./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 b01ecc2cec2d3b25790e2e1261ee2a51c1fc74f823e2e108c953a6bc27a2446d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:56:38,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:56:38,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:56:38,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:56:38,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:56:38,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:56:38,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:56:38,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:56:38,701 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:56:38,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:56:38,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:56:38,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:56:38,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:56:38,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:56:38,705 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:56:38,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:56:38,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:56:38,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:56:38,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:56:38,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:56:38,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:56:38,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:56:38,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:56:38,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:56:38,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:56:38,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:56:38,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:56:38,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:56:38,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:56:38,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:56:38,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:56:38,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:56:38,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:56:38,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:56:38,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:56:38,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:56:38,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:56:38,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:56:38,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:56:38,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:56:38,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:56:38,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:56:38,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b01ecc2cec2d3b25790e2e1261ee2a51c1fc74f823e2e108c953a6bc27a2446d [2024-10-24 01:56:39,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:56:39,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:56:39,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:56:39,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:56:39,035 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:56:39,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:56:40,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:56:40,797 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:56:40,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:56:40,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c740a9bb/f352a168069542be98075bc0b1ca2d57/FLAGfdf5e6700 [2024-10-24 01:56:40,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c740a9bb/f352a168069542be98075bc0b1ca2d57 [2024-10-24 01:56:40,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:56:40,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:56:40,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:56:40,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:56:40,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:56:40,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:56:40" (1/1) ... [2024-10-24 01:56:40,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d405912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:40, skipping insertion in model container [2024-10-24 01:56:40,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:56:40" (1/1) ... [2024-10-24 01:56:40,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:56:41,287 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2024-10-24 01:56:41,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:56:41,385 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:56:41,498 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2024-10-24 01:56:41,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:56:41,598 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:56:41,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41 WrapperNode [2024-10-24 01:56:41,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:56:41,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:56:41,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:56:41,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:56:41,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,688 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1451 [2024-10-24 01:56:41,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:56:41,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:56:41,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:56:41,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:56:41,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,751 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 01:56:41,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:56:41,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:56:41,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:56:41,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:56:41,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (1/1) ... [2024-10-24 01:56:41,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:56:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:56:41,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:56:41,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:56:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:56:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:56:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:56:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:56:42,100 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:56:42,102 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:56:43,422 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-24 01:56:43,422 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:56:43,509 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:56:43,510 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:56:43,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:56:43 BoogieIcfgContainer [2024-10-24 01:56:43,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:56:43,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:56:43,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:56:43,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:56:43,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:56:40" (1/3) ... [2024-10-24 01:56:43,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f4b9dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:56:43, skipping insertion in model container [2024-10-24 01:56:43,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:56:41" (2/3) ... [2024-10-24 01:56:43,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f4b9dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:56:43, skipping insertion in model container [2024-10-24 01:56:43,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:56:43" (3/3) ... [2024-10-24 01:56:43,519 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:56:43,536 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:56:43,537 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:56:43,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:56:43,636 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;@1ff0ad6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:56:43,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:56:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 346 states have (on average 1.7919075144508672) internal successors, (620), 347 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-24 01:56:43,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:43,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:43,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:43,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:43,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1104503108, now seen corresponding path program 1 times [2024-10-24 01:56:43,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:43,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422377526] [2024-10-24 01:56:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:44,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422377526] [2024-10-24 01:56:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422377526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:44,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:44,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473569367] [2024-10-24 01:56:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:44,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:44,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:44,446 INFO L87 Difference]: Start difference. First operand has 348 states, 346 states have (on average 1.7919075144508672) internal successors, (620), 347 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:44,585 INFO L93 Difference]: Finished difference Result 648 states and 1120 transitions. [2024-10-24 01:56:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-10-24 01:56:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:44,604 INFO L225 Difference]: With dead ends: 648 [2024-10-24 01:56:44,604 INFO L226 Difference]: Without dead ends: 488 [2024-10-24 01:56:44,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:44,612 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 265 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:44,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:56:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-10-24 01:56:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2024-10-24 01:56:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.6528925619834711) internal successors, (800), 484 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 800 transitions. [2024-10-24 01:56:44,712 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 800 transitions. Word has length 117 [2024-10-24 01:56:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:44,713 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 800 transitions. [2024-10-24 01:56:44,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 800 transitions. [2024-10-24 01:56:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-24 01:56:44,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:44,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:44,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:56:44,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:44,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1038605622, now seen corresponding path program 1 times [2024-10-24 01:56:44,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:44,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124157029] [2024-10-24 01:56:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:44,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124157029] [2024-10-24 01:56:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124157029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:45,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606001066] [2024-10-24 01:56:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:45,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:45,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,074 INFO L87 Difference]: Start difference. First operand 485 states and 800 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:45,129 INFO L93 Difference]: Finished difference Result 1051 states and 1740 transitions. [2024-10-24 01:56:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-24 01:56:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:45,139 INFO L225 Difference]: With dead ends: 1051 [2024-10-24 01:56:45,139 INFO L226 Difference]: Without dead ends: 758 [2024-10-24 01:56:45,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,142 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 229 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:45,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1094 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-10-24 01:56:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2024-10-24 01:56:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.653386454183267) internal successors, (1245), 753 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1245 transitions. [2024-10-24 01:56:45,186 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1245 transitions. Word has length 120 [2024-10-24 01:56:45,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:45,191 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1245 transitions. [2024-10-24 01:56:45,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1245 transitions. [2024-10-24 01:56:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-24 01:56:45,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:45,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:45,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:56:45,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:45,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1045683377, now seen corresponding path program 1 times [2024-10-24 01:56:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696519308] [2024-10-24 01:56:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:45,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696519308] [2024-10-24 01:56:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696519308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:45,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:45,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574074660] [2024-10-24 01:56:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,422 INFO L87 Difference]: Start difference. First operand 754 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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) [2024-10-24 01:56:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:45,475 INFO L93 Difference]: Finished difference Result 1838 states and 3039 transitions. [2024-10-24 01:56:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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) Word has length 123 [2024-10-24 01:56:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:45,484 INFO L225 Difference]: With dead ends: 1838 [2024-10-24 01:56:45,485 INFO L226 Difference]: Without dead ends: 1276 [2024-10-24 01:56:45,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,488 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 222 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:45,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1095 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2024-10-24 01:56:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1270. [2024-10-24 01:56:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 1.649330181245075) internal successors, (2093), 1269 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 2093 transitions. [2024-10-24 01:56:45,528 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 2093 transitions. Word has length 123 [2024-10-24 01:56:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:45,530 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 2093 transitions. [2024-10-24 01:56:45,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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) [2024-10-24 01:56:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 2093 transitions. [2024-10-24 01:56:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-24 01:56:45,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:45,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:45,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:56:45,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:45,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:45,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1670401211, now seen corresponding path program 1 times [2024-10-24 01:56:45,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106367571] [2024-10-24 01:56:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:45,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106367571] [2024-10-24 01:56:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106367571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104759224] [2024-10-24 01:56:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,794 INFO L87 Difference]: Start difference. First operand 1270 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 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) [2024-10-24 01:56:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:45,850 INFO L93 Difference]: Finished difference Result 3346 states and 5511 transitions. [2024-10-24 01:56:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 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) Word has length 126 [2024-10-24 01:56:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:45,862 INFO L225 Difference]: With dead ends: 3346 [2024-10-24 01:56:45,862 INFO L226 Difference]: Without dead ends: 2268 [2024-10-24 01:56:45,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:45,866 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 215 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:45,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1096 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2024-10-24 01:56:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2258. [2024-10-24 01:56:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2257 states have (on average 1.6415595923792645) internal successors, (3705), 2257 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 3705 transitions. [2024-10-24 01:56:45,926 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 3705 transitions. Word has length 126 [2024-10-24 01:56:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 2258 states and 3705 transitions. [2024-10-24 01:56:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 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) [2024-10-24 01:56:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 3705 transitions. [2024-10-24 01:56:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-24 01:56:45,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:45,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:45,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:56:45,931 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:45,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1229327834, now seen corresponding path program 1 times [2024-10-24 01:56:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:45,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283492587] [2024-10-24 01:56:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283492587] [2024-10-24 01:56:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283492587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:56:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519332833] [2024-10-24 01:56:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:46,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:56:46,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:56:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:56:46,253 INFO L87 Difference]: Start difference. First operand 2258 states and 3705 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:46,609 INFO L93 Difference]: Finished difference Result 11838 states and 19569 transitions. [2024-10-24 01:56:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:56:46,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2024-10-24 01:56:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:46,644 INFO L225 Difference]: With dead ends: 11838 [2024-10-24 01:56:46,645 INFO L226 Difference]: Without dead ends: 9772 [2024-10-24 01:56:46,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:56:46,651 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 2145 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:46,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 4847 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:56:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9772 states. [2024-10-24 01:56:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9772 to 4188. [2024-10-24 01:56:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 1.6412705994745642) internal successors, (6872), 4187 states have internal predecessors, (6872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 6872 transitions. [2024-10-24 01:56:46,782 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 6872 transitions. Word has length 129 [2024-10-24 01:56:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:46,783 INFO L471 AbstractCegarLoop]: Abstraction has 4188 states and 6872 transitions. [2024-10-24 01:56:46,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 6872 transitions. [2024-10-24 01:56:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-24 01:56:46,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:46,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:46,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:56:46,787 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:46,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 478480816, now seen corresponding path program 1 times [2024-10-24 01:56:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:46,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487501638] [2024-10-24 01:56:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487501638] [2024-10-24 01:56:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487501638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:46,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:46,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:56:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610529475] [2024-10-24 01:56:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:46,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:56:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:56:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:56:46,982 INFO L87 Difference]: Start difference. First operand 4188 states and 6872 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:47,112 INFO L93 Difference]: Finished difference Result 12286 states and 20260 transitions. [2024-10-24 01:56:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:56:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-10-24 01:56:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:47,144 INFO L225 Difference]: With dead ends: 12286 [2024-10-24 01:56:47,145 INFO L226 Difference]: Without dead ends: 8290 [2024-10-24 01:56:47,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:56:47,154 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 754 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:47,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1893 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:56:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2024-10-24 01:56:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 6222. [2024-10-24 01:56:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 1.6436264266195146) internal successors, (10225), 6221 states have internal predecessors, (10225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 10225 transitions. [2024-10-24 01:56:47,315 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 10225 transitions. Word has length 130 [2024-10-24 01:56:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:47,316 INFO L471 AbstractCegarLoop]: Abstraction has 6222 states and 10225 transitions. [2024-10-24 01:56:47,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 10225 transitions. [2024-10-24 01:56:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 01:56:47,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:47,322 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:47,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:56:47,322 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:47,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1885499437, now seen corresponding path program 1 times [2024-10-24 01:56:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:47,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461610626] [2024-10-24 01:56:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:47,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:47,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461610626] [2024-10-24 01:56:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461610626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:56:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792150375] [2024-10-24 01:56:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:47,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:56:47,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:56:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:56:47,522 INFO L87 Difference]: Start difference. First operand 6222 states and 10225 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:47,670 INFO L93 Difference]: Finished difference Result 18284 states and 30120 transitions. [2024-10-24 01:56:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:56:47,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-10-24 01:56:47,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:47,713 INFO L225 Difference]: With dead ends: 18284 [2024-10-24 01:56:47,714 INFO L226 Difference]: Without dead ends: 12254 [2024-10-24 01:56:47,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:56:47,729 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 752 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:47,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1772 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:56:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2024-10-24 01:56:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 9214. [2024-10-24 01:56:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9214 states, 9213 states have (on average 1.6419190274611961) internal successors, (15127), 9213 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9214 states to 9214 states and 15127 transitions. [2024-10-24 01:56:47,997 INFO L78 Accepts]: Start accepts. Automaton has 9214 states and 15127 transitions. Word has length 131 [2024-10-24 01:56:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:47,997 INFO L471 AbstractCegarLoop]: Abstraction has 9214 states and 15127 transitions. [2024-10-24 01:56:47,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9214 states and 15127 transitions. [2024-10-24 01:56:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-24 01:56:48,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:48,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:48,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:56:48,003 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:48,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1737005545, now seen corresponding path program 1 times [2024-10-24 01:56:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241809854] [2024-10-24 01:56:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:48,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241809854] [2024-10-24 01:56:48,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241809854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:48,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:56:48,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359155438] [2024-10-24 01:56:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:48,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:56:48,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:48,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:56:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:56:48,192 INFO L87 Difference]: Start difference. First operand 9214 states and 15127 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:48,362 INFO L93 Difference]: Finished difference Result 27108 states and 44608 transitions. [2024-10-24 01:56:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:56:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-10-24 01:56:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:48,502 INFO L225 Difference]: With dead ends: 27108 [2024-10-24 01:56:48,502 INFO L226 Difference]: Without dead ends: 18086 [2024-10-24 01:56:48,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:56:48,521 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 750 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:48,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1894 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:56:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18086 states. [2024-10-24 01:56:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18086 to 13616. [2024-10-24 01:56:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13616 states, 13615 states have (on average 1.6401762761659935) internal successors, (22331), 13615 states have internal predecessors, (22331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13616 states to 13616 states and 22331 transitions. [2024-10-24 01:56:48,837 INFO L78 Accepts]: Start accepts. Automaton has 13616 states and 22331 transitions. Word has length 132 [2024-10-24 01:56:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:48,838 INFO L471 AbstractCegarLoop]: Abstraction has 13616 states and 22331 transitions. [2024-10-24 01:56:48,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13616 states and 22331 transitions. [2024-10-24 01:56:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 01:56:48,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:48,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:48,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:56:48,844 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:48,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash -463645793, now seen corresponding path program 1 times [2024-10-24 01:56:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099828119] [2024-10-24 01:56:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099828119] [2024-10-24 01:56:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099828119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249829157] [2024-10-24 01:56:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:48,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:48,978 INFO L87 Difference]: Start difference. First operand 13616 states and 22331 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:49,174 INFO L93 Difference]: Finished difference Result 30204 states and 49578 transitions. [2024-10-24 01:56:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:49,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-10-24 01:56:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:49,218 INFO L225 Difference]: With dead ends: 30204 [2024-10-24 01:56:49,218 INFO L226 Difference]: Without dead ends: 20858 [2024-10-24 01:56:49,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:49,240 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 228 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:49,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1241 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20858 states. [2024-10-24 01:56:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20858 to 20856. [2024-10-24 01:56:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20856 states, 20855 states have (on average 1.6355789978422441) internal successors, (34110), 20855 states have internal predecessors, (34110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20856 states to 20856 states and 34110 transitions. [2024-10-24 01:56:49,701 INFO L78 Accepts]: Start accepts. Automaton has 20856 states and 34110 transitions. Word has length 133 [2024-10-24 01:56:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:49,703 INFO L471 AbstractCegarLoop]: Abstraction has 20856 states and 34110 transitions. [2024-10-24 01:56:49,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20856 states and 34110 transitions. [2024-10-24 01:56:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 01:56:49,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:49,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:49,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:56:49,706 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:49,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1410705485, now seen corresponding path program 1 times [2024-10-24 01:56:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:49,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732806085] [2024-10-24 01:56:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732806085] [2024-10-24 01:56:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732806085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:49,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312693356] [2024-10-24 01:56:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:49,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:49,856 INFO L87 Difference]: Start difference. First operand 20856 states and 34110 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:50,148 INFO L93 Difference]: Finished difference Result 46074 states and 75424 transitions. [2024-10-24 01:56:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-10-24 01:56:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:50,242 INFO L225 Difference]: With dead ends: 46074 [2024-10-24 01:56:50,242 INFO L226 Difference]: Without dead ends: 31710 [2024-10-24 01:56:50,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:50,268 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 221 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:50,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31710 states. [2024-10-24 01:56:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31710 to 31708. [2024-10-24 01:56:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31708 states, 31707 states have (on average 1.6303024568707225) internal successors, (51692), 31707 states have internal predecessors, (51692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31708 states to 31708 states and 51692 transitions. [2024-10-24 01:56:51,069 INFO L78 Accepts]: Start accepts. Automaton has 31708 states and 51692 transitions. Word has length 133 [2024-10-24 01:56:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:51,070 INFO L471 AbstractCegarLoop]: Abstraction has 31708 states and 51692 transitions. [2024-10-24 01:56:51,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 31708 states and 51692 transitions. [2024-10-24 01:56:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 01:56:51,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:51,072 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:51,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:56:51,073 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:51,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash -641806061, now seen corresponding path program 1 times [2024-10-24 01:56:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:51,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165138555] [2024-10-24 01:56:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165138555] [2024-10-24 01:56:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165138555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:51,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:51,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152095588] [2024-10-24 01:56:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:51,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:51,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:51,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:51,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:51,201 INFO L87 Difference]: Start difference. First operand 31708 states and 51692 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:51,541 INFO L93 Difference]: Finished difference Result 61884 states and 101018 transitions. [2024-10-24 01:56:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:51,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-10-24 01:56:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:51,631 INFO L225 Difference]: With dead ends: 61884 [2024-10-24 01:56:51,632 INFO L226 Difference]: Without dead ends: 44438 [2024-10-24 01:56:51,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:51,673 INFO L432 NwaCegarLoop]: 648 mSDtfsCounter, 214 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:51,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44438 states. [2024-10-24 01:56:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44438 to 44436. [2024-10-24 01:56:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44436 states, 44435 states have (on average 1.6252503657027118) internal successors, (72218), 44435 states have internal predecessors, (72218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44436 states to 44436 states and 72218 transitions. [2024-10-24 01:56:52,529 INFO L78 Accepts]: Start accepts. Automaton has 44436 states and 72218 transitions. Word has length 133 [2024-10-24 01:56:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:52,530 INFO L471 AbstractCegarLoop]: Abstraction has 44436 states and 72218 transitions. [2024-10-24 01:56:52,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 44436 states and 72218 transitions. [2024-10-24 01:56:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 01:56:52,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:52,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:52,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:56:52,533 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:52,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:52,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1934015028, now seen corresponding path program 1 times [2024-10-24 01:56:52,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:52,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502096212] [2024-10-24 01:56:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:52,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:52,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502096212] [2024-10-24 01:56:52,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502096212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:52,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:56:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584491068] [2024-10-24 01:56:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:52,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:56:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:52,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:56:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:56:52,978 INFO L87 Difference]: Start difference. First operand 44436 states and 72218 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:53,538 INFO L93 Difference]: Finished difference Result 141592 states and 230509 transitions. [2024-10-24 01:56:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:56:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-10-24 01:56:53,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:53,950 INFO L225 Difference]: With dead ends: 141592 [2024-10-24 01:56:53,950 INFO L226 Difference]: Without dead ends: 97568 [2024-10-24 01:56:54,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:56:54,006 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 748 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:54,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1896 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:56:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97568 states. [2024-10-24 01:56:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97568 to 70868. [2024-10-24 01:56:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70868 states, 70867 states have (on average 1.6216010272764474) internal successors, (114918), 70867 states have internal predecessors, (114918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70868 states to 70868 states and 114918 transitions. [2024-10-24 01:56:55,766 INFO L78 Accepts]: Start accepts. Automaton has 70868 states and 114918 transitions. Word has length 133 [2024-10-24 01:56:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:55,766 INFO L471 AbstractCegarLoop]: Abstraction has 70868 states and 114918 transitions. [2024-10-24 01:56:55,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 70868 states and 114918 transitions. [2024-10-24 01:56:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 01:56:55,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:55,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:55,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:56:55,770 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1335786477, now seen corresponding path program 1 times [2024-10-24 01:56:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:55,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451915005] [2024-10-24 01:56:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:55,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:55,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451915005] [2024-10-24 01:56:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451915005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:56:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836456826] [2024-10-24 01:56:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:55,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:56:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:56:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:55,893 INFO L87 Difference]: Start difference. First operand 70868 states and 114918 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:56,705 INFO L93 Difference]: Finished difference Result 156081 states and 254328 transitions. [2024-10-24 01:56:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-10-24 01:56:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:56,911 INFO L225 Difference]: With dead ends: 156081 [2024-10-24 01:56:56,912 INFO L226 Difference]: Without dead ends: 105866 [2024-10-24 01:56:56,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:56:56,961 INFO L432 NwaCegarLoop]: 762 mSDtfsCounter, 235 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:56,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105866 states. [2024-10-24 01:56:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105866 to 105864. [2024-10-24 01:56:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105864 states, 105863 states have (on average 1.618771431000444) internal successors, (171368), 105863 states have internal predecessors, (171368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105864 states to 105864 states and 171368 transitions. [2024-10-24 01:56:58,837 INFO L78 Accepts]: Start accepts. Automaton has 105864 states and 171368 transitions. Word has length 133 [2024-10-24 01:56:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:58,838 INFO L471 AbstractCegarLoop]: Abstraction has 105864 states and 171368 transitions. [2024-10-24 01:56:58,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 105864 states and 171368 transitions. [2024-10-24 01:56:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-24 01:56:58,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:58,841 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:56:58,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:56:58,841 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:58,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1645265701, now seen corresponding path program 1 times [2024-10-24 01:56:58,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:58,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490678994] [2024-10-24 01:56:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:56:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:56:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:56:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:56:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490678994] [2024-10-24 01:56:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490678994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:56:59,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:56:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:56:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142678366] [2024-10-24 01:56:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:56:59,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:56:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:56:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:56:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:56:59,204 INFO L87 Difference]: Start difference. First operand 105864 states and 171368 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:57:00,314 INFO L93 Difference]: Finished difference Result 211470 states and 342321 transitions. [2024-10-24 01:57:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:57:00,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-24 01:57:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:57:00,486 INFO L225 Difference]: With dead ends: 211470 [2024-10-24 01:57:00,486 INFO L226 Difference]: Without dead ends: 105866 [2024-10-24 01:57:00,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:57:00,563 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 654 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:57:00,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 2172 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:57:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105866 states. [2024-10-24 01:57:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105866 to 105864. [2024-10-24 01:57:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105864 states, 105863 states have (on average 1.612867574128827) internal successors, (170743), 105863 states have internal predecessors, (170743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105864 states to 105864 states and 170743 transitions. [2024-10-24 01:57:02,587 INFO L78 Accepts]: Start accepts. Automaton has 105864 states and 170743 transitions. Word has length 135 [2024-10-24 01:57:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:57:02,587 INFO L471 AbstractCegarLoop]: Abstraction has 105864 states and 170743 transitions. [2024-10-24 01:57:02,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 105864 states and 170743 transitions. [2024-10-24 01:57:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-24 01:57:02,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:57:02,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:57:02,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:57:02,590 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:57:02,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:57:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2104616215, now seen corresponding path program 1 times [2024-10-24 01:57:02,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:57:02,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515347151] [2024-10-24 01:57:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:57:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:57:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:57:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:57:03,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:57:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515347151] [2024-10-24 01:57:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515347151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:57:03,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:57:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:57:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313529066] [2024-10-24 01:57:03,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:57:03,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:57:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:57:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:57:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:57:03,085 INFO L87 Difference]: Start difference. First operand 105864 states and 170743 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:57:04,769 INFO L93 Difference]: Finished difference Result 309468 states and 499581 transitions. [2024-10-24 01:57:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:57:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-10-24 01:57:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:57:05,142 INFO L225 Difference]: With dead ends: 309468 [2024-10-24 01:57:05,142 INFO L226 Difference]: Without dead ends: 203864 [2024-10-24 01:57:05,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:57:05,212 INFO L432 NwaCegarLoop]: 558 mSDtfsCounter, 863 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:57:05,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2181 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:57:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203864 states. [2024-10-24 01:57:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203864 to 203862. [2024-10-24 01:57:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203862 states, 203861 states have (on average 1.6051917728256018) internal successors, (327236), 203861 states have internal predecessors, (327236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203862 states to 203862 states and 327236 transitions. [2024-10-24 01:57:08,894 INFO L78 Accepts]: Start accepts. Automaton has 203862 states and 327236 transitions. Word has length 138 [2024-10-24 01:57:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:57:08,895 INFO L471 AbstractCegarLoop]: Abstraction has 203862 states and 327236 transitions. [2024-10-24 01:57:08,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 203862 states and 327236 transitions. [2024-10-24 01:57:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-24 01:57:08,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:57:08,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:57:08,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:57:08,897 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:57:08,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:57:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash -820502302, now seen corresponding path program 1 times [2024-10-24 01:57:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:57:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181440074] [2024-10-24 01:57:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:57:08,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:57:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:57:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:57:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:57:09,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181440074] [2024-10-24 01:57:09,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181440074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:57:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:57:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:57:09,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240556557] [2024-10-24 01:57:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:57:09,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:57:09,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:57:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:57:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:57:09,921 INFO L87 Difference]: Start difference. First operand 203862 states and 327236 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:57:10,680 INFO L93 Difference]: Finished difference Result 207736 states and 333045 transitions. [2024-10-24 01:57:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:57:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-10-24 01:57:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:57:11,065 INFO L225 Difference]: With dead ends: 207736 [2024-10-24 01:57:11,065 INFO L226 Difference]: Without dead ends: 207734 [2024-10-24 01:57:11,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:57:11,144 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 0 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:57:11,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2254 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:57:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207734 states. [2024-10-24 01:57:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207734 to 207734. [2024-10-24 01:57:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207734 states, 207733 states have (on average 1.5937814405992308) internal successors, (331081), 207733 states have internal predecessors, (331081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207734 states to 207734 states and 331081 transitions. [2024-10-24 01:57:14,910 INFO L78 Accepts]: Start accepts. Automaton has 207734 states and 331081 transitions. Word has length 139 [2024-10-24 01:57:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:57:14,910 INFO L471 AbstractCegarLoop]: Abstraction has 207734 states and 331081 transitions. [2024-10-24 01:57:14,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 207734 states and 331081 transitions. [2024-10-24 01:57:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-24 01:57:14,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:57:14,916 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:57:14,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:57:14,916 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:57:14,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:57:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1542140681, now seen corresponding path program 1 times [2024-10-24 01:57:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:57:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587812838] [2024-10-24 01:57:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:57:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:57:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:57:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:57:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:57:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587812838] [2024-10-24 01:57:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587812838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:57:15,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:57:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:57:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308169431] [2024-10-24 01:57:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:57:15,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:57:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:57:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:57:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:57:15,173 INFO L87 Difference]: Start difference. First operand 207734 states and 331081 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:57:17,658 INFO L93 Difference]: Finished difference Result 565656 states and 903742 transitions. [2024-10-24 01:57:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:57:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-10-24 01:57:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:57:18,772 INFO L225 Difference]: With dead ends: 565656 [2024-10-24 01:57:18,773 INFO L226 Difference]: Without dead ends: 474404 [2024-10-24 01:57:18,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:57:18,985 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 1501 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:57:18,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 3484 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:57:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474404 states. [2024-10-24 01:57:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474404 to 333614. [2024-10-24 01:57:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333614 states, 333613 states have (on average 1.592249103002581) internal successors, (531195), 333613 states have internal predecessors, (531195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333614 states to 333614 states and 531195 transitions. [2024-10-24 01:57:26,541 INFO L78 Accepts]: Start accepts. Automaton has 333614 states and 531195 transitions. Word has length 175 [2024-10-24 01:57:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:57:26,541 INFO L471 AbstractCegarLoop]: Abstraction has 333614 states and 531195 transitions. [2024-10-24 01:57:26,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 333614 states and 531195 transitions. [2024-10-24 01:57:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-24 01:57:26,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:57:26,548 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:57:26,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:57:26,549 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:57:26,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:57:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1805766923, now seen corresponding path program 1 times [2024-10-24 01:57:26,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:57:26,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123259674] [2024-10-24 01:57:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:57:26,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:57:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:57:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 01:57:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:57:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123259674] [2024-10-24 01:57:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123259674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:57:26,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:57:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:57:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365889389] [2024-10-24 01:57:26,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:57:26,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:57:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:57:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:57:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:57:26,922 INFO L87 Difference]: Start difference. First operand 333614 states and 531195 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:57:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:57:29,602 INFO L93 Difference]: Finished difference Result 623672 states and 996666 transitions. [2024-10-24 01:57:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:57:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-10-24 01:57:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:57:30,762 INFO L225 Difference]: With dead ends: 623672 [2024-10-24 01:57:30,762 INFO L226 Difference]: Without dead ends: 532420 [2024-10-24 01:57:30,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:57:30,972 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 1611 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:57:30,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 3001 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:57:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532420 states.