 1079 flow [2024-11-22 13:54:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-22 13:54:39,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-22 13:54:39,699 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 748 flow. Second operand 9 states and 88 transitions. [2024-11-22 13:54:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 99 transitions, 1079 flow [2024-11-22 13:54:39,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 1009 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-22 13:54:39,706 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 788 flow [2024-11-22 13:54:39,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-22 13:54:39,708 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2024-11-22 13:54:39,708 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 788 flow [2024-11-22 13:54:39,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:39,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:39,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:39,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:54:39,710 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:39,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 509328288, now seen corresponding path program 10 times [2024-11-22 13:54:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251988855] [2024-11-22 13:54:39,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:39,719 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:39,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:39,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251988855] [2024-11-22 13:54:39,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251988855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:39,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:39,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309153905] [2024-11-22 13:54:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:39,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:39,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:39,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 788 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:39,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:39,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:40,141 INFO L124 PetriNetUnfolderBase]: 310/523 cut-off events. [2024-11-22 13:54:40,141 INFO L125 PetriNetUnfolderBase]: For 2941/2941 co-relation queries the response was YES. [2024-11-22 13:54:40,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 523 events. 310/523 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2093 event pairs, 46 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 2731. Up to 242 conditions per place. [2024-11-22 13:54:40,146 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 65 selfloop transitions, 55 changer transitions 10/131 dead transitions. [2024-11-22 13:54:40,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 1574 flow [2024-11-22 13:54:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-11-22 13:54:40,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:54:40,148 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 788 flow. Second operand 9 states and 99 transitions. [2024-11-22 13:54:40,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 1574 flow [2024-11-22 13:54:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 1426 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-22 13:54:40,158 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 1174 flow [2024-11-22 13:54:40,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1174, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2024-11-22 13:54:40,159 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-22 13:54:40,160 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 1174 flow [2024-11-22 13:54:40,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:40,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:40,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:40,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:54:40,162 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:40,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash 193689538, now seen corresponding path program 11 times [2024-11-22 13:54:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856734628] [2024-11-22 13:54:40,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:40,172 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:40,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:40,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856734628] [2024-11-22 13:54:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856734628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450523209] [2024-11-22 13:54:40,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:40,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:40,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:40,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:40,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:40,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:40,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:40,513 INFO L124 PetriNetUnfolderBase]: 305/518 cut-off events. [2024-11-22 13:54:40,514 INFO L125 PetriNetUnfolderBase]: For 3145/3145 co-relation queries the response was YES. [2024-11-22 13:54:40,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2857 conditions, 518 events. 305/518 cut-off events. For 3145/3145 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2063 event pairs, 31 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 2824. Up to 274 conditions per place. [2024-11-22 13:54:40,518 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 55 selfloop transitions, 52 changer transitions 14/122 dead transitions. [2024-11-22 13:54:40,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 122 transitions, 1539 flow [2024-11-22 13:54:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-22 13:54:40,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-22 13:54:40,522 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 1174 flow. Second operand 9 states and 85 transitions. [2024-11-22 13:54:40,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 122 transitions, 1539 flow [2024-11-22 13:54:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 1476 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:40,533 INFO L231 Difference]: Finished difference. Result has 84 places, 95 transitions, 1169 flow [2024-11-22 13:54:40,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1169, PETRI_PLACES=84, PETRI_TRANSITIONS=95} [2024-11-22 13:54:40,538 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2024-11-22 13:54:40,538 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 95 transitions, 1169 flow [2024-11-22 13:54:40,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:40,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:40,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:40,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:54:40,539 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:40,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:40,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1707293348, now seen corresponding path program 12 times [2024-11-22 13:54:40,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973919986] [2024-11-22 13:54:40,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:40,546 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:54:40,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:40,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:40,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973919986] [2024-11-22 13:54:40,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973919986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:40,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:40,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:40,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920490260] [2024-11-22 13:54:40,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:40,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:40,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:40,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:40,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:40,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 95 transitions, 1169 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:40,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:40,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:40,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:40,889 INFO L124 PetriNetUnfolderBase]: 289/488 cut-off events. [2024-11-22 13:54:40,889 INFO L125 PetriNetUnfolderBase]: For 3188/3188 co-relation queries the response was YES. [2024-11-22 13:54:40,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 488 events. 289/488 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1883 event pairs, 30 based on Foata normal form. 1/489 useless extension candidates. Maximal degree in co-relation 2672. Up to 254 conditions per place. [2024-11-22 13:54:40,894 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 53 selfloop transitions, 49 changer transitions 13/116 dead transitions. [2024-11-22 13:54:40,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 1510 flow [2024-11-22 13:54:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-22 13:54:40,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-22 13:54:40,896 INFO L175 Difference]: Start difference. First operand has 84 places, 95 transitions, 1169 flow. Second operand 9 states and 85 transitions. [2024-11-22 13:54:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 1510 flow [2024-11-22 13:54:40,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 1400 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-22 13:54:40,907 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 1101 flow [2024-11-22 13:54:40,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1101, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-11-22 13:54:40,907 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-11-22 13:54:40,907 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 1101 flow [2024-11-22 13:54:40,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:40,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:40,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:40,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:54:40,908 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:40,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2030870354, now seen corresponding path program 13 times [2024-11-22 13:54:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890314106] [2024-11-22 13:54:40,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:54:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:41,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890314106] [2024-11-22 13:54:41,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890314106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:41,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:41,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:41,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238784547] [2024-11-22 13:54:41,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:41,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:41,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:41,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 1101 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:41,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:41,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:41,256 INFO L124 PetriNetUnfolderBase]: 309/518 cut-off events. [2024-11-22 13:54:41,256 INFO L125 PetriNetUnfolderBase]: For 3822/3822 co-relation queries the response was YES. [2024-11-22 13:54:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 518 events. 309/518 cut-off events. For 3822/3822 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1974 event pairs, 34 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 2854. Up to 264 conditions per place. [2024-11-22 13:54:41,261 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 58 selfloop transitions, 55 changer transitions 12/126 dead transitions. [2024-11-22 13:54:41,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1688 flow [2024-11-22 13:54:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-22 13:54:41,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-22 13:54:41,263 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 1101 flow. Second operand 9 states and 86 transitions. [2024-11-22 13:54:41,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1688 flow [2024-11-22 13:54:41,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 126 transitions, 1562 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:41,275 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 1336 flow [2024-11-22 13:54:41,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1336, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-11-22 13:54:41,276 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 61 predicate places. [2024-11-22 13:54:41,276 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 1336 flow [2024-11-22 13:54:41,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:41,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:41,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:41,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:54:41,277 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:41,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1495640552, now seen corresponding path program 14 times [2024-11-22 13:54:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502024735] [2024-11-22 13:54:41,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:41,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:41,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:41,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:41,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502024735] [2024-11-22 13:54:41,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502024735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:41,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:41,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999640321] [2024-11-22 13:54:41,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:41,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:41,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:41,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:41,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 1336 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:41,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:41,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:41,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:41,659 INFO L124 PetriNetUnfolderBase]: 305/514 cut-off events. [2024-11-22 13:54:41,659 INFO L125 PetriNetUnfolderBase]: For 4431/4431 co-relation queries the response was YES. [2024-11-22 13:54:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3034 conditions, 514 events. 305/514 cut-off events. For 4431/4431 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1965 event pairs, 40 based on Foata normal form. 1/515 useless extension candidates. Maximal degree in co-relation 2998. Up to 260 conditions per place. [2024-11-22 13:54:41,665 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 57 selfloop transitions, 56 changer transitions 12/126 dead transitions. [2024-11-22 13:54:41,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 126 transitions, 1779 flow [2024-11-22 13:54:41,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-22 13:54:41,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-22 13:54:41,666 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 1336 flow. Second operand 9 states and 85 transitions. [2024-11-22 13:54:41,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 126 transitions, 1779 flow [2024-11-22 13:54:41,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 1671 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:41,680 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 1407 flow [2024-11-22 13:54:41,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-11-22 13:54:41,681 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2024-11-22 13:54:41,681 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 1407 flow [2024-11-22 13:54:41,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:41,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:41,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:41,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:54:41,682 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:41,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1549564086, now seen corresponding path program 15 times [2024-11-22 13:54:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:41,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887545950] [2024-11-22 13:54:41,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:41,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:54:41,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:41,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887545950] [2024-11-22 13:54:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887545950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:41,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:41,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916085352] [2024-11-22 13:54:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:41,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:41,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:41,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 1407 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:41,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:41,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:41,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:42,092 INFO L124 PetriNetUnfolderBase]: 321/540 cut-off events. [2024-11-22 13:54:42,092 INFO L125 PetriNetUnfolderBase]: For 4962/4962 co-relation queries the response was YES. [2024-11-22 13:54:42,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 540 events. 321/540 cut-off events. For 4962/4962 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2100 event pairs, 41 based on Foata normal form. 1/541 useless extension candidates. Maximal degree in co-relation 3188. Up to 266 conditions per place. [2024-11-22 13:54:42,097 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 60 selfloop transitions, 56 changer transitions 11/128 dead transitions. [2024-11-22 13:54:42,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 1834 flow [2024-11-22 13:54:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-22 13:54:42,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-22 13:54:42,099 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 1407 flow. Second operand 9 states and 87 transitions. [2024-11-22 13:54:42,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 1834 flow [2024-11-22 13:54:42,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 128 transitions, 1729 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-22 13:54:42,113 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 1449 flow [2024-11-22 13:54:42,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1449, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-11-22 13:54:42,114 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 71 predicate places. [2024-11-22 13:54:42,114 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 1449 flow [2024-11-22 13:54:42,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:42,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:42,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:42,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:54:42,115 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:42,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash -420390402, now seen corresponding path program 16 times [2024-11-22 13:54:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523971017] [2024-11-22 13:54:42,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:42,121 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:42,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523971017] [2024-11-22 13:54:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523971017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:42,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526139795] [2024-11-22 13:54:42,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:42,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:42,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:42,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:42,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:42,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:42,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:42,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:42,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:42,480 INFO L124 PetriNetUnfolderBase]: 329/558 cut-off events. [2024-11-22 13:54:42,481 INFO L125 PetriNetUnfolderBase]: For 5219/5219 co-relation queries the response was YES. [2024-11-22 13:54:42,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 558 events. 329/558 cut-off events. For 5219/5219 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2245 event pairs, 58 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 3322. Up to 222 conditions per place. [2024-11-22 13:54:42,486 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 69 selfloop transitions, 54 changer transitions 11/135 dead transitions. [2024-11-22 13:54:42,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 135 transitions, 1977 flow [2024-11-22 13:54:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-22 13:54:42,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-22 13:54:42,488 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 1449 flow. Second operand 9 states and 88 transitions. [2024-11-22 13:54:42,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 135 transitions, 1977 flow [2024-11-22 13:54:42,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 135 transitions, 1850 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:42,503 INFO L231 Difference]: Finished difference. Result has 100 places, 107 transitions, 1531 flow [2024-11-22 13:54:42,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=100, PETRI_TRANSITIONS=107} [2024-11-22 13:54:42,504 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 76 predicate places. [2024-11-22 13:54:42,505 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 107 transitions, 1531 flow [2024-11-22 13:54:42,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:42,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:42,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:42,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:54:42,506 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:42,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1464595932, now seen corresponding path program 17 times [2024-11-22 13:54:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168705881] [2024-11-22 13:54:42,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:42,515 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:54:42,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168705881] [2024-11-22 13:54:42,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168705881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:42,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:42,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:54:42,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037516159] [2024-11-22 13:54:42,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:42,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:54:42,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:54:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:42,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 107 transitions, 1531 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:42,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:42,843 INFO L124 PetriNetUnfolderBase]: 348/591 cut-off events. [2024-11-22 13:54:42,843 INFO L125 PetriNetUnfolderBase]: For 6080/6080 co-relation queries the response was YES. [2024-11-22 13:54:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3587 conditions, 591 events. 348/591 cut-off events. For 6080/6080 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2396 event pairs, 41 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 3545. Up to 322 conditions per place. [2024-11-22 13:54:42,849 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 74 selfloop transitions, 50 changer transitions 10/135 dead transitions. [2024-11-22 13:54:42,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 2051 flow [2024-11-22 13:54:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-22 13:54:42,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-22 13:54:42,850 INFO L175 Difference]: Start difference. First operand has 100 places, 107 transitions, 1531 flow. Second operand 9 states and 84 transitions. [2024-11-22 13:54:42,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 2051 flow [2024-11-22 13:54:42,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 1949 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:42,868 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 1583 flow [2024-11-22 13:54:42,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1583, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2024-11-22 13:54:42,868 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 81 predicate places. [2024-11-22 13:54:42,868 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 1583 flow [2024-11-22 13:54:42,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-11-22 13:54:42,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:42,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:42,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:54:42,869 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:42,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1185568184, now seen corresponding path program 1 times [2024-11-22 13:54:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:42,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573904968] [2024-11-22 13:54:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573904968] [2024-11-22 13:54:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573904968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291341164] [2024-11-22 13:54:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:42,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:42,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:42,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 1583 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) [2024-11-22 13:54:42,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:42,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:42,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:43,071 INFO L124 PetriNetUnfolderBase]: 313/585 cut-off events. [2024-11-22 13:54:43,071 INFO L125 PetriNetUnfolderBase]: For 6653/6653 co-relation queries the response was YES. [2024-11-22 13:54:43,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 585 events. 313/585 cut-off events. For 6653/6653 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2722 event pairs, 30 based on Foata normal form. 12/595 useless extension candidates. Maximal degree in co-relation 3442. Up to 142 conditions per place. [2024-11-22 13:54:43,078 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 58 selfloop transitions, 41 changer transitions 6/141 dead transitions. [2024-11-22 13:54:43,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 141 transitions, 2045 flow [2024-11-22 13:54:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:54:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:54:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-22 13:54:43,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-22 13:54:43,079 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 1583 flow. Second operand 7 states and 84 transitions. [2024-11-22 13:54:43,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 141 transitions, 2045 flow [2024-11-22 13:54:43,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1914 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-11-22 13:54:43,098 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 1666 flow [2024-11-22 13:54:43,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1666, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2024-11-22 13:54:43,099 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 82 predicate places. [2024-11-22 13:54:43,099 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 1666 flow [2024-11-22 13:54:43,100 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) [2024-11-22 13:54:43,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:43,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:43,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:54:43,100 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:43,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1052236876, now seen corresponding path program 2 times [2024-11-22 13:54:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013907194] [2024-11-22 13:54:43,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:43,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:43,110 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:43,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:43,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013907194] [2024-11-22 13:54:43,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013907194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:43,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:43,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:43,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270070411] [2024-11-22 13:54:43,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:43,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:43,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:43,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:43,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 1666 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) [2024-11-22 13:54:43,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:43,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:43,294 INFO L124 PetriNetUnfolderBase]: 333/620 cut-off events. [2024-11-22 13:54:43,295 INFO L125 PetriNetUnfolderBase]: For 8311/8311 co-relation queries the response was YES. [2024-11-22 13:54:43,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3875 conditions, 620 events. 333/620 cut-off events. For 8311/8311 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2909 event pairs, 76 based on Foata normal form. 8/623 useless extension candidates. Maximal degree in co-relation 3348. Up to 268 conditions per place. [2024-11-22 13:54:43,302 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 75 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-11-22 13:54:43,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 2085 flow [2024-11-22 13:54:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-22 13:54:43,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2024-11-22 13:54:43,303 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 1666 flow. Second operand 5 states and 72 transitions. [2024-11-22 13:54:43,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 2085 flow [2024-11-22 13:54:43,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 140 transitions, 1957 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:43,325 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 1681 flow [2024-11-22 13:54:43,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1681, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2024-11-22 13:54:43,325 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 84 predicate places. [2024-11-22 13:54:43,326 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 1681 flow [2024-11-22 13:54:43,326 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) [2024-11-22 13:54:43,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:43,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:43,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:54:43,326 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:43,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 609413541, now seen corresponding path program 1 times [2024-11-22 13:54:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011934615] [2024-11-22 13:54:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011934615] [2024-11-22 13:54:43,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011934615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677532023] [2024-11-22 13:54:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:43,361 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) [2024-11-22 13:54:43,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:54:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:43,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:54:43,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677532023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:43,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-22 13:54:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904730933] [2024-11-22 13:54:43,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:43,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:54:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:54:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:54:43,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:43,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 1681 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2024-11-22 13:54:43,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:43,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:43,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:43,666 INFO L124 PetriNetUnfolderBase]: 336/627 cut-off events. [2024-11-22 13:54:43,666 INFO L125 PetriNetUnfolderBase]: For 7492/7492 co-relation queries the response was YES. [2024-11-22 13:54:43,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 627 events. 336/627 cut-off events. For 7492/7492 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2942 event pairs, 27 based on Foata normal form. 11/632 useless extension candidates. Maximal degree in co-relation 3582. Up to 256 conditions per place. [2024-11-22 13:54:43,673 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 67 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2024-11-22 13:54:43,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 2027 flow [2024-11-22 13:54:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-11-22 13:54:43,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-22 13:54:43,674 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 1681 flow. Second operand 5 states and 68 transitions. [2024-11-22 13:54:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 2027 flow [2024-11-22 13:54:43,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 1960 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:43,697 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 1684 flow [2024-11-22 13:54:43,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1684, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-22 13:54:43,698 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-11-22 13:54:43,698 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 1684 flow [2024-11-22 13:54:43,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2024-11-22 13:54:43,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:43,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:43,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:54:43,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:43,899 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:43,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -68938309, now seen corresponding path program 2 times [2024-11-22 13:54:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875730171] [2024-11-22 13:54:43,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:43,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:43,909 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:43,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875730171] [2024-11-22 13:54:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875730171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281359884] [2024-11-22 13:54:43,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:43,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:43,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:43,939 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) [2024-11-22 13:54:43,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:54:43,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:43,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:43,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:54:43,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:43,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281359884] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:54:44,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-22 13:54:44,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852921735] [2024-11-22 13:54:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:44,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:44,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:44,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:44,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:54:44,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:44,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 1684 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) [2024-11-22 13:54:44,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:44,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:44,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:44,192 INFO L124 PetriNetUnfolderBase]: 418/819 cut-off events. [2024-11-22 13:54:44,193 INFO L125 PetriNetUnfolderBase]: For 9855/9858 co-relation queries the response was YES. [2024-11-22 13:54:44,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 819 events. 418/819 cut-off events. For 9855/9858 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4348 event pairs, 18 based on Foata normal form. 12/824 useless extension candidates. Maximal degree in co-relation 4629. Up to 371 conditions per place. [2024-11-22 13:54:44,201 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 74 selfloop transitions, 43 changer transitions 0/152 dead transitions. [2024-11-22 13:54:44,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 2296 flow [2024-11-22 13:54:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-22 13:54:44,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-22 13:54:44,202 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 1684 flow. Second operand 5 states and 71 transitions. [2024-11-22 13:54:44,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 2296 flow [2024-11-22 13:54:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 152 transitions, 2225 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-22 13:54:44,226 INFO L231 Difference]: Finished difference. Result has 114 places, 125 transitions, 1961 flow [2024-11-22 13:54:44,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1961, PETRI_PLACES=114, PETRI_TRANSITIONS=125} [2024-11-22 13:54:44,227 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2024-11-22 13:54:44,227 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 125 transitions, 1961 flow [2024-11-22 13:54:44,227 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) [2024-11-22 13:54:44,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:44,228 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:44,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:54:44,432 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,SelfDestructingSolverStorable20 [2024-11-22 13:54:44,433 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:44,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1299711871, now seen corresponding path program 3 times [2024-11-22 13:54:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323268333] [2024-11-22 13:54:44,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:44,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:54:44,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:44,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323268333] [2024-11-22 13:54:44,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323268333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:44,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:44,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:44,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902974671] [2024-11-22 13:54:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:44,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:44,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:44,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:44,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 1961 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) [2024-11-22 13:54:44,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:44,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:44,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:44,641 INFO L124 PetriNetUnfolderBase]: 382/747 cut-off events. [2024-11-22 13:54:44,641 INFO L125 PetriNetUnfolderBase]: For 10676/10681 co-relation queries the response was YES. [2024-11-22 13:54:44,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 747 events. 382/747 cut-off events. For 10676/10681 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3831 event pairs, 20 based on Foata normal form. 9/750 useless extension candidates. Maximal degree in co-relation 4626. Up to 262 conditions per place. [2024-11-22 13:54:44,648 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 80 selfloop transitions, 34 changer transitions 2/149 dead transitions. [2024-11-22 13:54:44,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 149 transitions, 2446 flow [2024-11-22 13:54:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:54:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:54:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-22 13:54:44,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-11-22 13:54:44,650 INFO L175 Difference]: Start difference. First operand has 114 places, 125 transitions, 1961 flow. Second operand 6 states and 74 transitions. [2024-11-22 13:54:44,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 149 transitions, 2446 flow [2024-11-22 13:54:44,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 149 transitions, 2398 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:44,673 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 1939 flow [2024-11-22 13:54:44,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1939, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2024-11-22 13:54:44,674 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 94 predicate places. [2024-11-22 13:54:44,674 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 1939 flow [2024-11-22 13:54:44,674 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) [2024-11-22 13:54:44,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:44,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:44,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 13:54:44,675 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:44,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1643023608, now seen corresponding path program 3 times [2024-11-22 13:54:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802763805] [2024-11-22 13:54:44,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:44,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:54:44,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802763805] [2024-11-22 13:54:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802763805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432103397] [2024-11-22 13:54:44,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:44,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:44,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:44,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 1939 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) [2024-11-22 13:54:44,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:44,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:44,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:44,901 INFO L124 PetriNetUnfolderBase]: 391/759 cut-off events. [2024-11-22 13:54:44,902 INFO L125 PetriNetUnfolderBase]: For 11044/11046 co-relation queries the response was YES. [2024-11-22 13:54:44,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4939 conditions, 759 events. 391/759 cut-off events. For 11044/11046 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3865 event pairs, 52 based on Foata normal form. 9/760 useless extension candidates. Maximal degree in co-relation 4745. Up to 192 conditions per place. [2024-11-22 13:54:44,909 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 82 selfloop transitions, 35 changer transitions 5/154 dead transitions. [2024-11-22 13:54:44,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 154 transitions, 2420 flow [2024-11-22 13:54:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:54:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:54:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-11-22 13:54:44,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-22 13:54:44,910 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 1939 flow. Second operand 8 states and 99 transitions. [2024-11-22 13:54:44,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 154 transitions, 2420 flow [2024-11-22 13:54:44,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 154 transitions, 2372 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:44,935 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 1943 flow [2024-11-22 13:54:44,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1943, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-11-22 13:54:44,936 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 97 predicate places. [2024-11-22 13:54:44,936 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 1943 flow [2024-11-22 13:54:44,936 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) [2024-11-22 13:54:44,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:44,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:44,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 13:54:44,937 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:44,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1718778154, now seen corresponding path program 4 times [2024-11-22 13:54:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797395810] [2024-11-22 13:54:44,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:44,943 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:44,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797395810] [2024-11-22 13:54:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797395810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:44,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:44,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106148166] [2024-11-22 13:54:44,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:44,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:44,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:44,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 1943 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) [2024-11-22 13:54:44,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:44,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:44,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:45,181 INFO L124 PetriNetUnfolderBase]: 447/884 cut-off events. [2024-11-22 13:54:45,181 INFO L125 PetriNetUnfolderBase]: For 13331/13335 co-relation queries the response was YES. [2024-11-22 13:54:45,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5654 conditions, 884 events. 447/884 cut-off events. For 13331/13335 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4749 event pairs, 129 based on Foata normal form. 10/879 useless extension candidates. Maximal degree in co-relation 5316. Up to 436 conditions per place. [2024-11-22 13:54:45,190 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 80 selfloop transitions, 38 changer transitions 2/152 dead transitions. [2024-11-22 13:54:45,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 152 transitions, 2550 flow [2024-11-22 13:54:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-11-22 13:54:45,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-22 13:54:45,191 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 1943 flow. Second operand 5 states and 70 transitions. [2024-11-22 13:54:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 152 transitions, 2550 flow [2024-11-22 13:54:45,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 152 transitions, 2440 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:45,219 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 2102 flow [2024-11-22 13:54:45,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2102, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-11-22 13:54:45,220 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2024-11-22 13:54:45,220 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 2102 flow [2024-11-22 13:54:45,220 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) [2024-11-22 13:54:45,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:45,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:45,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 13:54:45,221 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:45,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1578370555, now seen corresponding path program 4 times [2024-11-22 13:54:45,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:45,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389636655] [2024-11-22 13:54:45,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:45,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:45,227 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:45,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:45,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:45,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389636655] [2024-11-22 13:54:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389636655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:45,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:45,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126543473] [2024-11-22 13:54:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:45,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:45,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:45,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 2102 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) [2024-11-22 13:54:45,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:45,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:45,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:45,426 INFO L124 PetriNetUnfolderBase]: 417/826 cut-off events. [2024-11-22 13:54:45,426 INFO L125 PetriNetUnfolderBase]: For 12508/12512 co-relation queries the response was YES. [2024-11-22 13:54:45,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 826 events. 417/826 cut-off events. For 12508/12512 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4325 event pairs, 139 based on Foata normal form. 11/828 useless extension candidates. Maximal degree in co-relation 5187. Up to 510 conditions per place. [2024-11-22 13:54:45,434 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 76 selfloop transitions, 36 changer transitions 2/146 dead transitions. [2024-11-22 13:54:45,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 146 transitions, 2496 flow [2024-11-22 13:54:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-11-22 13:54:45,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-22 13:54:45,437 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 2102 flow. Second operand 5 states and 68 transitions. [2024-11-22 13:54:45,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 146 transitions, 2496 flow [2024-11-22 13:54:45,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 146 transitions, 2459 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-22 13:54:45,465 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 2168 flow [2024-11-22 13:54:45,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2168, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2024-11-22 13:54:45,466 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 102 predicate places. [2024-11-22 13:54:45,466 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 2168 flow [2024-11-22 13:54:45,466 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) [2024-11-22 13:54:45,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:45,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:45,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 13:54:45,467 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:45,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1479585689, now seen corresponding path program 5 times [2024-11-22 13:54:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997666059] [2024-11-22 13:54:45,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:45,483 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:45,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997666059] [2024-11-22 13:54:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997666059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:45,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693962758] [2024-11-22 13:54:45,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:45,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:45,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:45,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 2168 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) [2024-11-22 13:54:45,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:45,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:45,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:45,688 INFO L124 PetriNetUnfolderBase]: 410/820 cut-off events. [2024-11-22 13:54:45,688 INFO L125 PetriNetUnfolderBase]: For 12487/12491 co-relation queries the response was YES. [2024-11-22 13:54:45,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 820 events. 410/820 cut-off events. For 12487/12491 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4349 event pairs, 73 based on Foata normal form. 12/825 useless extension candidates. Maximal degree in co-relation 5013. Up to 360 conditions per place. [2024-11-22 13:54:45,697 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 68 selfloop transitions, 42 changer transitions 7/147 dead transitions. [2024-11-22 13:54:45,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 147 transitions, 2557 flow [2024-11-22 13:54:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:54:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:54:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-22 13:54:45,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-11-22 13:54:45,699 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 2168 flow. Second operand 7 states and 80 transitions. [2024-11-22 13:54:45,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 147 transitions, 2557 flow [2024-11-22 13:54:45,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 147 transitions, 2471 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:45,726 INFO L231 Difference]: Finished difference. Result has 129 places, 121 transitions, 2054 flow [2024-11-22 13:54:45,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2054, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2024-11-22 13:54:45,727 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2024-11-22 13:54:45,727 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 2054 flow [2024-11-22 13:54:45,727 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) [2024-11-22 13:54:45,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:45,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:45,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 13:54:45,727 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:45,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1781030780, now seen corresponding path program 5 times [2024-11-22 13:54:45,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:45,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248039571] [2024-11-22 13:54:45,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:45,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:45,735 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:45,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248039571] [2024-11-22 13:54:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248039571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122889631] [2024-11-22 13:54:45,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:45,762 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) [2024-11-22 13:54:45,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:54:45,802 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:45,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:45,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:54:45,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:45,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122889631] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:54:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2024-11-22 13:54:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165022218] [2024-11-22 13:54:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:45,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:54:45,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:45,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 2054 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) [2024-11-22 13:54:45,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:45,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:45,978 INFO L124 PetriNetUnfolderBase]: 323/633 cut-off events. [2024-11-22 13:54:45,979 INFO L125 PetriNetUnfolderBase]: For 10259/10262 co-relation queries the response was YES. [2024-11-22 13:54:45,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 633 events. 323/633 cut-off events. For 10259/10262 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3053 event pairs, 37 based on Foata normal form. 15/641 useless extension candidates. Maximal degree in co-relation 4106. Up to 319 conditions per place. [2024-11-22 13:54:45,985 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 62 selfloop transitions, 37 changer transitions 1/125 dead transitions. [2024-11-22 13:54:45,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 2167 flow [2024-11-22 13:54:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-22 13:54:45,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-22 13:54:45,986 INFO L175 Difference]: Start difference. First operand has 129 places, 121 transitions, 2054 flow. Second operand 5 states and 64 transitions. [2024-11-22 13:54:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 2167 flow [2024-11-22 13:54:46,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 2072 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-22 13:54:46,010 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 1805 flow [2024-11-22 13:54:46,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1805, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-11-22 13:54:46,011 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 101 predicate places. [2024-11-22 13:54:46,011 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 1805 flow [2024-11-22 13:54:46,012 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) [2024-11-22 13:54:46,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:46,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:46,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:54:46,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:46,217 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:46,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -841264478, now seen corresponding path program 6 times [2024-11-22 13:54:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738884750] [2024-11-22 13:54:46,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:46,227 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:54:46,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738884750] [2024-11-22 13:54:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738884750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:46,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:46,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717050255] [2024-11-22 13:54:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:46,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:46,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:46,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 1805 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) [2024-11-22 13:54:46,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:46,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:46,407 INFO L124 PetriNetUnfolderBase]: 279/545 cut-off events. [2024-11-22 13:54:46,408 INFO L125 PetriNetUnfolderBase]: For 8673/8673 co-relation queries the response was YES. [2024-11-22 13:54:46,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 545 events. 279/545 cut-off events. For 8673/8673 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2474 event pairs, 22 based on Foata normal form. 7/550 useless extension candidates. Maximal degree in co-relation 3364. Up to 172 conditions per place. [2024-11-22 13:54:46,412 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 74 selfloop transitions, 24 changer transitions 2/120 dead transitions. [2024-11-22 13:54:46,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 120 transitions, 2060 flow [2024-11-22 13:54:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:54:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:54:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-11-22 13:54:46,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-22 13:54:46,414 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 1805 flow. Second operand 6 states and 72 transitions. [2024-11-22 13:54:46,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 120 transitions, 2060 flow [2024-11-22 13:54:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 120 transitions, 1964 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-22 13:54:46,433 INFO L231 Difference]: Finished difference. Result has 124 places, 98 transitions, 1604 flow [2024-11-22 13:54:46,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1604, PETRI_PLACES=124, PETRI_TRANSITIONS=98} [2024-11-22 13:54:46,436 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2024-11-22 13:54:46,436 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 98 transitions, 1604 flow [2024-11-22 13:54:46,437 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) [2024-11-22 13:54:46,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:46,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:46,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 13:54:46,437 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:46,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash -812716759, now seen corresponding path program 6 times [2024-11-22 13:54:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:46,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899945696] [2024-11-22 13:54:46,438 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:46,443 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:54:46,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899945696] [2024-11-22 13:54:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899945696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:54:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584805759] [2024-11-22 13:54:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:46,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:46,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:54:46,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 98 transitions, 1604 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) [2024-11-22 13:54:46,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:46,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:54:46,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:46,626 INFO L124 PetriNetUnfolderBase]: 247/474 cut-off events. [2024-11-22 13:54:46,626 INFO L125 PetriNetUnfolderBase]: For 7354/7354 co-relation queries the response was YES. [2024-11-22 13:54:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3262 conditions, 474 events. 247/474 cut-off events. For 7354/7354 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2050 event pairs, 38 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 3179. Up to 152 conditions per place. [2024-11-22 13:54:46,630 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 32 changer transitions 3/114 dead transitions. [2024-11-22 13:54:46,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 114 transitions, 1849 flow [2024-11-22 13:54:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:54:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:54:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-11-22 13:54:46,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-11-22 13:54:46,631 INFO L175 Difference]: Start difference. First operand has 124 places, 98 transitions, 1604 flow. Second operand 8 states and 91 transitions. [2024-11-22 13:54:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 114 transitions, 1849 flow [2024-11-22 13:54:46,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 1753 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-22 13:54:46,645 INFO L231 Difference]: Finished difference. Result has 119 places, 88 transitions, 1429 flow [2024-11-22 13:54:46,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1429, PETRI_PLACES=119, PETRI_TRANSITIONS=88} [2024-11-22 13:54:46,647 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2024-11-22 13:54:46,648 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 88 transitions, 1429 flow [2024-11-22 13:54:46,648 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) [2024-11-22 13:54:46,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:46,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:46,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 13:54:46,648 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:46,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash 408941021, now seen corresponding path program 1 times [2024-11-22 13:54:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:46,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977373664] [2024-11-22 13:54:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977373664] [2024-11-22 13:54:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977373664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231470810] [2024-11-22 13:54:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:46,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:46,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:46,773 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) [2024-11-22 13:54:46,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:54:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:46,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:46,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:46,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231470810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:47,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:54:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145623889] [2024-11-22 13:54:47,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:47,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:54:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:54:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:54:47,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 88 transitions, 1429 flow. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 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) [2024-11-22 13:54:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:48,869 INFO L124 PetriNetUnfolderBase]: 686/1284 cut-off events. [2024-11-22 13:54:48,870 INFO L125 PetriNetUnfolderBase]: For 14021/14021 co-relation queries the response was YES. [2024-11-22 13:54:48,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1284 events. 686/1284 cut-off events. For 14021/14021 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6843 event pairs, 33 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 7163. Up to 238 conditions per place. [2024-11-22 13:54:48,881 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 127 selfloop transitions, 87 changer transitions 68/283 dead transitions. [2024-11-22 13:54:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 283 transitions, 3929 flow [2024-11-22 13:54:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 13:54:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-22 13:54:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2024-11-22 13:54:48,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-11-22 13:54:48,883 INFO L175 Difference]: Start difference. First operand has 119 places, 88 transitions, 1429 flow. Second operand 36 states and 310 transitions. [2024-11-22 13:54:48,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 283 transitions, 3929 flow [2024-11-22 13:54:48,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 283 transitions, 3607 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-11-22 13:54:48,906 INFO L231 Difference]: Finished difference. Result has 157 places, 127 transitions, 2200 flow [2024-11-22 13:54:48,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2200, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2024-11-22 13:54:48,907 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2024-11-22 13:54:48,907 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 2200 flow [2024-11-22 13:54:48,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 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) [2024-11-22 13:54:48,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:48,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:48,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:54:49,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:49,112 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:49,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -947737611, now seen corresponding path program 2 times [2024-11-22 13:54:49,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:49,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608412423] [2024-11-22 13:54:49,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:49,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:49,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:49,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:49,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608412423] [2024-11-22 13:54:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608412423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326207921] [2024-11-22 13:54:49,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:49,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:49,260 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) [2024-11-22 13:54:49,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:54:49,301 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:49,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:49,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:49,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:49,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326207921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:49,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2024-11-22 13:54:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173941058] [2024-11-22 13:54:49,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:49,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:54:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:54:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:54:49,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:49,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 2200 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2024-11-22 13:54:49,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:49,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:49,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:50,882 INFO L124 PetriNetUnfolderBase]: 807/1574 cut-off events. [2024-11-22 13:54:50,883 INFO L125 PetriNetUnfolderBase]: For 17215/17215 co-relation queries the response was YES. [2024-11-22 13:54:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 1574 events. 807/1574 cut-off events. For 17215/17215 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9201 event pairs, 94 based on Foata normal form. 13/1587 useless extension candidates. Maximal degree in co-relation 8766. Up to 580 conditions per place. [2024-11-22 13:54:50,896 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 126 selfloop transitions, 126 changer transitions 14/267 dead transitions. [2024-11-22 13:54:50,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 267 transitions, 4388 flow [2024-11-22 13:54:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:54:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:54:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 221 transitions. [2024-11-22 13:54:50,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4185606060606061 [2024-11-22 13:54:50,897 INFO L175 Difference]: Start difference. First operand has 157 places, 127 transitions, 2200 flow. Second operand 24 states and 221 transitions. [2024-11-22 13:54:50,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 267 transitions, 4388 flow [2024-11-22 13:54:50,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 267 transitions, 3456 flow, removed 262 selfloop flow, removed 21 redundant places. [2024-11-22 13:54:50,944 INFO L231 Difference]: Finished difference. Result has 163 places, 183 transitions, 2747 flow [2024-11-22 13:54:50,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2747, PETRI_PLACES=163, PETRI_TRANSITIONS=183} [2024-11-22 13:54:50,945 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 139 predicate places. [2024-11-22 13:54:50,945 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 183 transitions, 2747 flow [2024-11-22 13:54:50,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2024-11-22 13:54:50,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:50,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:50,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:54:51,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:51,147 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:51,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -698936109, now seen corresponding path program 3 times [2024-11-22 13:54:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:51,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148761156] [2024-11-22 13:54:51,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:51,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:51,154 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:54:51,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148761156] [2024-11-22 13:54:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148761156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760785071] [2024-11-22 13:54:51,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:51,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:51,277 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) [2024-11-22 13:54:51,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:54:51,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:54:51,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:51,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:51,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:51,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760785071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:51,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:54:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489420960] [2024-11-22 13:54:51,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:51,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:54:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:54:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:54:51,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:51,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 183 transitions, 2747 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:51,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:51,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:51,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:52,284 INFO L124 PetriNetUnfolderBase]: 922/1790 cut-off events. [2024-11-22 13:54:52,284 INFO L125 PetriNetUnfolderBase]: For 15254/15254 co-relation queries the response was YES. [2024-11-22 13:54:52,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9330 conditions, 1790 events. 922/1790 cut-off events. For 15254/15254 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10724 event pairs, 82 based on Foata normal form. 6/1796 useless extension candidates. Maximal degree in co-relation 9274. Up to 466 conditions per place. [2024-11-22 13:54:52,293 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 98 selfloop transitions, 157 changer transitions 31/287 dead transitions. [2024-11-22 13:54:52,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 287 transitions, 4590 flow [2024-11-22 13:54:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:54:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 13:54:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-11-22 13:54:52,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-22 13:54:52,295 INFO L175 Difference]: Start difference. First operand has 163 places, 183 transitions, 2747 flow. Second operand 18 states and 154 transitions. [2024-11-22 13:54:52,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 287 transitions, 4590 flow [2024-11-22 13:54:52,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 287 transitions, 4304 flow, removed 103 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:52,344 INFO L231 Difference]: Finished difference. Result has 180 places, 217 transitions, 3611 flow [2024-11-22 13:54:52,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3611, PETRI_PLACES=180, PETRI_TRANSITIONS=217} [2024-11-22 13:54:52,345 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 156 predicate places. [2024-11-22 13:54:52,345 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 217 transitions, 3611 flow [2024-11-22 13:54:52,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:52,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:52,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:52,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:54:52,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:52,550 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:52,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash 211141373, now seen corresponding path program 4 times [2024-11-22 13:54:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704430133] [2024-11-22 13:54:52,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:52,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:52,555 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:52,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704430133] [2024-11-22 13:54:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704430133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171378538] [2024-11-22 13:54:52,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:54:52,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:52,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:52,679 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) [2024-11-22 13:54:52,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:54:52,718 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:54:52,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:52,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:52,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:52,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171378538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:53,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:54:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956097878] [2024-11-22 13:54:53,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:53,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:54:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:54:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:54:53,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:53,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 217 transitions, 3611 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:54:53,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:53,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:53,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:53,575 INFO L124 PetriNetUnfolderBase]: 856/1674 cut-off events. [2024-11-22 13:54:53,576 INFO L125 PetriNetUnfolderBase]: For 18070/18070 co-relation queries the response was YES. [2024-11-22 13:54:53,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9566 conditions, 1674 events. 856/1674 cut-off events. For 18070/18070 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9977 event pairs, 91 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 9504. Up to 529 conditions per place. [2024-11-22 13:54:53,587 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 148 changer transitions 21/262 dead transitions. [2024-11-22 13:54:53,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 262 transitions, 4517 flow [2024-11-22 13:54:53,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:54:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 13:54:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-22 13:54:53,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-11-22 13:54:53,588 INFO L175 Difference]: Start difference. First operand has 180 places, 217 transitions, 3611 flow. Second operand 17 states and 143 transitions. [2024-11-22 13:54:53,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 262 transitions, 4517 flow [2024-11-22 13:54:53,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 4297 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-11-22 13:54:53,665 INFO L231 Difference]: Finished difference. Result has 191 places, 208 transitions, 3525 flow [2024-11-22 13:54:53,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3525, PETRI_PLACES=191, PETRI_TRANSITIONS=208} [2024-11-22 13:54:53,665 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 167 predicate places. [2024-11-22 13:54:53,666 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 208 transitions, 3525 flow [2024-11-22 13:54:53,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:54:53,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:53,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:53,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 13:54:53,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:53,867 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:53,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1038621285, now seen corresponding path program 5 times [2024-11-22 13:54:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:53,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319226950] [2024-11-22 13:54:53,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:53,873 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:53,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:53,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319226950] [2024-11-22 13:54:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319226950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:53,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415377664] [2024-11-22 13:54:53,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:54:53,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:53,952 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) [2024-11-22 13:54:53,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:54:53,997 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:53,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:53,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:54:53,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:54,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415377664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:54,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-22 13:54:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316931642] [2024-11-22 13:54:54,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:54,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:54:54,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:54:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:54:54,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 208 transitions, 3525 flow. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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) [2024-11-22 13:54:54,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:54,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:54,442 INFO L124 PetriNetUnfolderBase]: 796/1532 cut-off events. [2024-11-22 13:54:54,442 INFO L125 PetriNetUnfolderBase]: For 17091/17091 co-relation queries the response was YES. [2024-11-22 13:54:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9180 conditions, 1532 events. 796/1532 cut-off events. For 17091/17091 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8663 event pairs, 175 based on Foata normal form. 3/1535 useless extension candidates. Maximal degree in co-relation 9118. Up to 989 conditions per place. [2024-11-22 13:54:54,454 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 129 selfloop transitions, 54 changer transitions 54/238 dead transitions. [2024-11-22 13:54:54,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 238 transitions, 4319 flow [2024-11-22 13:54:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:54:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:54:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-22 13:54:54,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-22 13:54:54,455 INFO L175 Difference]: Start difference. First operand has 191 places, 208 transitions, 3525 flow. Second operand 9 states and 84 transitions. [2024-11-22 13:54:54,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 238 transitions, 4319 flow [2024-11-22 13:54:54,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 238 transitions, 4078 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-11-22 13:54:54,520 INFO L231 Difference]: Finished difference. Result has 185 places, 173 transitions, 2733 flow [2024-11-22 13:54:54,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2733, PETRI_PLACES=185, PETRI_TRANSITIONS=173} [2024-11-22 13:54:54,521 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 161 predicate places. [2024-11-22 13:54:54,521 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 173 transitions, 2733 flow [2024-11-22 13:54:54,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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) [2024-11-22 13:54:54,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:54,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:54,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:54:54,722 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,SelfDestructingSolverStorable33 [2024-11-22 13:54:54,722 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:54,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1327831309, now seen corresponding path program 6 times [2024-11-22 13:54:54,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:54,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047835594] [2024-11-22 13:54:54,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:54,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:54,729 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:54:54,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047835594] [2024-11-22 13:54:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047835594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091632835] [2024-11-22 13:54:54,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:54:54,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:54,846 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) [2024-11-22 13:54:54,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:54:54,885 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:54:54,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:54,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:54,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:54,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091632835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:55,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:55,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-22 13:54:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994027298] [2024-11-22 13:54:55,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:55,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:54:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:54:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:54:55,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:55,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 173 transitions, 2733 flow. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 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) [2024-11-22 13:54:55,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:55,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:55,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:55,715 INFO L124 PetriNetUnfolderBase]: 990/1875 cut-off events. [2024-11-22 13:54:55,715 INFO L125 PetriNetUnfolderBase]: For 19790/19790 co-relation queries the response was YES. [2024-11-22 13:54:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10727 conditions, 1875 events. 990/1875 cut-off events. For 19790/19790 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11182 event pairs, 136 based on Foata normal form. 2/1877 useless extension candidates. Maximal degree in co-relation 10663. Up to 901 conditions per place. [2024-11-22 13:54:55,725 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 144 selfloop transitions, 127 changer transitions 19/291 dead transitions. [2024-11-22 13:54:55,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 291 transitions, 4879 flow [2024-11-22 13:54:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:54:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:54:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 126 transitions. [2024-11-22 13:54:55,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-22 13:54:55,726 INFO L175 Difference]: Start difference. First operand has 185 places, 173 transitions, 2733 flow. Second operand 15 states and 126 transitions. [2024-11-22 13:54:55,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 291 transitions, 4879 flow [2024-11-22 13:54:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 291 transitions, 4365 flow, removed 44 selfloop flow, removed 19 redundant places. [2024-11-22 13:54:55,789 INFO L231 Difference]: Finished difference. Result has 169 places, 215 transitions, 3280 flow [2024-11-22 13:54:55,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3280, PETRI_PLACES=169, PETRI_TRANSITIONS=215} [2024-11-22 13:54:55,790 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 145 predicate places. [2024-11-22 13:54:55,790 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 215 transitions, 3280 flow [2024-11-22 13:54:55,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 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) [2024-11-22 13:54:55,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:55,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:55,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 13:54:55,990 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,SelfDestructingSolverStorable34 [2024-11-22 13:54:55,990 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:55,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1514127617, now seen corresponding path program 7 times [2024-11-22 13:54:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036835298] [2024-11-22 13:54:55,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:54:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:56,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:56,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036835298] [2024-11-22 13:54:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036835298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869511115] [2024-11-22 13:54:56,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:54:56,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:56,104 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) [2024-11-22 13:54:56,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:54:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:56,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:56,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:56,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869511115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:56,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-22 13:54:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430943828] [2024-11-22 13:54:56,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:56,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 13:54:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:56,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 13:54:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-22 13:54:56,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:56,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 215 transitions, 3280 flow. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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) [2024-11-22 13:54:56,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:56,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:56,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:57,238 INFO L124 PetriNetUnfolderBase]: 1427/2637 cut-off events. [2024-11-22 13:54:57,238 INFO L125 PetriNetUnfolderBase]: For 30840/30840 co-relation queries the response was YES. [2024-11-22 13:54:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 2637 events. 1427/2637 cut-off events. For 30840/30840 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16438 event pairs, 56 based on Foata normal form. 43/2680 useless extension candidates. Maximal degree in co-relation 15264. Up to 625 conditions per place. [2024-11-22 13:54:57,257 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 118 selfloop transitions, 304 changer transitions 12/435 dead transitions. [2024-11-22 13:54:57,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 435 transitions, 7270 flow [2024-11-22 13:54:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 13:54:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 13:54:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 220 transitions. [2024-11-22 13:54:57,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-22 13:54:57,259 INFO L175 Difference]: Start difference. First operand has 169 places, 215 transitions, 3280 flow. Second operand 28 states and 220 transitions. [2024-11-22 13:54:57,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 435 transitions, 7270 flow [2024-11-22 13:54:57,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 435 transitions, 7079 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:57,345 INFO L231 Difference]: Finished difference. Result has 197 places, 368 transitions, 6869 flow [2024-11-22 13:54:57,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6869, PETRI_PLACES=197, PETRI_TRANSITIONS=368} [2024-11-22 13:54:57,345 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 173 predicate places. [2024-11-22 13:54:57,346 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 368 transitions, 6869 flow [2024-11-22 13:54:57,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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) [2024-11-22 13:54:57,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:57,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:57,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 13:54:57,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-22 13:54:57,547 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:57,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash -742170367, now seen corresponding path program 8 times [2024-11-22 13:54:57,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:57,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252886081] [2024-11-22 13:54:57,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:57,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:57,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252886081] [2024-11-22 13:54:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252886081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280419365] [2024-11-22 13:54:57,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:57,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:57,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:57,653 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) [2024-11-22 13:54:57,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:54:57,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:57,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:57,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:57,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:57,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280419365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:57,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-22 13:54:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308462367] [2024-11-22 13:54:57,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:57,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 13:54:57,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 13:54:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-22 13:54:58,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:58,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 368 transitions, 6869 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 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) [2024-11-22 13:54:58,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:58,988 INFO L124 PetriNetUnfolderBase]: 1481/2791 cut-off events. [2024-11-22 13:54:58,988 INFO L125 PetriNetUnfolderBase]: For 33607/33607 co-relation queries the response was YES. [2024-11-22 13:54:58,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18060 conditions, 2791 events. 1481/2791 cut-off events. For 33607/33607 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 18244 event pairs, 67 based on Foata normal form. 78/2869 useless extension candidates. Maximal degree in co-relation 17995. Up to 581 conditions per place. [2024-11-22 13:54:59,003 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 98 selfloop transitions, 284 changer transitions 63/446 dead transitions. [2024-11-22 13:54:59,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 446 transitions, 8453 flow [2024-11-22 13:54:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:54:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 13:54:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 194 transitions. [2024-11-22 13:54:59,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3527272727272727 [2024-11-22 13:54:59,005 INFO L175 Difference]: Start difference. First operand has 197 places, 368 transitions, 6869 flow. Second operand 25 states and 194 transitions. [2024-11-22 13:54:59,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 446 transitions, 8453 flow [2024-11-22 13:54:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 446 transitions, 7632 flow, removed 282 selfloop flow, removed 13 redundant places. [2024-11-22 13:54:59,145 INFO L231 Difference]: Finished difference. Result has 212 places, 346 transitions, 6379 flow [2024-11-22 13:54:59,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6379, PETRI_PLACES=212, PETRI_TRANSITIONS=346} [2024-11-22 13:54:59,145 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2024-11-22 13:54:59,145 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 346 transitions, 6379 flow [2024-11-22 13:54:59,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 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) [2024-11-22 13:54:59,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:59,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:59,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 13:54:59,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-22 13:54:59,346 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:54:59,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -824051139, now seen corresponding path program 9 times [2024-11-22 13:54:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942190715] [2024-11-22 13:54:59,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:59,352 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:54:59,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:59,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942190715] [2024-11-22 13:54:59,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942190715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474671427] [2024-11-22 13:54:59,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:54:59,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:59,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:59,463 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) [2024-11-22 13:54:59,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:54:59,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:54:59,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:59,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:54:59,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:59,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474671427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:59,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-22 13:54:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520797119] [2024-11-22 13:54:59,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:59,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:54:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:54:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:54:59,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:54:59,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 346 transitions, 6379 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:59,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:59,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:54:59,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:00,583 INFO L124 PetriNetUnfolderBase]: 1254/2425 cut-off events. [2024-11-22 13:55:00,584 INFO L125 PetriNetUnfolderBase]: For 28839/28839 co-relation queries the response was YES. [2024-11-22 13:55:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15279 conditions, 2425 events. 1254/2425 cut-off events. For 28839/28839 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15600 event pairs, 146 based on Foata normal form. 9/2434 useless extension candidates. Maximal degree in co-relation 15216. Up to 1046 conditions per place. [2024-11-22 13:55:00,596 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 161 selfloop transitions, 164 changer transitions 95/421 dead transitions. [2024-11-22 13:55:00,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 421 transitions, 8142 flow [2024-11-22 13:55:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:55:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:55:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2024-11-22 13:55:00,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-11-22 13:55:00,597 INFO L175 Difference]: Start difference. First operand has 212 places, 346 transitions, 6379 flow. Second operand 15 states and 124 transitions. [2024-11-22 13:55:00,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 421 transitions, 8142 flow [2024-11-22 13:55:00,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 421 transitions, 7662 flow, removed 48 selfloop flow, removed 18 redundant places. [2024-11-22 13:55:00,726 INFO L231 Difference]: Finished difference. Result has 203 places, 292 transitions, 5246 flow [2024-11-22 13:55:00,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5246, PETRI_PLACES=203, PETRI_TRANSITIONS=292} [2024-11-22 13:55:00,727 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2024-11-22 13:55:00,727 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 292 transitions, 5246 flow [2024-11-22 13:55:00,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:00,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:00,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:00,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 13:55:00,928 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,SelfDestructingSolverStorable37 [2024-11-22 13:55:00,928 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:00,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 216184659, now seen corresponding path program 10 times [2024-11-22 13:55:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382611232] [2024-11-22 13:55:00,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:00,933 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:00,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382611232] [2024-11-22 13:55:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382611232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340504439] [2024-11-22 13:55:01,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:01,046 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) [2024-11-22 13:55:01,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:55:01,086 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:01,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:01,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:01,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:01,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340504439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:01,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-22 13:55:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467649050] [2024-11-22 13:55:01,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:01,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:55:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:55:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:55:01,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:01,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 292 transitions, 5246 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:01,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:01,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:02,479 INFO L124 PetriNetUnfolderBase]: 1551/3070 cut-off events. [2024-11-22 13:55:02,479 INFO L125 PetriNetUnfolderBase]: For 36274/36274 co-relation queries the response was YES. [2024-11-22 13:55:02,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18419 conditions, 3070 events. 1551/3070 cut-off events. For 36274/36274 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 21343 event pairs, 91 based on Foata normal form. 31/3101 useless extension candidates. Maximal degree in co-relation 18356. Up to 640 conditions per place. [2024-11-22 13:55:02,496 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 135 selfloop transitions, 235 changer transitions 144/515 dead transitions. [2024-11-22 13:55:02,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 515 transitions, 9241 flow [2024-11-22 13:55:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-22 13:55:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-22 13:55:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 310 transitions. [2024-11-22 13:55:02,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3613053613053613 [2024-11-22 13:55:02,497 INFO L175 Difference]: Start difference. First operand has 203 places, 292 transitions, 5246 flow. Second operand 39 states and 310 transitions. [2024-11-22 13:55:02,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 515 transitions, 9241 flow [2024-11-22 13:55:02,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 515 transitions, 8686 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-11-22 13:55:02,619 INFO L231 Difference]: Finished difference. Result has 232 places, 298 transitions, 5556 flow [2024-11-22 13:55:02,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4753, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=5556, PETRI_PLACES=232, PETRI_TRANSITIONS=298} [2024-11-22 13:55:02,619 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2024-11-22 13:55:02,619 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 298 transitions, 5556 flow [2024-11-22 13:55:02,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:02,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:02,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:02,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:02,821 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,SelfDestructingSolverStorable38 [2024-11-22 13:55:02,821 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:02,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1982989723, now seen corresponding path program 11 times [2024-11-22 13:55:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:02,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142493069] [2024-11-22 13:55:02,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:02,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:02,826 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:02,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142493069] [2024-11-22 13:55:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142493069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624476737] [2024-11-22 13:55:02,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:02,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:02,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:02,915 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) [2024-11-22 13:55:02,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:55:02,951 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:02,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:02,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:55:02,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:03,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624476737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:03,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:03,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-22 13:55:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915497328] [2024-11-22 13:55:03,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:03,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:55:03,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:55:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:55:03,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:03,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 298 transitions, 5556 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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) [2024-11-22 13:55:03,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:03,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:03,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:03,596 INFO L124 PetriNetUnfolderBase]: 1123/2255 cut-off events. [2024-11-22 13:55:03,596 INFO L125 PetriNetUnfolderBase]: For 26564/26564 co-relation queries the response was YES. [2024-11-22 13:55:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14162 conditions, 2255 events. 1123/2255 cut-off events. For 26564/26564 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14753 event pairs, 108 based on Foata normal form. 3/2258 useless extension candidates. Maximal degree in co-relation 14093. Up to 785 conditions per place. [2024-11-22 13:55:03,610 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 172 selfloop transitions, 153 changer transitions 35/361 dead transitions. [2024-11-22 13:55:03,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 361 transitions, 7193 flow [2024-11-22 13:55:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:55:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:55:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-11-22 13:55:03,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-11-22 13:55:03,611 INFO L175 Difference]: Start difference. First operand has 232 places, 298 transitions, 5556 flow. Second operand 10 states and 87 transitions. [2024-11-22 13:55:03,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 361 transitions, 7193 flow [2024-11-22 13:55:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 361 transitions, 6534 flow, removed 137 selfloop flow, removed 22 redundant places. [2024-11-22 13:55:03,715 INFO L231 Difference]: Finished difference. Result has 217 places, 306 transitions, 5558 flow [2024-11-22 13:55:03,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5558, PETRI_PLACES=217, PETRI_TRANSITIONS=306} [2024-11-22 13:55:03,716 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2024-11-22 13:55:03,716 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 306 transitions, 5558 flow [2024-11-22 13:55:03,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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) [2024-11-22 13:55:03,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:03,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:03,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:03,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:03,917 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:03,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash 327205667, now seen corresponding path program 12 times [2024-11-22 13:55:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923774084] [2024-11-22 13:55:03,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:03,921 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:55:03,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:04,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923774084] [2024-11-22 13:55:04,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923774084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139922305] [2024-11-22 13:55:04,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:04,041 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) [2024-11-22 13:55:04,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:55:04,078 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:55:04,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:04,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:04,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:04,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:04,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139922305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:04,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:04,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-22 13:55:04,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532949965] [2024-11-22 13:55:04,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:04,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:55:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:55:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:55:04,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:04,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 306 transitions, 5558 flow. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 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) [2024-11-22 13:55:04,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:04,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:04,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:04,835 INFO L124 PetriNetUnfolderBase]: 1018/2055 cut-off events. [2024-11-22 13:55:04,836 INFO L125 PetriNetUnfolderBase]: For 24348/24348 co-relation queries the response was YES. [2024-11-22 13:55:04,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12730 conditions, 2055 events. 1018/2055 cut-off events. For 24348/24348 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13231 event pairs, 182 based on Foata normal form. 2/2057 useless extension candidates. Maximal degree in co-relation 12663. Up to 1124 conditions per place. [2024-11-22 13:55:04,849 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 152 selfloop transitions, 119 changer transitions 68/340 dead transitions. [2024-11-22 13:55:04,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 340 transitions, 6545 flow [2024-11-22 13:55:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:55:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:55:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 101 transitions. [2024-11-22 13:55:04,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3531468531468531 [2024-11-22 13:55:04,850 INFO L175 Difference]: Start difference. First operand has 217 places, 306 transitions, 5558 flow. Second operand 13 states and 101 transitions. [2024-11-22 13:55:04,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 340 transitions, 6545 flow [2024-11-22 13:55:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 340 transitions, 6403 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-22 13:55:04,972 INFO L231 Difference]: Finished difference. Result has 218 places, 263 transitions, 4832 flow [2024-11-22 13:55:04,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4832, PETRI_PLACES=218, PETRI_TRANSITIONS=263} [2024-11-22 13:55:04,973 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2024-11-22 13:55:04,973 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 263 transitions, 4832 flow [2024-11-22 13:55:04,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 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) [2024-11-22 13:55:04,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:04,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:04,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:05,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:05,174 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:05,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:05,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1768147147, now seen corresponding path program 13 times [2024-11-22 13:55:05,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:05,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423360571] [2024-11-22 13:55:05,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:05,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:05,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423360571] [2024-11-22 13:55:05,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423360571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:05,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721749021] [2024-11-22 13:55:05,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:05,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:05,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:05,260 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) [2024-11-22 13:55:05,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 13:55:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:05,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:05,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:05,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721749021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:05,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-22 13:55:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438866599] [2024-11-22 13:55:05,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:05,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 13:55:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 13:55:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:55:05,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:05,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 263 transitions, 4832 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 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) [2024-11-22 13:55:05,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:05,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:05,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:06,147 INFO L124 PetriNetUnfolderBase]: 936/1908 cut-off events. [2024-11-22 13:55:06,147 INFO L125 PetriNetUnfolderBase]: For 21671/21671 co-relation queries the response was YES. [2024-11-22 13:55:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11586 conditions, 1908 events. 936/1908 cut-off events. For 21671/21671 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12239 event pairs, 60 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 11521. Up to 609 conditions per place. [2024-11-22 13:55:06,161 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 85 selfloop transitions, 164 changer transitions 76/326 dead transitions. [2024-11-22 13:55:06,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 326 transitions, 6140 flow [2024-11-22 13:55:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 13:55:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 13:55:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 178 transitions. [2024-11-22 13:55:06,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35177865612648224 [2024-11-22 13:55:06,162 INFO L175 Difference]: Start difference. First operand has 218 places, 263 transitions, 4832 flow. Second operand 23 states and 178 transitions. [2024-11-22 13:55:06,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 326 transitions, 6140 flow [2024-11-22 13:55:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 326 transitions, 5655 flow, removed 42 selfloop flow, removed 16 redundant places. [2024-11-22 13:55:06,230 INFO L231 Difference]: Finished difference. Result has 218 places, 227 transitions, 4222 flow [2024-11-22 13:55:06,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4222, PETRI_PLACES=218, PETRI_TRANSITIONS=227} [2024-11-22 13:55:06,231 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2024-11-22 13:55:06,231 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 227 transitions, 4222 flow [2024-11-22 13:55:06,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 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) [2024-11-22 13:55:06,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:06,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:06,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:06,432 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:06,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -42895517, now seen corresponding path program 14 times [2024-11-22 13:55:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319155557] [2024-11-22 13:55:06,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:06,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:06,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:06,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319155557] [2024-11-22 13:55:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319155557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:06,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177868043] [2024-11-22 13:55:06,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:06,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:06,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:06,520 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) [2024-11-22 13:55:06,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 13:55:06,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:06,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:06,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:06,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:06,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:06,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177868043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:06,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:06,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:06,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013995465] [2024-11-22 13:55:06,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:06,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:06,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:06,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:06,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:06,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:06,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 227 transitions, 4222 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:06,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:06,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:07,188 INFO L124 PetriNetUnfolderBase]: 843/1735 cut-off events. [2024-11-22 13:55:07,189 INFO L125 PetriNetUnfolderBase]: For 18974/18974 co-relation queries the response was YES. [2024-11-22 13:55:07,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10346 conditions, 1735 events. 843/1735 cut-off events. For 18974/18974 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10936 event pairs, 215 based on Foata normal form. 1/1736 useless extension candidates. Maximal degree in co-relation 10281. Up to 1210 conditions per place. [2024-11-22 13:55:07,203 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 175 selfloop transitions, 68 changer transitions 19/263 dead transitions. [2024-11-22 13:55:07,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 263 transitions, 5119 flow [2024-11-22 13:55:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:55:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:55:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 102 transitions. [2024-11-22 13:55:07,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35664335664335667 [2024-11-22 13:55:07,204 INFO L175 Difference]: Start difference. First operand has 218 places, 227 transitions, 4222 flow. Second operand 13 states and 102 transitions. [2024-11-22 13:55:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 263 transitions, 5119 flow [2024-11-22 13:55:07,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 263 transitions, 4643 flow, removed 58 selfloop flow, removed 27 redundant places. [2024-11-22 13:55:07,262 INFO L231 Difference]: Finished difference. Result has 197 places, 228 transitions, 3953 flow [2024-11-22 13:55:07,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3953, PETRI_PLACES=197, PETRI_TRANSITIONS=228} [2024-11-22 13:55:07,262 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 173 predicate places. [2024-11-22 13:55:07,263 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 228 transitions, 3953 flow [2024-11-22 13:55:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:07,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:07,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:07,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 13:55:07,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:07,464 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash 572254359, now seen corresponding path program 15 times [2024-11-22 13:55:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892562904] [2024-11-22 13:55:07,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:07,469 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:07,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892562904] [2024-11-22 13:55:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892562904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593755031] [2024-11-22 13:55:07,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:07,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:07,573 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) [2024-11-22 13:55:07,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 13:55:07,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:07,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:07,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:07,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:07,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593755031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:07,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-22 13:55:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573323078] [2024-11-22 13:55:07,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:07,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:55:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:55:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:55:07,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:07,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 228 transitions, 3953 flow. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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) [2024-11-22 13:55:07,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:07,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:07,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:08,524 INFO L124 PetriNetUnfolderBase]: 985/2011 cut-off events. [2024-11-22 13:55:08,524 INFO L125 PetriNetUnfolderBase]: For 19014/19014 co-relation queries the response was YES. [2024-11-22 13:55:08,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11407 conditions, 2011 events. 985/2011 cut-off events. For 19014/19014 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13148 event pairs, 240 based on Foata normal form. 5/2016 useless extension candidates. Maximal degree in co-relation 11345. Up to 1237 conditions per place. [2024-11-22 13:55:08,535 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 177 selfloop transitions, 137 changer transitions 17/332 dead transitions. [2024-11-22 13:55:08,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 332 transitions, 5932 flow [2024-11-22 13:55:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 13:55:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 13:55:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 187 transitions. [2024-11-22 13:55:08,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2024-11-22 13:55:08,536 INFO L175 Difference]: Start difference. First operand has 197 places, 228 transitions, 3953 flow. Second operand 23 states and 187 transitions. [2024-11-22 13:55:08,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 332 transitions, 5932 flow [2024-11-22 13:55:08,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 332 transitions, 5859 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-22 13:55:08,593 INFO L231 Difference]: Finished difference. Result has 218 places, 263 transitions, 4921 flow [2024-11-22 13:55:08,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4921, PETRI_PLACES=218, PETRI_TRANSITIONS=263} [2024-11-22 13:55:08,593 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2024-11-22 13:55:08,593 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 263 transitions, 4921 flow [2024-11-22 13:55:08,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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) [2024-11-22 13:55:08,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:08,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:08,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:08,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:08,794 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:08,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash -533642495, now seen corresponding path program 16 times [2024-11-22 13:55:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:08,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437642444] [2024-11-22 13:55:08,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:08,799 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:08,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:08,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437642444] [2024-11-22 13:55:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437642444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793722704] [2024-11-22 13:55:08,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:08,895 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) [2024-11-22 13:55:08,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 13:55:08,926 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:08,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:08,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:08,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:09,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793722704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:09,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819291263] [2024-11-22 13:55:09,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:09,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:09,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 263 transitions, 4921 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 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) [2024-11-22 13:55:09,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:09,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:09,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:09,644 INFO L124 PetriNetUnfolderBase]: 1013/2084 cut-off events. [2024-11-22 13:55:09,644 INFO L125 PetriNetUnfolderBase]: For 20875/20875 co-relation queries the response was YES. [2024-11-22 13:55:09,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12148 conditions, 2084 events. 1013/2084 cut-off events. For 20875/20875 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13874 event pairs, 246 based on Foata normal form. 4/2088 useless extension candidates. Maximal degree in co-relation 12079. Up to 1381 conditions per place. [2024-11-22 13:55:09,656 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 166 selfloop transitions, 110 changer transitions 33/310 dead transitions. [2024-11-22 13:55:09,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 310 transitions, 6060 flow [2024-11-22 13:55:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:55:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:55:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 111 transitions. [2024-11-22 13:55:09,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3881118881118881 [2024-11-22 13:55:09,658 INFO L175 Difference]: Start difference. First operand has 218 places, 263 transitions, 4921 flow. Second operand 13 states and 111 transitions. [2024-11-22 13:55:09,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 310 transitions, 6060 flow [2024-11-22 13:55:09,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 310 transitions, 6004 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-11-22 13:55:09,731 INFO L231 Difference]: Finished difference. Result has 225 places, 251 transitions, 4947 flow [2024-11-22 13:55:09,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4871, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4947, PETRI_PLACES=225, PETRI_TRANSITIONS=251} [2024-11-22 13:55:09,731 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 201 predicate places. [2024-11-22 13:55:09,731 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 251 transitions, 4947 flow [2024-11-22 13:55:09,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 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) [2024-11-22 13:55:09,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:09,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:09,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:09,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:09,932 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:09,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1108211547, now seen corresponding path program 17 times [2024-11-22 13:55:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:09,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376221136] [2024-11-22 13:55:09,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:09,937 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:09,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376221136] [2024-11-22 13:55:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376221136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403452007] [2024-11-22 13:55:10,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:10,008 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) [2024-11-22 13:55:10,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 13:55:10,047 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:10,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:10,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:55:10,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:10,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:55:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403452007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:55:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2024-11-22 13:55:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502405901] [2024-11-22 13:55:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:10,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:55:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:55:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:55:10,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:10,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 251 transitions, 4947 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2024-11-22 13:55:10,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:10,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:10,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:10,373 INFO L124 PetriNetUnfolderBase]: 955/1970 cut-off events. [2024-11-22 13:55:10,373 INFO L125 PetriNetUnfolderBase]: For 20604/20604 co-relation queries the response was YES. [2024-11-22 13:55:10,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11751 conditions, 1970 events. 955/1970 cut-off events. For 20604/20604 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12952 event pairs, 90 based on Foata normal form. 9/1979 useless extension candidates. Maximal degree in co-relation 11680. Up to 709 conditions per place. [2024-11-22 13:55:10,382 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 113 selfloop transitions, 101 changer transitions 61/276 dead transitions. [2024-11-22 13:55:10,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 276 transitions, 5798 flow [2024-11-22 13:55:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:55:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:55:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 76 transitions. [2024-11-22 13:55:10,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-11-22 13:55:10,383 INFO L175 Difference]: Start difference. First operand has 225 places, 251 transitions, 4947 flow. Second operand 9 states and 76 transitions. [2024-11-22 13:55:10,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 276 transitions, 5798 flow [2024-11-22 13:55:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 276 transitions, 5408 flow, removed 16 selfloop flow, removed 15 redundant places. [2024-11-22 13:55:10,444 INFO L231 Difference]: Finished difference. Result has 218 places, 204 transitions, 4001 flow [2024-11-22 13:55:10,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4563, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4001, PETRI_PLACES=218, PETRI_TRANSITIONS=204} [2024-11-22 13:55:10,444 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2024-11-22 13:55:10,444 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 204 transitions, 4001 flow [2024-11-22 13:55:10,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2024-11-22 13:55:10,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:10,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:10,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:10,645 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,SelfDestructingSolverStorable45 [2024-11-22 13:55:10,645 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:10,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash -97233023, now seen corresponding path program 18 times [2024-11-22 13:55:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:10,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662966137] [2024-11-22 13:55:10,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:10,652 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:55:10,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662966137] [2024-11-22 13:55:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662966137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959101666] [2024-11-22 13:55:10,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:10,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:10,773 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) [2024-11-22 13:55:10,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 13:55:10,812 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 13:55:10,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:10,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:10,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:10,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:11,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959101666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:11,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:11,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834532842] [2024-11-22 13:55:11,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:11,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:11,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:11,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 204 transitions, 4001 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:11,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:11,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:11,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:11,486 INFO L124 PetriNetUnfolderBase]: 746/1627 cut-off events. [2024-11-22 13:55:11,486 INFO L125 PetriNetUnfolderBase]: For 15316/15316 co-relation queries the response was YES. [2024-11-22 13:55:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9638 conditions, 1627 events. 746/1627 cut-off events. For 15316/15316 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10879 event pairs, 170 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 9570. Up to 992 conditions per place. [2024-11-22 13:55:11,496 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 159 selfloop transitions, 82 changer transitions 17/259 dead transitions. [2024-11-22 13:55:11,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 259 transitions, 5276 flow [2024-11-22 13:55:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:55:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:55:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 104 transitions. [2024-11-22 13:55:11,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-22 13:55:11,497 INFO L175 Difference]: Start difference. First operand has 218 places, 204 transitions, 4001 flow. Second operand 13 states and 104 transitions. [2024-11-22 13:55:11,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 259 transitions, 5276 flow [2024-11-22 13:55:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 259 transitions, 4675 flow, removed 19 selfloop flow, removed 20 redundant places. [2024-11-22 13:55:11,571 INFO L231 Difference]: Finished difference. Result has 198 places, 214 transitions, 3889 flow [2024-11-22 13:55:11,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3889, PETRI_PLACES=198, PETRI_TRANSITIONS=214} [2024-11-22 13:55:11,572 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2024-11-22 13:55:11,572 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 214 transitions, 3889 flow [2024-11-22 13:55:11,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:11,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:11,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:11,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:11,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-22 13:55:11,773 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:11,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1365323339, now seen corresponding path program 19 times [2024-11-22 13:55:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089951451] [2024-11-22 13:55:11,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:11,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089951451] [2024-11-22 13:55:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089951451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782455909] [2024-11-22 13:55:11,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:11,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:11,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:11,872 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) [2024-11-22 13:55:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 13:55:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:11,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:11,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:11,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782455909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:12,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684253006] [2024-11-22 13:55:12,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:12,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:12,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:12,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 214 transitions, 3889 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 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) [2024-11-22 13:55:12,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:12,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:12,519 INFO L124 PetriNetUnfolderBase]: 707/1535 cut-off events. [2024-11-22 13:55:12,520 INFO L125 PetriNetUnfolderBase]: For 11584/11584 co-relation queries the response was YES. [2024-11-22 13:55:12,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8480 conditions, 1535 events. 707/1535 cut-off events. For 11584/11584 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10087 event pairs, 51 based on Foata normal form. 8/1543 useless extension candidates. Maximal degree in co-relation 8419. Up to 416 conditions per place. [2024-11-22 13:55:12,532 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 89 selfloop transitions, 140 changer transitions 31/261 dead transitions. [2024-11-22 13:55:12,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 261 transitions, 4902 flow [2024-11-22 13:55:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:55:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:55:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 118 transitions. [2024-11-22 13:55:12,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-11-22 13:55:12,533 INFO L175 Difference]: Start difference. First operand has 198 places, 214 transitions, 3889 flow. Second operand 15 states and 118 transitions. [2024-11-22 13:55:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 261 transitions, 4902 flow [2024-11-22 13:55:12,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 261 transitions, 4846 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-22 13:55:12,594 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 4041 flow [2024-11-22 13:55:12,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4041, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2024-11-22 13:55:12,595 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 183 predicate places. [2024-11-22 13:55:12,595 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 4041 flow [2024-11-22 13:55:12,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 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) [2024-11-22 13:55:12,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:12,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:12,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-22 13:55:12,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-22 13:55:12,796 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:12,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2089798099, now seen corresponding path program 20 times [2024-11-22 13:55:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474901085] [2024-11-22 13:55:12,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:12,803 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:12,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:12,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474901085] [2024-11-22 13:55:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474901085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456256510] [2024-11-22 13:55:12,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:12,919 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) [2024-11-22 13:55:12,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 13:55:12,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:12,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:12,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:12,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:13,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456256510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:13,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600491422] [2024-11-22 13:55:13,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:13,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:13,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:13,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 4041 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:13,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:13,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:13,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:13,599 INFO L124 PetriNetUnfolderBase]: 605/1289 cut-off events. [2024-11-22 13:55:13,599 INFO L125 PetriNetUnfolderBase]: For 12167/12167 co-relation queries the response was YES. [2024-11-22 13:55:13,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7887 conditions, 1289 events. 605/1289 cut-off events. For 12167/12167 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7958 event pairs, 39 based on Foata normal form. 4/1293 useless extension candidates. Maximal degree in co-relation 7823. Up to 403 conditions per place. [2024-11-22 13:55:13,609 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 86 selfloop transitions, 113 changer transitions 36/236 dead transitions. [2024-11-22 13:55:13,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 236 transitions, 4725 flow [2024-11-22 13:55:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:55:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:55:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 110 transitions. [2024-11-22 13:55:13,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-22 13:55:13,611 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 4041 flow. Second operand 14 states and 110 transitions. [2024-11-22 13:55:13,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 236 transitions, 4725 flow [2024-11-22 13:55:13,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 236 transitions, 4499 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-11-22 13:55:13,661 INFO L231 Difference]: Finished difference. Result has 205 places, 177 transitions, 3465 flow [2024-11-22 13:55:13,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3465, PETRI_PLACES=205, PETRI_TRANSITIONS=177} [2024-11-22 13:55:13,661 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2024-11-22 13:55:13,661 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 177 transitions, 3465 flow [2024-11-22 13:55:13,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:13,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:13,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:13,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:13,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:13,862 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:13,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 915459509, now seen corresponding path program 21 times [2024-11-22 13:55:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983817687] [2024-11-22 13:55:13,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:13,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:13,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983817687] [2024-11-22 13:55:13,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983817687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:13,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823930676] [2024-11-22 13:55:13,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:13,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:13,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:13,973 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) [2024-11-22 13:55:13,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 13:55:14,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:14,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:14,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:14,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:14,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823930676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:14,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-22 13:55:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996750688] [2024-11-22 13:55:14,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:14,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:55:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:55:14,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:55:14,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:14,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 177 transitions, 3465 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:14,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:14,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:14,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:14,621 INFO L124 PetriNetUnfolderBase]: 588/1277 cut-off events. [2024-11-22 13:55:14,621 INFO L125 PetriNetUnfolderBase]: For 10881/10881 co-relation queries the response was YES. [2024-11-22 13:55:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 1277 events. 588/1277 cut-off events. For 10881/10881 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7967 event pairs, 89 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 7347. Up to 469 conditions per place. [2024-11-22 13:55:14,628 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 104 selfloop transitions, 77 changer transitions 44/226 dead transitions. [2024-11-22 13:55:14,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 4445 flow [2024-11-22 13:55:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:55:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:55:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 107 transitions. [2024-11-22 13:55:14,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3741258741258741 [2024-11-22 13:55:14,629 INFO L175 Difference]: Start difference. First operand has 205 places, 177 transitions, 3465 flow. Second operand 13 states and 107 transitions. [2024-11-22 13:55:14,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 4445 flow [2024-11-22 13:55:14,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 226 transitions, 3921 flow, removed 13 selfloop flow, removed 20 redundant places. [2024-11-22 13:55:14,663 INFO L231 Difference]: Finished difference. Result has 190 places, 158 transitions, 2818 flow [2024-11-22 13:55:14,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2818, PETRI_PLACES=190, PETRI_TRANSITIONS=158} [2024-11-22 13:55:14,664 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 166 predicate places. [2024-11-22 13:55:14,664 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 158 transitions, 2818 flow [2024-11-22 13:55:14,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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) [2024-11-22 13:55:14,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:14,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:14,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-22 13:55:14,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-22 13:55:14,865 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:14,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 500103635, now seen corresponding path program 22 times [2024-11-22 13:55:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571433346] [2024-11-22 13:55:14,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:14,868 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:14,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571433346] [2024-11-22 13:55:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571433346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449334737] [2024-11-22 13:55:14,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:14,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:14,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:14,975 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) [2024-11-22 13:55:14,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-22 13:55:15,016 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:15,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:15,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:15,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:15,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449334737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:15,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-22 13:55:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118032728] [2024-11-22 13:55:15,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:15,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:55:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:55:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:55:15,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:15,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 158 transitions, 2818 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:15,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:15,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:15,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:15,640 INFO L124 PetriNetUnfolderBase]: 443/967 cut-off events. [2024-11-22 13:55:15,640 INFO L125 PetriNetUnfolderBase]: For 8467/8467 co-relation queries the response was YES. [2024-11-22 13:55:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 967 events. 443/967 cut-off events. For 8467/8467 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5543 event pairs, 19 based on Foata normal form. 4/971 useless extension candidates. Maximal degree in co-relation 5386. Up to 304 conditions per place. [2024-11-22 13:55:15,644 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 67 selfloop transitions, 71 changer transitions 48/187 dead transitions. [2024-11-22 13:55:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 187 transitions, 3399 flow [2024-11-22 13:55:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:55:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:55:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 104 transitions. [2024-11-22 13:55:15,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-11-22 13:55:15,645 INFO L175 Difference]: Start difference. First operand has 190 places, 158 transitions, 2818 flow. Second operand 14 states and 104 transitions. [2024-11-22 13:55:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 187 transitions, 3399 flow [2024-11-22 13:55:15,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 187 transitions, 3090 flow, removed 23 selfloop flow, removed 16 redundant places. [2024-11-22 13:55:15,669 INFO L231 Difference]: Finished difference. Result has 183 places, 124 transitions, 2048 flow [2024-11-22 13:55:15,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2048, PETRI_PLACES=183, PETRI_TRANSITIONS=124} [2024-11-22 13:55:15,670 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 159 predicate places. [2024-11-22 13:55:15,670 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 124 transitions, 2048 flow [2024-11-22 13:55:15,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:15,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:15,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:15,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:15,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:15,871 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:15,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1884829229, now seen corresponding path program 23 times [2024-11-22 13:55:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050987073] [2024-11-22 13:55:15,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:15,876 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:15,876 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050987073] [2024-11-22 13:55:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050987073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250189398] [2024-11-22 13:55:15,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:15,944 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) [2024-11-22 13:55:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-22 13:55:15,975 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:15,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:15,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:55:15,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:16,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:16,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250189398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:16,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:16,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-22 13:55:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291221750] [2024-11-22 13:55:16,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:16,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:55:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:55:16,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:55:16,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:16,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 124 transitions, 2048 flow. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2024-11-22 13:55:16,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:16,313 INFO L124 PetriNetUnfolderBase]: 322/701 cut-off events. [2024-11-22 13:55:16,313 INFO L125 PetriNetUnfolderBase]: For 5950/5950 co-relation queries the response was YES. [2024-11-22 13:55:16,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 701 events. 322/701 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3616 event pairs, 23 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 3798. Up to 257 conditions per place. [2024-11-22 13:55:16,316 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 73 selfloop transitions, 58 changer transitions 13/145 dead transitions. [2024-11-22 13:55:16,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 145 transitions, 2433 flow [2024-11-22 13:55:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:55:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:55:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-11-22 13:55:16,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-22 13:55:16,317 INFO L175 Difference]: Start difference. First operand has 183 places, 124 transitions, 2048 flow. Second operand 10 states and 84 transitions. [2024-11-22 13:55:16,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 145 transitions, 2433 flow [2024-11-22 13:55:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 2069 flow, removed 20 selfloop flow, removed 23 redundant places. [2024-11-22 13:55:16,330 INFO L231 Difference]: Finished difference. Result has 151 places, 118 transitions, 1743 flow [2024-11-22 13:55:16,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1743, PETRI_PLACES=151, PETRI_TRANSITIONS=118} [2024-11-22 13:55:16,331 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 127 predicate places. [2024-11-22 13:55:16,331 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 118 transitions, 1743 flow [2024-11-22 13:55:16,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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) [2024-11-22 13:55:16,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:16,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:16,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:16,532 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,SelfDestructingSolverStorable51 [2024-11-22 13:55:16,532 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:16,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:16,532 INFO L85 PathProgramCache]: Analyzing trace with hash 544711093, now seen corresponding path program 24 times [2024-11-22 13:55:16,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:16,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728066792] [2024-11-22 13:55:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:16,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:16,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728066792] [2024-11-22 13:55:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728066792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796569717] [2024-11-22 13:55:16,637 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:16,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:16,638 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) [2024-11-22 13:55:16,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-22 13:55:16,670 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:16,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:16,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:16,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:16,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796569717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:16,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:16,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-22 13:55:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154259556] [2024-11-22 13:55:16,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:16,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 13:55:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 13:55:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:55:16,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:16,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 118 transitions, 1743 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 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) [2024-11-22 13:55:16,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:16,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:16,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:17,305 INFO L124 PetriNetUnfolderBase]: 430/922 cut-off events. [2024-11-22 13:55:17,306 INFO L125 PetriNetUnfolderBase]: For 6293/6293 co-relation queries the response was YES. [2024-11-22 13:55:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 922 events. 430/922 cut-off events. For 6293/6293 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5144 event pairs, 9 based on Foata normal form. 7/929 useless extension candidates. Maximal degree in co-relation 4791. Up to 204 conditions per place. [2024-11-22 13:55:17,309 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 78 selfloop transitions, 96 changer transitions 42/217 dead transitions. [2024-11-22 13:55:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 217 transitions, 3282 flow [2024-11-22 13:55:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:55:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 13:55:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 161 transitions. [2024-11-22 13:55:17,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3659090909090909 [2024-11-22 13:55:17,310 INFO L175 Difference]: Start difference. First operand has 151 places, 118 transitions, 1743 flow. Second operand 20 states and 161 transitions. [2024-11-22 13:55:17,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 217 transitions, 3282 flow [2024-11-22 13:55:17,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 3003 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-22 13:55:17,323 INFO L231 Difference]: Finished difference. Result has 166 places, 135 transitions, 2133 flow [2024-11-22 13:55:17,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2133, PETRI_PLACES=166, PETRI_TRANSITIONS=135} [2024-11-22 13:55:17,323 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-11-22 13:55:17,323 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 135 transitions, 2133 flow [2024-11-22 13:55:17,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 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) [2024-11-22 13:55:17,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:17,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:17,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:17,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:17,525 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:17,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -118024165, now seen corresponding path program 25 times [2024-11-22 13:55:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:17,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278375880] [2024-11-22 13:55:17,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:17,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:17,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278375880] [2024-11-22 13:55:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278375880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:17,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156252891] [2024-11-22 13:55:17,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:17,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:17,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:17,611 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) [2024-11-22 13:55:17,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-22 13:55:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:17,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:55:17,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:17,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:17,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156252891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:17,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:17,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-22 13:55:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445005242] [2024-11-22 13:55:17,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:17,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 13:55:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 13:55:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:55:17,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:17,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 135 transitions, 2133 flow. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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) [2024-11-22 13:55:17,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:17,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:17,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:18,356 INFO L124 PetriNetUnfolderBase]: 339/708 cut-off events. [2024-11-22 13:55:18,356 INFO L125 PetriNetUnfolderBase]: For 5534/5534 co-relation queries the response was YES. [2024-11-22 13:55:18,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 708 events. 339/708 cut-off events. For 5534/5534 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3518 event pairs, 9 based on Foata normal form. 3/711 useless extension candidates. Maximal degree in co-relation 3932. Up to 152 conditions per place. [2024-11-22 13:55:18,359 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 75 selfloop transitions, 91 changer transitions 27/194 dead transitions. [2024-11-22 13:55:18,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 194 transitions, 2806 flow [2024-11-22 13:55:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:55:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:55:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 182 transitions. [2024-11-22 13:55:18,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-11-22 13:55:18,360 INFO L175 Difference]: Start difference. First operand has 166 places, 135 transitions, 2133 flow. Second operand 24 states and 182 transitions. [2024-11-22 13:55:18,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 194 transitions, 2806 flow [2024-11-22 13:55:18,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 194 transitions, 2638 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-11-22 13:55:18,378 INFO L231 Difference]: Finished difference. Result has 180 places, 128 transitions, 2065 flow [2024-11-22 13:55:18,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2065, PETRI_PLACES=180, PETRI_TRANSITIONS=128} [2024-11-22 13:55:18,379 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 156 predicate places. [2024-11-22 13:55:18,379 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 128 transitions, 2065 flow [2024-11-22 13:55:18,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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) [2024-11-22 13:55:18,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:18,379 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:18,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:18,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:18,579 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:18,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1470143264, now seen corresponding path program 26 times [2024-11-22 13:55:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063368347] [2024-11-22 13:55:18,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:18,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:18,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:18,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:18,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063368347] [2024-11-22 13:55:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063368347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:18,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486858178] [2024-11-22 13:55:18,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:18,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:18,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:18,631 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) [2024-11-22 13:55:18,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-22 13:55:18,669 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:18,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:18,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:55:18,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:18,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486858178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:18,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 25 [2024-11-22 13:55:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813052153] [2024-11-22 13:55:18,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:18,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 13:55:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 13:55:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:55:18,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:18,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 128 transitions, 2065 flow. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 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) [2024-11-22 13:55:18,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:18,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:18,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:19,372 INFO L124 PetriNetUnfolderBase]: 286/595 cut-off events. [2024-11-22 13:55:19,372 INFO L125 PetriNetUnfolderBase]: For 5167/5167 co-relation queries the response was YES. [2024-11-22 13:55:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3633 conditions, 595 events. 286/595 cut-off events. For 5167/5167 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2737 event pairs, 33 based on Foata normal form. 6/601 useless extension candidates. Maximal degree in co-relation 3579. Up to 226 conditions per place. [2024-11-22 13:55:19,375 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 77 selfloop transitions, 69 changer transitions 17/164 dead transitions. [2024-11-22 13:55:19,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 164 transitions, 2564 flow [2024-11-22 13:55:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:55:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 13:55:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 131 transitions. [2024-11-22 13:55:19,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-11-22 13:55:19,376 INFO L175 Difference]: Start difference. First operand has 180 places, 128 transitions, 2065 flow. Second operand 18 states and 131 transitions. [2024-11-22 13:55:19,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 164 transitions, 2564 flow [2024-11-22 13:55:19,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 2195 flow, removed 19 selfloop flow, removed 26 redundant places. [2024-11-22 13:55:19,395 INFO L231 Difference]: Finished difference. Result has 163 places, 126 transitions, 1852 flow [2024-11-22 13:55:19,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1852, PETRI_PLACES=163, PETRI_TRANSITIONS=126} [2024-11-22 13:55:19,396 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 139 predicate places. [2024-11-22 13:55:19,396 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 126 transitions, 1852 flow [2024-11-22 13:55:19,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 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) [2024-11-22 13:55:19,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:19,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:19,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:19,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:19,598 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:19,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash -965811978, now seen corresponding path program 27 times [2024-11-22 13:55:19,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:19,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627324217] [2024-11-22 13:55:19,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:19,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:19,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:19,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:19,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627324217] [2024-11-22 13:55:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627324217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291874514] [2024-11-22 13:55:19,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:19,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:19,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:19,674 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) [2024-11-22 13:55:19,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-22 13:55:19,710 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:55:19,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:19,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:55:19,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:55:19,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:55:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291874514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:19,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:55:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2024-11-22 13:55:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841548072] [2024-11-22 13:55:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:19,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:55:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:55:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:55:19,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:19,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 126 transitions, 1852 flow. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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) [2024-11-22 13:55:19,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:19,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:19,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:19,879 INFO L124 PetriNetUnfolderBase]: 271/561 cut-off events. [2024-11-22 13:55:19,879 INFO L125 PetriNetUnfolderBase]: For 4148/4148 co-relation queries the response was YES. [2024-11-22 13:55:19,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 561 events. 271/561 cut-off events. For 4148/4148 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2509 event pairs, 34 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3185. Up to 188 conditions per place. [2024-11-22 13:55:19,881 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 86 selfloop transitions, 42 changer transitions 15/144 dead transitions. [2024-11-22 13:55:19,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 144 transitions, 2219 flow [2024-11-22 13:55:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:55:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:55:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 75 transitions. [2024-11-22 13:55:19,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-11-22 13:55:19,882 INFO L175 Difference]: Start difference. First operand has 163 places, 126 transitions, 1852 flow. Second operand 9 states and 75 transitions. [2024-11-22 13:55:19,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 144 transitions, 2219 flow [2024-11-22 13:55:19,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 1995 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-11-22 13:55:19,893 INFO L231 Difference]: Finished difference. Result has 149 places, 118 transitions, 1615 flow [2024-11-22 13:55:19,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=149, PETRI_TRANSITIONS=118} [2024-11-22 13:55:19,894 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2024-11-22 13:55:19,894 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 118 transitions, 1615 flow [2024-11-22 13:55:19,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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) [2024-11-22 13:55:19,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:19,894 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:19,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:20,094 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,SelfDestructingSolverStorable55 [2024-11-22 13:55:20,095 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:20,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash -85351802, now seen corresponding path program 28 times [2024-11-22 13:55:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444074778] [2024-11-22 13:55:20,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:20,098 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:20,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:20,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444074778] [2024-11-22 13:55:20,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444074778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:20,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467990689] [2024-11-22 13:55:20,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:20,135 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) [2024-11-22 13:55:20,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-22 13:55:20,173 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:20,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:20,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:55:20,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467990689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:20,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 13:55:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815333483] [2024-11-22 13:55:20,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:20,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:55:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:55:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:55:20,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:55:20,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 118 transitions, 1615 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) [2024-11-22 13:55:20,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:20,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:55:20,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:20,445 INFO L124 PetriNetUnfolderBase]: 285/612 cut-off events. [2024-11-22 13:55:20,445 INFO L125 PetriNetUnfolderBase]: For 5265/5265 co-relation queries the response was YES. [2024-11-22 13:55:20,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3650 conditions, 612 events. 285/612 cut-off events. For 5265/5265 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3026 event pairs, 54 based on Foata normal form. 14/616 useless extension candidates. Maximal degree in co-relation 3604. Up to 198 conditions per place. [2024-11-22 13:55:20,448 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 92 selfloop transitions, 67 changer transitions 4/188 dead transitions. [2024-11-22 13:55:20,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 188 transitions, 2672 flow [2024-11-22 13:55:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:55:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:55:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 149 transitions. [2024-11-22 13:55:20,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-11-22 13:55:20,449 INFO L175 Difference]: Start difference. First operand has 149 places, 118 transitions, 1615 flow. Second operand 16 states and 149 transitions. [2024-11-22 13:55:20,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 188 transitions, 2672 flow [2024-11-22 13:55:20,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2442 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-11-22 13:55:20,463 INFO L231 Difference]: Finished difference. Result has 159 places, 155 transitions, 2188 flow [2024-11-22 13:55:20,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2188, PETRI_PLACES=159, PETRI_TRANSITIONS=155} [2024-11-22 13:55:20,464 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2024-11-22 13:55:20,464 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 155 transitions, 2188 flow [2024-11-22 13:55:20,464 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) [2024-11-22 13:55:20,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:20,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:20,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:20,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:20,665 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:20,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1074698506, now seen corresponding path program 29 times [2024-11-22 13:55:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858486605] [2024-11-22 13:55:20,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:20,669 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:20,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:20,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858486605] [2024-11-22 13:55:20,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858486605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:20,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689514044] [2024-11-22 13:55:20,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:20,708 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) [2024-11-22 13:55:20,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-22 13:55:20,743 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:20,743 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:20,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:55:20,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689514044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:20,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:20,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 13:55:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432353859] [2024-11-22 13:55:20,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:20,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:55:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:20,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:55:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:55:20,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:55:20,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 155 transitions, 2188 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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) [2024-11-22 13:55:20,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:20,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:55:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:21,045 INFO L124 PetriNetUnfolderBase]: 311/645 cut-off events. [2024-11-22 13:55:21,046 INFO L125 PetriNetUnfolderBase]: For 4807/4807 co-relation queries the response was YES. [2024-11-22 13:55:21,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4092 conditions, 645 events. 311/645 cut-off events. For 4807/4807 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3086 event pairs, 71 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 4042. Up to 290 conditions per place. [2024-11-22 13:55:21,050 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 111 selfloop transitions, 55 changer transitions 3/191 dead transitions. [2024-11-22 13:55:21,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 191 transitions, 2906 flow [2024-11-22 13:55:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:55:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:55:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-11-22 13:55:21,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-22 13:55:21,050 INFO L175 Difference]: Start difference. First operand has 159 places, 155 transitions, 2188 flow. Second operand 12 states and 112 transitions. [2024-11-22 13:55:21,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 191 transitions, 2906 flow [2024-11-22 13:55:21,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 191 transitions, 2797 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-11-22 13:55:21,067 INFO L231 Difference]: Finished difference. Result has 167 places, 169 transitions, 2480 flow [2024-11-22 13:55:21,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2480, PETRI_PLACES=167, PETRI_TRANSITIONS=169} [2024-11-22 13:55:21,067 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 143 predicate places. [2024-11-22 13:55:21,067 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 169 transitions, 2480 flow [2024-11-22 13:55:21,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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) [2024-11-22 13:55:21,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:21,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:21,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:21,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:21,268 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:21,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash -692610676, now seen corresponding path program 30 times [2024-11-22 13:55:21,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:21,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125635769] [2024-11-22 13:55:21,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:21,273 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:21,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:55:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:21,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125635769] [2024-11-22 13:55:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125635769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:21,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270495598] [2024-11-22 13:55:21,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:21,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:21,356 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) [2024-11-22 13:55:21,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-22 13:55:21,388 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:21,388 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:21,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:21,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:21,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270495598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:21,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:21,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 23 [2024-11-22 13:55:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361362536] [2024-11-22 13:55:21,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:21,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:55:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:55:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:55:21,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 169 transitions, 2480 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 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) [2024-11-22 13:55:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:22,270 INFO L124 PetriNetUnfolderBase]: 575/1121 cut-off events. [2024-11-22 13:55:22,270 INFO L125 PetriNetUnfolderBase]: For 7355/7355 co-relation queries the response was YES. [2024-11-22 13:55:22,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7008 conditions, 1121 events. 575/1121 cut-off events. For 7355/7355 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5955 event pairs, 6 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 6955. Up to 245 conditions per place. [2024-11-22 13:55:22,277 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 130 selfloop transitions, 177 changer transitions 33/341 dead transitions. [2024-11-22 13:55:22,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 341 transitions, 5041 flow [2024-11-22 13:55:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 13:55:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-22 13:55:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 249 transitions. [2024-11-22 13:55:22,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34297520661157027 [2024-11-22 13:55:22,279 INFO L175 Difference]: Start difference. First operand has 167 places, 169 transitions, 2480 flow. Second operand 33 states and 249 transitions. [2024-11-22 13:55:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 341 transitions, 5041 flow [2024-11-22 13:55:22,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 341 transitions, 4986 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-22 13:55:22,312 INFO L231 Difference]: Finished difference. Result has 202 places, 235 transitions, 3938 flow [2024-11-22 13:55:22,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3938, PETRI_PLACES=202, PETRI_TRANSITIONS=235} [2024-11-22 13:55:22,313 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 178 predicate places. [2024-11-22 13:55:22,313 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 235 transitions, 3938 flow [2024-11-22 13:55:22,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 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) [2024-11-22 13:55:22,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:22,313 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:22,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:22,514 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,SelfDestructingSolverStorable58 [2024-11-22 13:55:22,514 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:22,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1306302690, now seen corresponding path program 31 times [2024-11-22 13:55:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831361746] [2024-11-22 13:55:22,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831361746] [2024-11-22 13:55:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831361746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198204801] [2024-11-22 13:55:22,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:22,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:22,655 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) [2024-11-22 13:55:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-22 13:55:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:22,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:22,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:22,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198204801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:22,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-22 13:55:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554140514] [2024-11-22 13:55:22,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:22,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 13:55:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 13:55:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2024-11-22 13:55:23,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:23,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 235 transitions, 3938 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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) [2024-11-22 13:55:23,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:23,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:23,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:23,400 INFO L124 PetriNetUnfolderBase]: 558/1079 cut-off events. [2024-11-22 13:55:23,401 INFO L125 PetriNetUnfolderBase]: For 8999/8999 co-relation queries the response was YES. [2024-11-22 13:55:23,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7494 conditions, 1079 events. 558/1079 cut-off events. For 8999/8999 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5572 event pairs, 3 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 7433. Up to 297 conditions per place. [2024-11-22 13:55:23,406 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 162 selfloop transitions, 109 changer transitions 14/286 dead transitions. [2024-11-22 13:55:23,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 286 transitions, 4904 flow [2024-11-22 13:55:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:55:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:55:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 118 transitions. [2024-11-22 13:55:23,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-11-22 13:55:23,407 INFO L175 Difference]: Start difference. First operand has 202 places, 235 transitions, 3938 flow. Second operand 15 states and 118 transitions. [2024-11-22 13:55:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 286 transitions, 4904 flow [2024-11-22 13:55:23,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 286 transitions, 4304 flow, removed 89 selfloop flow, removed 18 redundant places. [2024-11-22 13:55:23,451 INFO L231 Difference]: Finished difference. Result has 195 places, 241 transitions, 3855 flow [2024-11-22 13:55:23,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3855, PETRI_PLACES=195, PETRI_TRANSITIONS=241} [2024-11-22 13:55:23,452 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 171 predicate places. [2024-11-22 13:55:23,452 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 241 transitions, 3855 flow [2024-11-22 13:55:23,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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) [2024-11-22 13:55:23,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:23,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:23,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:23,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-22 13:55:23,653 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:23,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash -565474696, now seen corresponding path program 32 times [2024-11-22 13:55:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:23,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565802234] [2024-11-22 13:55:23,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:23,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:23,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:23,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:23,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565802234] [2024-11-22 13:55:23,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565802234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531153826] [2024-11-22 13:55:23,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:23,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:23,764 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) [2024-11-22 13:55:23,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-22 13:55:23,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:23,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:23,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:23,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:23,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531153826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:24,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:24,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-22 13:55:24,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642202451] [2024-11-22 13:55:24,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:24,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 13:55:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 13:55:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:55:24,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:24,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 241 transitions, 3855 flow. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 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) [2024-11-22 13:55:24,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:24,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:24,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:24,360 INFO L124 PetriNetUnfolderBase]: 535/1031 cut-off events. [2024-11-22 13:55:24,360 INFO L125 PetriNetUnfolderBase]: For 7727/7727 co-relation queries the response was YES. [2024-11-22 13:55:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6901 conditions, 1031 events. 535/1031 cut-off events. For 7727/7727 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5206 event pairs, 154 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 6843. Up to 582 conditions per place. [2024-11-22 13:55:24,366 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 183 selfloop transitions, 51 changer transitions 29/264 dead transitions. [2024-11-22 13:55:24,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 264 transitions, 4463 flow [2024-11-22 13:55:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:55:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:55:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 97 transitions. [2024-11-22 13:55:24,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31493506493506496 [2024-11-22 13:55:24,367 INFO L175 Difference]: Start difference. First operand has 195 places, 241 transitions, 3855 flow. Second operand 14 states and 97 transitions. [2024-11-22 13:55:24,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 264 transitions, 4463 flow [2024-11-22 13:55:24,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 264 transitions, 4385 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-22 13:55:24,398 INFO L231 Difference]: Finished difference. Result has 198 places, 229 transitions, 3720 flow [2024-11-22 13:55:24,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3720, PETRI_PLACES=198, PETRI_TRANSITIONS=229} [2024-11-22 13:55:24,399 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2024-11-22 13:55:24,399 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 229 transitions, 3720 flow [2024-11-22 13:55:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 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) [2024-11-22 13:55:24,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:24,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:24,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:24,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:24,600 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:24,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash -591608856, now seen corresponding path program 33 times [2024-11-22 13:55:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:24,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346856086] [2024-11-22 13:55:24,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:24,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:55:24,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346856086] [2024-11-22 13:55:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346856086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288641382] [2024-11-22 13:55:24,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:55:24,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:24,693 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) [2024-11-22 13:55:24,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-22 13:55:24,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:55:24,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:24,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:24,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:24,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288641382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:24,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2024-11-22 13:55:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405814967] [2024-11-22 13:55:24,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:24,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:55:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:55:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:55:24,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:24,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 229 transitions, 3720 flow. Second operand has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 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) [2024-11-22 13:55:24,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:24,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:24,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:25,506 INFO L124 PetriNetUnfolderBase]: 598/1139 cut-off events. [2024-11-22 13:55:25,506 INFO L125 PetriNetUnfolderBase]: For 8582/8582 co-relation queries the response was YES. [2024-11-22 13:55:25,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7629 conditions, 1139 events. 598/1139 cut-off events. For 8582/8582 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5873 event pairs, 3 based on Foata normal form. 9/1148 useless extension candidates. Maximal degree in co-relation 7571. Up to 247 conditions per place. [2024-11-22 13:55:25,512 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 52 selfloop transitions, 97 changer transitions 159/309 dead transitions. [2024-11-22 13:55:25,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 309 transitions, 5119 flow [2024-11-22 13:55:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 13:55:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 13:55:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 161 transitions. [2024-11-22 13:55:25,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30492424242424243 [2024-11-22 13:55:25,513 INFO L175 Difference]: Start difference. First operand has 198 places, 229 transitions, 3720 flow. Second operand 24 states and 161 transitions. [2024-11-22 13:55:25,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 309 transitions, 5119 flow [2024-11-22 13:55:25,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 309 transitions, 4937 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-22 13:55:25,550 INFO L231 Difference]: Finished difference. Result has 200 places, 135 transitions, 2170 flow [2024-11-22 13:55:25,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2170, PETRI_PLACES=200, PETRI_TRANSITIONS=135} [2024-11-22 13:55:25,551 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 176 predicate places. [2024-11-22 13:55:25,551 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 135 transitions, 2170 flow [2024-11-22 13:55:25,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 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) [2024-11-22 13:55:25,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:25,551 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:25,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-22 13:55:25,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:25,752 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:25,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 149824270, now seen corresponding path program 34 times [2024-11-22 13:55:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133331710] [2024-11-22 13:55:25,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:25,756 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:25,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:25,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133331710] [2024-11-22 13:55:25,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133331710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:25,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234996438] [2024-11-22 13:55:25,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:55:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:25,866 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) [2024-11-22 13:55:25,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-22 13:55:25,898 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:55:25,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:25,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:25,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:26,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:26,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234996438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:26,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-22 13:55:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276826760] [2024-11-22 13:55:26,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:26,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 13:55:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 13:55:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2024-11-22 13:55:26,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:26,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 135 transitions, 2170 flow. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 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) [2024-11-22 13:55:26,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:26,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:26,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:26,568 INFO L124 PetriNetUnfolderBase]: 297/588 cut-off events. [2024-11-22 13:55:26,569 INFO L125 PetriNetUnfolderBase]: For 5135/5135 co-relation queries the response was YES. [2024-11-22 13:55:26,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 588 events. 297/588 cut-off events. For 5135/5135 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2485 event pairs, 9 based on Foata normal form. 1/589 useless extension candidates. Maximal degree in co-relation 3915. Up to 181 conditions per place. [2024-11-22 13:55:26,572 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 107 selfloop transitions, 60 changer transitions 14/182 dead transitions. [2024-11-22 13:55:26,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 182 transitions, 2938 flow [2024-11-22 13:55:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:55:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:55:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 109 transitions. [2024-11-22 13:55:26,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-11-22 13:55:26,573 INFO L175 Difference]: Start difference. First operand has 200 places, 135 transitions, 2170 flow. Second operand 15 states and 109 transitions. [2024-11-22 13:55:26,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 182 transitions, 2938 flow [2024-11-22 13:55:26,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 182 transitions, 2496 flow, removed 35 selfloop flow, removed 25 redundant places. [2024-11-22 13:55:26,588 INFO L231 Difference]: Finished difference. Result has 164 places, 139 transitions, 2034 flow [2024-11-22 13:55:26,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2034, PETRI_PLACES=164, PETRI_TRANSITIONS=139} [2024-11-22 13:55:26,588 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 140 predicate places. [2024-11-22 13:55:26,589 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 139 transitions, 2034 flow [2024-11-22 13:55:26,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 29 states have internal predecessors, (127), 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) [2024-11-22 13:55:26,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:26,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:26,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-22 13:55:26,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:26,789 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:26,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 633256474, now seen corresponding path program 35 times [2024-11-22 13:55:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947856992] [2024-11-22 13:55:26,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:26,794 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:26,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:55:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947856992] [2024-11-22 13:55:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947856992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846941115] [2024-11-22 13:55:26,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:55:26,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:26,851 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) [2024-11-22 13:55:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-22 13:55:26,882 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 13:55:26,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:26,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 13:55:26,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:55:26,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:55:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846941115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:55:26,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:55:26,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2024-11-22 13:55:26,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098301054] [2024-11-22 13:55:26,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:55:26,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:55:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:26,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:55:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:55:26,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:26,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 139 transitions, 2034 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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) [2024-11-22 13:55:26,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:26,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:26,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:27,041 INFO L124 PetriNetUnfolderBase]: 284/556 cut-off events. [2024-11-22 13:55:27,041 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2024-11-22 13:55:27,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 556 events. 284/556 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2276 event pairs, 22 based on Foata normal form. 4/560 useless extension candidates. Maximal degree in co-relation 3443. Up to 207 conditions per place. [2024-11-22 13:55:27,043 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 33 selfloop transitions, 6 changer transitions 114/154 dead transitions. [2024-11-22 13:55:27,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 2399 flow [2024-11-22 13:55:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:55:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:55:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 67 transitions. [2024-11-22 13:55:27,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-11-22 13:55:27,044 INFO L175 Difference]: Start difference. First operand has 164 places, 139 transitions, 2034 flow. Second operand 9 states and 67 transitions. [2024-11-22 13:55:27,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 2399 flow [2024-11-22 13:55:27,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 154 transitions, 2263 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-22 13:55:27,056 INFO L231 Difference]: Finished difference. Result has 157 places, 38 transitions, 411 flow [2024-11-22 13:55:27,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=411, PETRI_PLACES=157, PETRI_TRANSITIONS=38} [2024-11-22 13:55:27,057 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2024-11-22 13:55:27,057 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 38 transitions, 411 flow [2024-11-22 13:55:27,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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) [2024-11-22 13:55:27,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:27,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:27,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:27,257 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,SelfDestructingSolverStorable63 [2024-11-22 13:55:27,257 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:27,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:27,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1632105574, now seen corresponding path program 36 times [2024-11-22 13:55:27,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:27,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31177720] [2024-11-22 13:55:27,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:27,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:27,262 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:27,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:27,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:27,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31177720] [2024-11-22 13:55:27,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31177720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:27,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293070721] [2024-11-22 13:55:27,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:55:27,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:27,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:27,351 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) [2024-11-22 13:55:27,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-22 13:55:27,382 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 13:55:27,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:27,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:55:27,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:27,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293070721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:27,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:27,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2024-11-22 13:55:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120059185] [2024-11-22 13:55:27,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:27,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 13:55:27,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 13:55:27,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:55:27,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:27,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 38 transitions, 411 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:27,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:27,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:27,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:27,942 INFO L124 PetriNetUnfolderBase]: 71/166 cut-off events. [2024-11-22 13:55:27,942 INFO L125 PetriNetUnfolderBase]: For 954/954 co-relation queries the response was YES. [2024-11-22 13:55:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 166 events. 71/166 cut-off events. For 954/954 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 448 event pairs, 3 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 865. Up to 38 conditions per place. [2024-11-22 13:55:27,943 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 24 selfloop transitions, 11 changer transitions 35/71 dead transitions. [2024-11-22 13:55:27,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 71 transitions, 729 flow [2024-11-22 13:55:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 13:55:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 13:55:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 118 transitions. [2024-11-22 13:55:27,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2822966507177033 [2024-11-22 13:55:27,944 INFO L175 Difference]: Start difference. First operand has 157 places, 38 transitions, 411 flow. Second operand 19 states and 118 transitions. [2024-11-22 13:55:27,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 71 transitions, 729 flow [2024-11-22 13:55:27,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 71 transitions, 470 flow, removed 31 selfloop flow, removed 45 redundant places. [2024-11-22 13:55:27,946 INFO L231 Difference]: Finished difference. Result has 94 places, 29 transitions, 199 flow [2024-11-22 13:55:27,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=199, PETRI_PLACES=94, PETRI_TRANSITIONS=29} [2024-11-22 13:55:27,947 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-11-22 13:55:27,947 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 29 transitions, 199 flow [2024-11-22 13:55:27,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:55:27,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:27,947 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:27,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:28,147 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,SelfDestructingSolverStorable64 [2024-11-22 13:55:28,148 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:28,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 661341739, now seen corresponding path program 37 times [2024-11-22 13:55:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:28,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377248455] [2024-11-22 13:55:28,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:28,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377248455] [2024-11-22 13:55:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377248455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448121034] [2024-11-22 13:55:28,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:55:28,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:28,201 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) [2024-11-22 13:55:28,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-22 13:55:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:55:28,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:55:28,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:28,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448121034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:28,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-22 13:55:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691735464] [2024-11-22 13:55:28,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:28,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:55:28,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:55:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:55:28,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-22 13:55:28,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 29 transitions, 199 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) [2024-11-22 13:55:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-22 13:55:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:28,371 INFO L124 PetriNetUnfolderBase]: 36/92 cut-off events. [2024-11-22 13:55:28,371 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2024-11-22 13:55:28,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 92 events. 36/92 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 3 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 375. Up to 43 conditions per place. [2024-11-22 13:55:28,372 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 30 selfloop transitions, 11 changer transitions 1/45 dead transitions. [2024-11-22 13:55:28,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 45 transitions, 343 flow [2024-11-22 13:55:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:55:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:55:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-22 13:55:28,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-22 13:55:28,373 INFO L175 Difference]: Start difference. First operand has 94 places, 29 transitions, 199 flow. Second operand 9 states and 84 transitions. [2024-11-22 13:55:28,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 45 transitions, 343 flow [2024-11-22 13:55:28,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 45 transitions, 282 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-11-22 13:55:28,374 INFO L231 Difference]: Finished difference. Result has 71 places, 30 transitions, 179 flow [2024-11-22 13:55:28,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=71, PETRI_TRANSITIONS=30} [2024-11-22 13:55:28,374 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2024-11-22 13:55:28,374 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 30 transitions, 179 flow [2024-11-22 13:55:28,374 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) [2024-11-22 13:55:28,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:55:28,374 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:55:28,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:28,575 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,SelfDestructingSolverStorable65 [2024-11-22 13:55:28,575 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:55:28,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:55:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -778173889, now seen corresponding path program 38 times [2024-11-22 13:55:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:55:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863982929] [2024-11-22 13:55:28,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:55:28,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:28,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:55:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863982929] [2024-11-22 13:55:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863982929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:55:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984436108] [2024-11-22 13:55:28,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:55:28,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:55:28,733 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) [2024-11-22 13:55:28,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-22 13:55:28,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:55:28,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:55:28,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 13:55:28,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:55:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:28,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:55:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:55:29,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984436108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:55:29,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:55:29,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-11-22 13:55:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194856940] [2024-11-22 13:55:29,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:55:29,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 13:55:29,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:55:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 13:55:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 13:55:29,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-22 13:55:29,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 30 transitions, 179 flow. Second operand has 33 states, 33 states have (on average 4.2727272727272725) internal successors, (141), 33 states have internal predecessors, (141), 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) [2024-11-22 13:55:29,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:55:29,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-22 13:55:29,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:55:29,526 INFO L124 PetriNetUnfolderBase]: 41/97 cut-off events. [2024-11-22 13:55:29,526 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-22 13:55:29,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 97 events. 41/97 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 379. Up to 21 conditions per place. [2024-11-22 13:55:29,527 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2024-11-22 13:55:29,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 50 transitions, 336 flow [2024-11-22 13:55:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:55:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 13:55:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 95 transitions. [2024-11-22 13:55:29,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26988636363636365 [2024-11-22 13:55:29,527 INFO L175 Difference]: Start difference. First operand has 71 places, 30 transitions, 179 flow. Second operand 16 states and 95 transitions. [2024-11-22 13:55:29,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 50 transitions, 336 flow [2024-11-22 13:55:29,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 50 transitions, 321 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:55:29,529 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2024-11-22 13:55:29,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2024-11-22 13:55:29,529 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-11-22 13:55:29,529 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2024-11-22 13:55:29,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.2727272727272725) internal successors, (141), 33 states have internal predecessors, (141), 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) [2024-11-22 13:55:29,532 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-22 13:55:29,533 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-22 13:55:29,533 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-22 13:55:29,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-22 13:55:29,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:55:29,734 INFO L407 BasicCegarLoop]: Path program histogram: [38, 17, 6, 6] [2024-11-22 13:55:29,737 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:55:29,737 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:55:29,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:55:29 BasicIcfg [2024-11-22 13:55:29,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:55:29,741 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:55:29,741 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:55:29,741 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:55:29,741 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:35" (3/4) ... [2024-11-22 13:55:29,745 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:55:29,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-22 13:55:29,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-22 13:55:29,752 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-22 13:55:29,754 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-22 13:55:29,754 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-22 13:55:29,754 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-22 13:55:29,848 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:55:29,848 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:55:29,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:55:29,849 INFO L158 Benchmark]: Toolchain (without parser) took 55444.95ms. Allocated memory was 130.0MB in the beginning and 541.1MB in the end (delta: 411.0MB). Free memory was 58.3MB in the beginning and 283.3MB in the end (delta: -225.0MB). Peak memory consumption was 186.7MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,850 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:55:29,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.57ms. Allocated memory is still 130.0MB. Free memory was 58.0MB in the beginning and 101.9MB in the end (delta: -43.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.16ms. Allocated memory is still 130.0MB. Free memory was 101.2MB in the beginning and 99.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,851 INFO L158 Benchmark]: Boogie Preprocessor took 32.97ms. Allocated memory is still 130.0MB. Free memory was 99.8MB in the beginning and 98.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,851 INFO L158 Benchmark]: RCFGBuilder took 393.24ms. Allocated memory is still 130.0MB. Free memory was 98.3MB in the beginning and 79.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,852 INFO L158 Benchmark]: TraceAbstraction took 54547.67ms. Allocated memory was 130.0MB in the beginning and 541.1MB in the end (delta: 411.0MB). Free memory was 78.8MB in the beginning and 287.5MB in the end (delta: -208.7MB). Peak memory consumption was 203.6MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,854 INFO L158 Benchmark]: Witness Printer took 107.77ms. Allocated memory is still 541.1MB. Free memory was 287.5MB in the beginning and 283.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:55:29,856 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.57ms. Allocated memory is still 130.0MB. Free memory was 58.0MB in the beginning and 101.9MB in the end (delta: -43.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.16ms. Allocated memory is still 130.0MB. Free memory was 101.2MB in the beginning and 99.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.97ms. Allocated memory is still 130.0MB. Free memory was 99.8MB in the beginning and 98.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 393.24ms. Allocated memory is still 130.0MB. Free memory was 98.3MB in the beginning and 79.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 54547.67ms. Allocated memory was 130.0MB in the beginning and 541.1MB in the end (delta: 411.0MB). Free memory was 78.8MB in the beginning and 287.5MB in the end (delta: -208.7MB). Peak memory consumption was 203.6MB. Max. memory is 16.1GB. * Witness Printer took 107.77ms. Allocated memory is still 541.1MB. Free memory was 287.5MB in the beginning and 283.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 54.5s, OverallIterations: 67, TraceHistogramMax: 3, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3859 SdHoareTripleChecker+Valid, 11.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3807 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24889 IncrementalHoareTripleChecker+Invalid, 25780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 891 mSolverCounterUnsat, 20 mSDtfsCounter, 24889 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2557 GetRequests, 1163 SyntacticMatches, 12 SemanticMatches, 1382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10168 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6869occurred in iteration=36, InterpolantAutomatonStates: 886, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 2053 NumberOfCodeBlocks, 2051 NumberOfCodeBlocksAsserted, 201 NumberOfCheckSat, 2648 ConstructedInterpolants, 0 QuantifiedInterpolants, 15210 SizeOfPredicates, 139 NumberOfNonLiveVariables, 4040 ConjunctsInSsa, 533 ConjunctsInUnsatCore, 146 InterpolantComputations, 31 PerfectInterpolantSequences, 79/393 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:55:29,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE