./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.3.ufo.BOUNDED-6.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.3.ufo.BOUNDED-6.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 7d2af023f2b46f9741f5603972bec3ae96ac7b65fd15f9e50fc1e49148c9ae7b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:55:12,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:55:12,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:55:12,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:55:12,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:55:12,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:55:12,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:55:12,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:55:12,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:55:12,521 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:55:12,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:55:12,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:55:12,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:55:12,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:55:12,525 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:55:12,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:55:12,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:55:12,526 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:55:12,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:55:12,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:55:12,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:55:12,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:55:12,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:55:12,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:55:12,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:55:12,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:55:12,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:55:12,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:55:12,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:55:12,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:55:12,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:55:12,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:55:12,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:55:12,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:55:12,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:55:12,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:55:12,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:55:12,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:55:12,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:55:12,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:55:12,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:55:12,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:55:12,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d2af023f2b46f9741f5603972bec3ae96ac7b65fd15f9e50fc1e49148c9ae7b [2024-10-24 01:55:12,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:55:12,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:55:12,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:55:12,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:55:12,876 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:55:12,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:55:14,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:55:14,688 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:55:14,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:55:14,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c297eacf2/aa168401cc634db4bfc3e0f86ab5a00f/FLAGa5e45a3d8 [2024-10-24 01:55:14,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c297eacf2/aa168401cc634db4bfc3e0f86ab5a00f [2024-10-24 01:55:14,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:55:14,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:55:14,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:55:14,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:55:14,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:55:14,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:55:14" (1/1) ... [2024-10-24 01:55:14,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e89929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:14, skipping insertion in model container [2024-10-24 01:55:14,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:55:14" (1/1) ... [2024-10-24 01:55:14,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:55:15,022 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7804,7817] [2024-10-24 01:55:15,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:55:15,099 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:55:15,218 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7804,7817] [2024-10-24 01:55:15,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:55:15,270 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:55:15,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15 WrapperNode [2024-10-24 01:55:15,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:55:15,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:55:15,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:55:15,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:55:15,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,345 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-10-24 01:55:15,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:55:15,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:55:15,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:55:15,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:55:15,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,365 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,394 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 01:55:15,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:55:15,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:55:15,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:55:15,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:55:15,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (1/1) ... [2024-10-24 01:55:15,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:55:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:55:15,472 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 01:55:15,477 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 01:55:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:55:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:55:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:55:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:55:15,665 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:55:15,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:55:16,331 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-24 01:55:16,332 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:55:16,403 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:55:16,404 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:55:16,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:55:16 BoogieIcfgContainer [2024-10-24 01:55:16,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:55:16,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:55:16,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:55:16,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:55:16,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:55:14" (1/3) ... [2024-10-24 01:55:16,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5357e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:55:16, skipping insertion in model container [2024-10-24 01:55:16,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:55:15" (2/3) ... [2024-10-24 01:55:16,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5357e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:55:16, skipping insertion in model container [2024-10-24 01:55:16,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:55:16" (3/3) ... [2024-10-24 01:55:16,416 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:55:16,436 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:55:16,436 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:55:16,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:55:16,546 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;@6ed33756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:55:16,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:55:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 146 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 01:55:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:55:16,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:16,569 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] [2024-10-24 01:55:16,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:16,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1865519982, now seen corresponding path program 1 times [2024-10-24 01:55:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:16,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584736765] [2024-10-24 01:55:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:16,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:17,116 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 01:55:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584736765] [2024-10-24 01:55:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584736765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:17,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:17,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513484939] [2024-10-24 01:55:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:17,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:17,150 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 146 states have internal predecessors, (257), 0 states have call successors, (0), 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 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:17,250 INFO L93 Difference]: Finished difference Result 319 states and 543 transitions. [2024-10-24 01:55:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:55:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:17,262 INFO L225 Difference]: With dead ends: 319 [2024-10-24 01:55:17,263 INFO L226 Difference]: Without dead ends: 224 [2024-10-24 01:55:17,267 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 01:55:17,274 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 149 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:17,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 444 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:17,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-24 01:55:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2024-10-24 01:55:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 221 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 01:55:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 348 transitions. [2024-10-24 01:55:17,333 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 348 transitions. Word has length 61 [2024-10-24 01:55:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:17,333 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 348 transitions. [2024-10-24 01:55:17,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 348 transitions. [2024-10-24 01:55:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:55:17,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:17,336 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] [2024-10-24 01:55:17,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:55:17,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:17,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash 152055503, now seen corresponding path program 1 times [2024-10-24 01:55:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:17,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570269398] [2024-10-24 01:55:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:17,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:17,552 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 01:55:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570269398] [2024-10-24 01:55:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570269398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:17,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:17,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190811748] [2024-10-24 01:55:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:17,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:17,558 INFO L87 Difference]: Start difference. First operand 222 states and 348 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 01:55:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:17,603 INFO L93 Difference]: Finished difference Result 538 states and 868 transitions. [2024-10-24 01:55:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:17,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-24 01:55:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:17,613 INFO L225 Difference]: With dead ends: 538 [2024-10-24 01:55:17,617 INFO L226 Difference]: Without dead ends: 372 [2024-10-24 01:55:17,618 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 01:55:17,619 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:17,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 413 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-10-24 01:55:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 370. [2024-10-24 01:55:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.6016260162601625) internal successors, (591), 369 states have internal predecessors, (591), 0 states have call successors, (0), 0 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 01:55:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 591 transitions. [2024-10-24 01:55:17,643 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 591 transitions. Word has length 63 [2024-10-24 01:55:17,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:17,643 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 591 transitions. [2024-10-24 01:55:17,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 01:55:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 591 transitions. [2024-10-24 01:55:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:55:17,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:17,646 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] [2024-10-24 01:55:17,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:55:17,647 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:17,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2126698160, now seen corresponding path program 1 times [2024-10-24 01:55:17,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:17,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690813362] [2024-10-24 01:55:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:17,807 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 01:55:17,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690813362] [2024-10-24 01:55:17,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690813362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:17,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716526158] [2024-10-24 01:55:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:17,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:17,812 INFO L87 Difference]: Start difference. First operand 370 states and 591 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 01:55:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:17,850 INFO L93 Difference]: Finished difference Result 966 states and 1569 transitions. [2024-10-24 01:55:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-10-24 01:55:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:17,857 INFO L225 Difference]: With dead ends: 966 [2024-10-24 01:55:17,857 INFO L226 Difference]: Without dead ends: 652 [2024-10-24 01:55:17,859 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 01:55:17,860 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:17,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 414 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2024-10-24 01:55:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 650. [2024-10-24 01:55:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 1.613251155624037) internal successors, (1047), 649 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 01:55:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1047 transitions. [2024-10-24 01:55:17,906 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1047 transitions. Word has length 65 [2024-10-24 01:55:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:17,906 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1047 transitions. [2024-10-24 01:55:17,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 01:55:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1047 transitions. [2024-10-24 01:55:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 01:55:17,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:17,911 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] [2024-10-24 01:55:17,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:55:17,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:17,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:17,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1914747537, now seen corresponding path program 1 times [2024-10-24 01:55:17,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:17,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585476371] [2024-10-24 01:55:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:17,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:18,184 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 01:55:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585476371] [2024-10-24 01:55:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585476371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504707015] [2024-10-24 01:55:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:18,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:18,190 INFO L87 Difference]: Start difference. First operand 650 states and 1047 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 01:55:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:18,463 INFO L93 Difference]: Finished difference Result 2806 states and 4617 transitions. [2024-10-24 01:55:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:55:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-10-24 01:55:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:18,476 INFO L225 Difference]: With dead ends: 2806 [2024-10-24 01:55:18,476 INFO L226 Difference]: Without dead ends: 2212 [2024-10-24 01:55:18,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:55:18,480 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:18,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1615 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:55:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-10-24 01:55:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1169. [2024-10-24 01:55:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.6241438356164384) internal successors, (1897), 1168 states have internal predecessors, (1897), 0 states have call successors, (0), 0 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 01:55:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1897 transitions. [2024-10-24 01:55:18,537 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1897 transitions. Word has length 67 [2024-10-24 01:55:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:18,539 INFO L471 AbstractCegarLoop]: Abstraction has 1169 states and 1897 transitions. [2024-10-24 01:55:18,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 01:55:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1897 transitions. [2024-10-24 01:55:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 01:55:18,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:18,543 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] [2024-10-24 01:55:18,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:55:18,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:18,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -834872683, now seen corresponding path program 1 times [2024-10-24 01:55:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643062385] [2024-10-24 01:55:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:18,685 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 01:55:18,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:18,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643062385] [2024-10-24 01:55:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643062385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:18,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737639852] [2024-10-24 01:55:18,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:18,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:18,691 INFO L87 Difference]: Start difference. First operand 1169 states and 1897 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 01:55:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:18,791 INFO L93 Difference]: Finished difference Result 3408 states and 5598 transitions. [2024-10-24 01:55:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:55:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-10-24 01:55:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:18,802 INFO L225 Difference]: With dead ends: 3408 [2024-10-24 01:55:18,803 INFO L226 Difference]: Without dead ends: 2295 [2024-10-24 01:55:18,805 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 01:55:18,808 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 430 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 753 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 01:55:18,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 753 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2024-10-24 01:55:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1723. [2024-10-24 01:55:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 1.6300813008130082) internal successors, (2807), 1722 states have internal predecessors, (2807), 0 states have call successors, (0), 0 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 01:55:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2807 transitions. [2024-10-24 01:55:18,894 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2807 transitions. Word has length 68 [2024-10-24 01:55:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:18,895 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2807 transitions. [2024-10-24 01:55:18,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 01:55:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2807 transitions. [2024-10-24 01:55:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:55:18,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:18,898 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] [2024-10-24 01:55:18,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:55:18,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:18,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1554445324, now seen corresponding path program 1 times [2024-10-24 01:55:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289736321] [2024-10-24 01:55:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:18,994 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 01:55:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289736321] [2024-10-24 01:55:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289736321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:18,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:18,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017951344] [2024-10-24 01:55:18,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:18,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:18,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:18,999 INFO L87 Difference]: Start difference. First operand 1723 states and 2807 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:19,040 INFO L93 Difference]: Finished difference Result 3778 states and 6217 transitions. [2024-10-24 01:55:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:19,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-24 01:55:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:19,054 INFO L225 Difference]: With dead ends: 3778 [2024-10-24 01:55:19,055 INFO L226 Difference]: Without dead ends: 2590 [2024-10-24 01:55:19,058 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 01:55:19,059 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 510 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 01:55:19,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 510 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2024-10-24 01:55:19,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2588. [2024-10-24 01:55:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2587 states have (on average 1.6335523772709701) internal successors, (4226), 2587 states have internal predecessors, (4226), 0 states have call successors, (0), 0 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 01:55:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4226 transitions. [2024-10-24 01:55:19,127 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4226 transitions. Word has length 69 [2024-10-24 01:55:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:19,128 INFO L471 AbstractCegarLoop]: Abstraction has 2588 states and 4226 transitions. [2024-10-24 01:55:19,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4226 transitions. [2024-10-24 01:55:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:55:19,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:19,129 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] [2024-10-24 01:55:19,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:55:19,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:19,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 867555242, now seen corresponding path program 1 times [2024-10-24 01:55:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739727798] [2024-10-24 01:55:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:19,203 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 01:55:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739727798] [2024-10-24 01:55:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739727798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062193177] [2024-10-24 01:55:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:19,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:19,207 INFO L87 Difference]: Start difference. First operand 2588 states and 4226 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:19,255 INFO L93 Difference]: Finished difference Result 5032 states and 8245 transitions. [2024-10-24 01:55:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-24 01:55:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:19,271 INFO L225 Difference]: With dead ends: 5032 [2024-10-24 01:55:19,271 INFO L226 Difference]: Without dead ends: 3598 [2024-10-24 01:55:19,275 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 01:55:19,276 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 496 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 01:55:19,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 496 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2024-10-24 01:55:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3596. [2024-10-24 01:55:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3595 states have (on average 1.6289290681502087) internal successors, (5856), 3595 states have internal predecessors, (5856), 0 states have call successors, (0), 0 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 01:55:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5856 transitions. [2024-10-24 01:55:19,396 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5856 transitions. Word has length 69 [2024-10-24 01:55:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:19,396 INFO L471 AbstractCegarLoop]: Abstraction has 3596 states and 5856 transitions. [2024-10-24 01:55:19,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5856 transitions. [2024-10-24 01:55:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:55:19,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:19,398 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] [2024-10-24 01:55:19,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:55:19,399 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:19,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -169195560, now seen corresponding path program 1 times [2024-10-24 01:55:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:19,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529187412] [2024-10-24 01:55:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:19,538 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 01:55:19,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529187412] [2024-10-24 01:55:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529187412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:19,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:19,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835025964] [2024-10-24 01:55:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:19,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:19,540 INFO L87 Difference]: Start difference. First operand 3596 states and 5856 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:19,671 INFO L93 Difference]: Finished difference Result 11302 states and 18474 transitions. [2024-10-24 01:55:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:55:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-24 01:55:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:19,703 INFO L225 Difference]: With dead ends: 11302 [2024-10-24 01:55:19,703 INFO L226 Difference]: Without dead ends: 7780 [2024-10-24 01:55:19,711 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 01:55:19,712 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 745 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 01:55:19,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 745 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2024-10-24 01:55:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 5669. [2024-10-24 01:55:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5669 states, 5668 states have (on average 1.6233239237826393) internal successors, (9201), 5668 states have internal predecessors, (9201), 0 states have call successors, (0), 0 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 01:55:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 9201 transitions. [2024-10-24 01:55:19,870 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 9201 transitions. Word has length 69 [2024-10-24 01:55:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:19,870 INFO L471 AbstractCegarLoop]: Abstraction has 5669 states and 9201 transitions. [2024-10-24 01:55:19,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 9201 transitions. [2024-10-24 01:55:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:55:19,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:19,910 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] [2024-10-24 01:55:19,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:55:19,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash -73418808, now seen corresponding path program 1 times [2024-10-24 01:55:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702179857] [2024-10-24 01:55:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:19,981 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 01:55:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702179857] [2024-10-24 01:55:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702179857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558217723] [2024-10-24 01:55:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:19,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:19,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:19,984 INFO L87 Difference]: Start difference. First operand 5669 states and 9201 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:20,052 INFO L93 Difference]: Finished difference Result 11089 states and 18038 transitions. [2024-10-24 01:55:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-24 01:55:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:20,082 INFO L225 Difference]: With dead ends: 11089 [2024-10-24 01:55:20,083 INFO L226 Difference]: Without dead ends: 7837 [2024-10-24 01:55:20,090 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 01:55:20,091 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 473 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 01:55:20,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7837 states. [2024-10-24 01:55:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7837 to 7835. [2024-10-24 01:55:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7834 states have (on average 1.6153944345162115) internal successors, (12655), 7834 states have internal predecessors, (12655), 0 states have call successors, (0), 0 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 01:55:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 12655 transitions. [2024-10-24 01:55:20,285 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 12655 transitions. Word has length 69 [2024-10-24 01:55:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:20,286 INFO L471 AbstractCegarLoop]: Abstraction has 7835 states and 12655 transitions. [2024-10-24 01:55:20,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:55:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 12655 transitions. [2024-10-24 01:55:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 01:55:20,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:20,287 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] [2024-10-24 01:55:20,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:55:20,288 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:20,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1003483204, now seen corresponding path program 1 times [2024-10-24 01:55:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346754475] [2024-10-24 01:55:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:20,430 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 01:55:20,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346754475] [2024-10-24 01:55:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346754475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521636485] [2024-10-24 01:55:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:20,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:20,433 INFO L87 Difference]: Start difference. First operand 7835 states and 12655 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 01:55:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:20,617 INFO L93 Difference]: Finished difference Result 24464 states and 39612 transitions. [2024-10-24 01:55:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:55:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-10-24 01:55:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:20,666 INFO L225 Difference]: With dead ends: 24464 [2024-10-24 01:55:20,666 INFO L226 Difference]: Without dead ends: 16719 [2024-10-24 01:55:20,683 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 01:55:20,684 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 747 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 01:55:20,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 747 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2024-10-24 01:55:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 12234. [2024-10-24 01:55:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.6072917518188508) internal successors, (19662), 12233 states have internal predecessors, (19662), 0 states have call successors, (0), 0 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 01:55:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 19662 transitions. [2024-10-24 01:55:21,122 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 19662 transitions. Word has length 70 [2024-10-24 01:55:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:21,123 INFO L471 AbstractCegarLoop]: Abstraction has 12234 states and 19662 transitions. [2024-10-24 01:55:21,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 01:55:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 19662 transitions. [2024-10-24 01:55:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:55:21,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:21,124 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] [2024-10-24 01:55:21,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:55:21,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:21,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash 502971341, now seen corresponding path program 1 times [2024-10-24 01:55:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654634252] [2024-10-24 01:55:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:21,382 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 01:55:21,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:21,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654634252] [2024-10-24 01:55:21,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654634252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:21,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:21,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984423991] [2024-10-24 01:55:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:21,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:21,385 INFO L87 Difference]: Start difference. First operand 12234 states and 19662 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:21,556 INFO L93 Difference]: Finished difference Result 24380 states and 39201 transitions. [2024-10-24 01:55:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:21,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-24 01:55:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:21,586 INFO L225 Difference]: With dead ends: 24380 [2024-10-24 01:55:21,587 INFO L226 Difference]: Without dead ends: 12236 [2024-10-24 01:55:21,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:55:21,606 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 358 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:21,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 605 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2024-10-24 01:55:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12234. [2024-10-24 01:55:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.597073489740865) internal successors, (19537), 12233 states have internal predecessors, (19537), 0 states have call successors, (0), 0 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 01:55:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 19537 transitions. [2024-10-24 01:55:21,889 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 19537 transitions. Word has length 72 [2024-10-24 01:55:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:21,889 INFO L471 AbstractCegarLoop]: Abstraction has 12234 states and 19537 transitions. [2024-10-24 01:55:21,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 19537 transitions. [2024-10-24 01:55:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 01:55:21,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:21,891 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] [2024-10-24 01:55:21,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:55:21,891 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:21,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1124745034, now seen corresponding path program 1 times [2024-10-24 01:55:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:21,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184847734] [2024-10-24 01:55:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:22,159 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 01:55:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184847734] [2024-10-24 01:55:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184847734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:22,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903428112] [2024-10-24 01:55:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:22,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:22,162 INFO L87 Difference]: Start difference. First operand 12234 states and 19537 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:22,339 INFO L93 Difference]: Finished difference Result 35012 states and 56061 transitions. [2024-10-24 01:55:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 01:55:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:22,493 INFO L225 Difference]: With dead ends: 35012 [2024-10-24 01:55:22,493 INFO L226 Difference]: Without dead ends: 22868 [2024-10-24 01:55:22,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:55:22,516 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 118 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:22,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 809 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22868 states. [2024-10-24 01:55:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22868 to 22866. [2024-10-24 01:55:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22866 states, 22865 states have (on average 1.5857424010496393) internal successors, (36258), 22865 states have internal predecessors, (36258), 0 states have call successors, (0), 0 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 01:55:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22866 states to 22866 states and 36258 transitions. [2024-10-24 01:55:23,065 INFO L78 Accepts]: Start accepts. Automaton has 22866 states and 36258 transitions. Word has length 75 [2024-10-24 01:55:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:23,065 INFO L471 AbstractCegarLoop]: Abstraction has 22866 states and 36258 transitions. [2024-10-24 01:55:23,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 22866 states and 36258 transitions. [2024-10-24 01:55:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:55:23,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:23,066 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] [2024-10-24 01:55:23,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:55:23,067 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:23,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:23,067 INFO L85 PathProgramCache]: Analyzing trace with hash 505448394, now seen corresponding path program 1 times [2024-10-24 01:55:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030685181] [2024-10-24 01:55:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:23,555 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 01:55:23,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:23,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030685181] [2024-10-24 01:55:23,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030685181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:23,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:23,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544339719] [2024-10-24 01:55:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:23,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:23,558 INFO L87 Difference]: Start difference. First operand 22866 states and 36258 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:23,662 INFO L93 Difference]: Finished difference Result 23592 states and 37345 transitions. [2024-10-24 01:55:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:55:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:23,716 INFO L225 Difference]: With dead ends: 23592 [2024-10-24 01:55:23,717 INFO L226 Difference]: Without dead ends: 23590 [2024-10-24 01:55:23,729 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 01:55:23,730 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 0 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 862 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 01:55:23,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 862 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23590 states. [2024-10-24 01:55:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23590 to 23590. [2024-10-24 01:55:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23590 states, 23589 states have (on average 1.567383102293442) internal successors, (36973), 23589 states have internal predecessors, (36973), 0 states have call successors, (0), 0 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 01:55:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23590 states to 23590 states and 36973 transitions. [2024-10-24 01:55:24,132 INFO L78 Accepts]: Start accepts. Automaton has 23590 states and 36973 transitions. Word has length 76 [2024-10-24 01:55:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:24,133 INFO L471 AbstractCegarLoop]: Abstraction has 23590 states and 36973 transitions. [2024-10-24 01:55:24,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 23590 states and 36973 transitions. [2024-10-24 01:55:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 01:55:24,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:24,136 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:24,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:55:24,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:24,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1515871777, now seen corresponding path program 1 times [2024-10-24 01:55:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:24,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320676068] [2024-10-24 01:55:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:55:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320676068] [2024-10-24 01:55:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320676068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86100828] [2024-10-24 01:55:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:24,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:24,470 INFO L87 Difference]: Start difference. First operand 23590 states and 36973 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:24,773 INFO L93 Difference]: Finished difference Result 57666 states and 90689 transitions. [2024-10-24 01:55:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-24 01:55:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:24,897 INFO L225 Difference]: With dead ends: 57666 [2024-10-24 01:55:24,898 INFO L226 Difference]: Without dead ends: 46304 [2024-10-24 01:55:24,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:55:24,932 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 543 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:24,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1086 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46304 states. [2024-10-24 01:55:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46304 to 36198. [2024-10-24 01:55:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36198 states, 36197 states have (on average 1.5652402132773435) internal successors, (56657), 36197 states have internal predecessors, (56657), 0 states have call successors, (0), 0 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 01:55:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36198 states to 36198 states and 56657 transitions. [2024-10-24 01:55:25,633 INFO L78 Accepts]: Start accepts. Automaton has 36198 states and 56657 transitions. Word has length 100 [2024-10-24 01:55:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:25,633 INFO L471 AbstractCegarLoop]: Abstraction has 36198 states and 56657 transitions. [2024-10-24 01:55:25,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 36198 states and 56657 transitions. [2024-10-24 01:55:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 01:55:25,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:25,636 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:25,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:55:25,637 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:25,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2092205437, now seen corresponding path program 1 times [2024-10-24 01:55:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435632572] [2024-10-24 01:55:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:55:25,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:25,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435632572] [2024-10-24 01:55:25,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435632572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:25,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:25,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:25,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468856600] [2024-10-24 01:55:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:25,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:25,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:25,796 INFO L87 Difference]: Start difference. First operand 36198 states and 56657 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:26,231 INFO L93 Difference]: Finished difference Result 64668 states and 101701 transitions. [2024-10-24 01:55:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-24 01:55:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:26,345 INFO L225 Difference]: With dead ends: 64668 [2024-10-24 01:55:26,345 INFO L226 Difference]: Without dead ends: 53536 [2024-10-24 01:55:26,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:55:26,384 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 550 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:26,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 994 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53536 states. [2024-10-24 01:55:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53536 to 49018. [2024-10-24 01:55:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49018 states, 49017 states have (on average 1.5666605463410654) internal successors, (76793), 49017 states have internal predecessors, (76793), 0 states have call successors, (0), 0 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 01:55:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49018 states to 49018 states and 76793 transitions. [2024-10-24 01:55:27,501 INFO L78 Accepts]: Start accepts. Automaton has 49018 states and 76793 transitions. Word has length 100 [2024-10-24 01:55:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:27,503 INFO L471 AbstractCegarLoop]: Abstraction has 49018 states and 76793 transitions. [2024-10-24 01:55:27,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 49018 states and 76793 transitions. [2024-10-24 01:55:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 01:55:27,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:27,506 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:55:27,507 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:27,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1151231387, now seen corresponding path program 1 times [2024-10-24 01:55:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:27,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920049444] [2024-10-24 01:55:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:55:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:27,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920049444] [2024-10-24 01:55:27,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920049444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:27,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:27,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:55:27,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177207915] [2024-10-24 01:55:27,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:27,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:55:27,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:55:27,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:55:27,663 INFO L87 Difference]: Start difference. First operand 49018 states and 76793 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:28,196 INFO L93 Difference]: Finished difference Result 69088 states and 108649 transitions. [2024-10-24 01:55:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-24 01:55:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:28,282 INFO L225 Difference]: With dead ends: 69088 [2024-10-24 01:55:28,282 INFO L226 Difference]: Without dead ends: 57956 [2024-10-24 01:55:28,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:55:28,305 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 555 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:28,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1087 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57956 states. [2024-10-24 01:55:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57956 to 56158. [2024-10-24 01:55:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56158 states, 56157 states have (on average 1.5682639742151467) internal successors, (88069), 56157 states have internal predecessors, (88069), 0 states have call successors, (0), 0 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 01:55:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56158 states to 56158 states and 88069 transitions. [2024-10-24 01:55:29,213 INFO L78 Accepts]: Start accepts. Automaton has 56158 states and 88069 transitions. Word has length 100 [2024-10-24 01:55:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:29,214 INFO L471 AbstractCegarLoop]: Abstraction has 56158 states and 88069 transitions. [2024-10-24 01:55:29,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 56158 states and 88069 transitions. [2024-10-24 01:55:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-24 01:55:29,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:29,217 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:29,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:55:29,218 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:29,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash 190110983, now seen corresponding path program 1 times [2024-10-24 01:55:29,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420340972] [2024-10-24 01:55:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:55:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420340972] [2024-10-24 01:55:29,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420340972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:29,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:29,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:29,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684426175] [2024-10-24 01:55:29,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:29,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:29,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:29,373 INFO L87 Difference]: Start difference. First operand 56158 states and 88069 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:29,954 INFO L93 Difference]: Finished difference Result 91421 states and 144038 transitions. [2024-10-24 01:55:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:55:29,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-10-24 01:55:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:30,095 INFO L225 Difference]: With dead ends: 91421 [2024-10-24 01:55:30,096 INFO L226 Difference]: Without dead ends: 72827 [2024-10-24 01:55:30,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:30,141 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 249 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:30,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 700 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:55:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72827 states. [2024-10-24 01:55:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72827 to 71031. [2024-10-24 01:55:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71031 states, 71030 states have (on average 1.5684499507250458) internal successors, (111407), 71030 states have internal predecessors, (111407), 0 states have call successors, (0), 0 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 01:55:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71031 states to 71031 states and 111407 transitions. [2024-10-24 01:55:31,209 INFO L78 Accepts]: Start accepts. Automaton has 71031 states and 111407 transitions. Word has length 101 [2024-10-24 01:55:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:31,209 INFO L471 AbstractCegarLoop]: Abstraction has 71031 states and 111407 transitions. [2024-10-24 01:55:31,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 71031 states and 111407 transitions. [2024-10-24 01:55:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-24 01:55:31,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:31,212 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:31,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:55:31,212 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:31,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -158576971, now seen corresponding path program 1 times [2024-10-24 01:55:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749161067] [2024-10-24 01:55:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:55:31,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:31,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749161067] [2024-10-24 01:55:31,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749161067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:31,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074772753] [2024-10-24 01:55:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:31,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:31,595 INFO L87 Difference]: Start difference. First operand 71031 states and 111407 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:32,138 INFO L93 Difference]: Finished difference Result 153123 states and 240887 transitions. [2024-10-24 01:55:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-10-24 01:55:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:32,343 INFO L225 Difference]: With dead ends: 153123 [2024-10-24 01:55:32,343 INFO L226 Difference]: Without dead ends: 119825 [2024-10-24 01:55:32,409 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 01:55:32,409 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:32,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 403 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:55:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119825 states. [2024-10-24 01:55:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119825 to 119547. [2024-10-24 01:55:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119547 states, 119546 states have (on average 1.5682498787077777) internal successors, (187478), 119546 states have internal predecessors, (187478), 0 states have call successors, (0), 0 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 01:55:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119547 states to 119547 states and 187478 transitions. [2024-10-24 01:55:34,689 INFO L78 Accepts]: Start accepts. Automaton has 119547 states and 187478 transitions. Word has length 101 [2024-10-24 01:55:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:34,689 INFO L471 AbstractCegarLoop]: Abstraction has 119547 states and 187478 transitions. [2024-10-24 01:55:34,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 119547 states and 187478 transitions. [2024-10-24 01:55:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 01:55:34,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:34,693 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:34,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:55:34,693 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:34,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1717689480, now seen corresponding path program 1 times [2024-10-24 01:55:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183682258] [2024-10-24 01:55:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:55:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:34,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183682258] [2024-10-24 01:55:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183682258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:34,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924914225] [2024-10-24 01:55:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:34,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:34,854 INFO L87 Difference]: Start difference. First operand 119547 states and 187478 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:36,114 INFO L93 Difference]: Finished difference Result 220887 states and 346710 transitions. [2024-10-24 01:55:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-10-24 01:55:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:36,332 INFO L225 Difference]: With dead ends: 220887 [2024-10-24 01:55:36,332 INFO L226 Difference]: Without dead ends: 101430 [2024-10-24 01:55:36,380 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 01:55:36,381 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 94 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:36,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 492 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101430 states. [2024-10-24 01:55:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101430 to 101200. [2024-10-24 01:55:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101200 states, 101199 states have (on average 1.5622782833822468) internal successors, (158101), 101199 states have internal predecessors, (158101), 0 states have call successors, (0), 0 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 01:55:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101200 states to 101200 states and 158101 transitions. [2024-10-24 01:55:37,755 INFO L78 Accepts]: Start accepts. Automaton has 101200 states and 158101 transitions. Word has length 102 [2024-10-24 01:55:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:37,755 INFO L471 AbstractCegarLoop]: Abstraction has 101200 states and 158101 transitions. [2024-10-24 01:55:37,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 101200 states and 158101 transitions. [2024-10-24 01:55:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 01:55:37,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:37,758 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:37,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:55:37,758 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:37,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1636303766, now seen corresponding path program 1 times [2024-10-24 01:55:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:37,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541467258] [2024-10-24 01:55:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:37,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:55:37,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541467258] [2024-10-24 01:55:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541467258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992145029] [2024-10-24 01:55:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:37,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:37,890 INFO L87 Difference]: Start difference. First operand 101200 states and 158101 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:38,998 INFO L93 Difference]: Finished difference Result 143672 states and 224581 transitions. [2024-10-24 01:55:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:38,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-10-24 01:55:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:39,077 INFO L225 Difference]: With dead ends: 143672 [2024-10-24 01:55:39,077 INFO L226 Difference]: Without dead ends: 42563 [2024-10-24 01:55:39,126 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 01:55:39,127 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 81 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:39,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42563 states. [2024-10-24 01:55:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42563 to 42493. [2024-10-24 01:55:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42493 states, 42492 states have (on average 1.5561046785277228) internal successors, (66122), 42492 states have internal predecessors, (66122), 0 states have call successors, (0), 0 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 01:55:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42493 states to 42493 states and 66122 transitions. [2024-10-24 01:55:39,738 INFO L78 Accepts]: Start accepts. Automaton has 42493 states and 66122 transitions. Word has length 102 [2024-10-24 01:55:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:39,739 INFO L471 AbstractCegarLoop]: Abstraction has 42493 states and 66122 transitions. [2024-10-24 01:55:39,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 42493 states and 66122 transitions. [2024-10-24 01:55:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 01:55:39,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:39,741 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:39,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:55:39,741 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:39,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1335068748, now seen corresponding path program 1 times [2024-10-24 01:55:39,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:39,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016071832] [2024-10-24 01:55:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:39,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:55:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016071832] [2024-10-24 01:55:39,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016071832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:39,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610207306] [2024-10-24 01:55:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:39,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:39,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:39,904 INFO L87 Difference]: Start difference. First operand 42493 states and 66122 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:40,158 INFO L93 Difference]: Finished difference Result 62279 states and 96986 transitions. [2024-10-24 01:55:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:40,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-10-24 01:55:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:40,197 INFO L225 Difference]: With dead ends: 62279 [2024-10-24 01:55:40,197 INFO L226 Difference]: Without dead ends: 19877 [2024-10-24 01:55:40,246 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 01:55:40,246 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 68 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:40,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 394 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19877 states. [2024-10-24 01:55:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19877 to 19871. [2024-10-24 01:55:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19871 states, 19870 states have (on average 1.5503271263210872) internal successors, (30805), 19870 states have internal predecessors, (30805), 0 states have call successors, (0), 0 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 01:55:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19871 states to 19871 states and 30805 transitions. [2024-10-24 01:55:41,080 INFO L78 Accepts]: Start accepts. Automaton has 19871 states and 30805 transitions. Word has length 102 [2024-10-24 01:55:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:41,081 INFO L471 AbstractCegarLoop]: Abstraction has 19871 states and 30805 transitions. [2024-10-24 01:55:41,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19871 states and 30805 transitions. [2024-10-24 01:55:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:55:41,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:41,082 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:41,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:55:41,082 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1753216283, now seen corresponding path program 1 times [2024-10-24 01:55:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691992807] [2024-10-24 01:55:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:55:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691992807] [2024-10-24 01:55:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691992807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401761023] [2024-10-24 01:55:41,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:41,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:41,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:41,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:41,421 INFO L87 Difference]: Start difference. First operand 19871 states and 30805 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:41,591 INFO L93 Difference]: Finished difference Result 49011 states and 75987 transitions. [2024-10-24 01:55:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-10-24 01:55:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:41,652 INFO L225 Difference]: With dead ends: 49011 [2024-10-24 01:55:41,652 INFO L226 Difference]: Without dead ends: 36547 [2024-10-24 01:55:41,677 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 01:55:41,678 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 409 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:41,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 632 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36547 states. [2024-10-24 01:55:42,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36547 to 31423. [2024-10-24 01:55:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31423 states, 31422 states have (on average 1.5492966711221436) internal successors, (48682), 31422 states have internal predecessors, (48682), 0 states have call successors, (0), 0 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 01:55:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31423 states to 31423 states and 48682 transitions. [2024-10-24 01:55:42,076 INFO L78 Accepts]: Start accepts. Automaton has 31423 states and 48682 transitions. Word has length 103 [2024-10-24 01:55:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:42,076 INFO L471 AbstractCegarLoop]: Abstraction has 31423 states and 48682 transitions. [2024-10-24 01:55:42,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 31423 states and 48682 transitions. [2024-10-24 01:55:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:55:42,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:42,078 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:42,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:55:42,078 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:42,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -78311717, now seen corresponding path program 1 times [2024-10-24 01:55:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008089499] [2024-10-24 01:55:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:55:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:42,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008089499] [2024-10-24 01:55:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008089499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:42,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:55:42,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529217249] [2024-10-24 01:55:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:42,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:55:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:55:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:55:42,662 INFO L87 Difference]: Start difference. First operand 31423 states and 48682 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:42,888 INFO L93 Difference]: Finished difference Result 75197 states and 116527 transitions. [2024-10-24 01:55:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:55:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-10-24 01:55:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:42,971 INFO L225 Difference]: With dead ends: 75197 [2024-10-24 01:55:42,971 INFO L226 Difference]: Without dead ends: 56369 [2024-10-24 01:55:42,999 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 01:55:43,000 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 420 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:43,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 624 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56369 states. [2024-10-24 01:55:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56369 to 49639. [2024-10-24 01:55:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49639 states, 49638 states have (on average 1.5488537007937466) internal successors, (76882), 49638 states have internal predecessors, (76882), 0 states have call successors, (0), 0 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 01:55:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49639 states to 49639 states and 76882 transitions. [2024-10-24 01:55:43,893 INFO L78 Accepts]: Start accepts. Automaton has 49639 states and 76882 transitions. Word has length 103 [2024-10-24 01:55:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:43,893 INFO L471 AbstractCegarLoop]: Abstraction has 49639 states and 76882 transitions. [2024-10-24 01:55:43,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 49639 states and 76882 transitions. [2024-10-24 01:55:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:55:43,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:43,894 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:43,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:55:43,896 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:43,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1440657073, now seen corresponding path program 1 times [2024-10-24 01:55:43,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:43,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618732788] [2024-10-24 01:55:43,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:43,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:55:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618732788] [2024-10-24 01:55:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618732788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528378253] [2024-10-24 01:55:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:44,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:44,020 INFO L87 Difference]: Start difference. First operand 49639 states and 76882 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:44,426 INFO L93 Difference]: Finished difference Result 146022 states and 225846 transitions. [2024-10-24 01:55:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:44,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-24 01:55:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:44,565 INFO L225 Difference]: With dead ends: 146022 [2024-10-24 01:55:44,565 INFO L226 Difference]: Without dead ends: 96475 [2024-10-24 01:55:44,623 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 01:55:44,624 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:44,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 541 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96475 states. [2024-10-24 01:55:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96475 to 96473. [2024-10-24 01:55:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96473 states, 96472 states have (on average 1.5357720374823782) internal successors, (148159), 96472 states have internal predecessors, (148159), 0 states have call successors, (0), 0 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 01:55:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96473 states to 96473 states and 148159 transitions. [2024-10-24 01:55:46,143 INFO L78 Accepts]: Start accepts. Automaton has 96473 states and 148159 transitions. Word has length 104 [2024-10-24 01:55:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:46,144 INFO L471 AbstractCegarLoop]: Abstraction has 96473 states and 148159 transitions. [2024-10-24 01:55:46,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 96473 states and 148159 transitions. [2024-10-24 01:55:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:55:46,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:46,145 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:46,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:55:46,145 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:46,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1731084199, now seen corresponding path program 1 times [2024-10-24 01:55:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222269654] [2024-10-24 01:55:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:55:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222269654] [2024-10-24 01:55:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222269654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:46,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402727947] [2024-10-24 01:55:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:46,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:46,252 INFO L87 Difference]: Start difference. First operand 96473 states and 148159 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:48,029 INFO L93 Difference]: Finished difference Result 283629 states and 434881 transitions. [2024-10-24 01:55:48,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:48,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-24 01:55:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:48,347 INFO L225 Difference]: With dead ends: 283629 [2024-10-24 01:55:48,347 INFO L226 Difference]: Without dead ends: 187296 [2024-10-24 01:55:48,409 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 01:55:48,410 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:48,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 512 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187296 states. [2024-10-24 01:55:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187296 to 187294. [2024-10-24 01:55:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187294 states, 187293 states have (on average 1.5219255391285311) internal successors, (285046), 187293 states have internal predecessors, (285046), 0 states have call successors, (0), 0 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 01:55:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187294 states to 187294 states and 285046 transitions. [2024-10-24 01:55:51,509 INFO L78 Accepts]: Start accepts. Automaton has 187294 states and 285046 transitions. Word has length 104 [2024-10-24 01:55:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:51,509 INFO L471 AbstractCegarLoop]: Abstraction has 187294 states and 285046 transitions. [2024-10-24 01:55:51,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 187294 states and 285046 transitions. [2024-10-24 01:55:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:55:51,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:51,510 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:51,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 01:55:51,511 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:51,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 650037642, now seen corresponding path program 1 times [2024-10-24 01:55:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:51,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079961655] [2024-10-24 01:55:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 01:55:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079961655] [2024-10-24 01:55:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079961655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:51,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613678905] [2024-10-24 01:55:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:51,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:51,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:51,579 INFO L87 Difference]: Start difference. First operand 187294 states and 285046 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:55:53,810 INFO L93 Difference]: Finished difference Result 463804 states and 704734 transitions. [2024-10-24 01:55:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:55:53,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-10-24 01:55:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:55:54,396 INFO L225 Difference]: With dead ends: 463804 [2024-10-24 01:55:54,396 INFO L226 Difference]: Without dead ends: 276784 [2024-10-24 01:55:54,525 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 01:55:54,526 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 114 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:55:54,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 439 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:55:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276784 states. [2024-10-24 01:55:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276784 to 189150. [2024-10-24 01:55:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189150 states, 189149 states have (on average 1.5216786765988717) internal successors, (287824), 189149 states have internal predecessors, (287824), 0 states have call successors, (0), 0 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 01:55:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189150 states to 189150 states and 287824 transitions. [2024-10-24 01:55:57,906 INFO L78 Accepts]: Start accepts. Automaton has 189150 states and 287824 transitions. Word has length 105 [2024-10-24 01:55:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:55:57,906 INFO L471 AbstractCegarLoop]: Abstraction has 189150 states and 287824 transitions. [2024-10-24 01:55:57,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:55:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 189150 states and 287824 transitions. [2024-10-24 01:55:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:55:57,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:55:57,908 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:55:57,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 01:55:57,908 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:55:57,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:55:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1716173256, now seen corresponding path program 1 times [2024-10-24 01:55:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:55:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116120764] [2024-10-24 01:55:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:55:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:55:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:55:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:55:57,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:55:57,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116120764] [2024-10-24 01:55:57,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116120764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:55:57,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:55:57,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:55:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86509111] [2024-10-24 01:55:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:55:57,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:55:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:55:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:55:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:55:57,975 INFO L87 Difference]: Start difference. First operand 189150 states and 287824 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:56:00,120 INFO L93 Difference]: Finished difference Result 457694 states and 695682 transitions. [2024-10-24 01:56:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:56:00,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-10-24 01:56:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:56:00,622 INFO L225 Difference]: With dead ends: 457694 [2024-10-24 01:56:00,623 INFO L226 Difference]: Without dead ends: 268872 [2024-10-24 01:56:00,772 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 01:56:00,773 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 120 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:56:00,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 442 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:56:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268872 states. [2024-10-24 01:56:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268872 to 191006. [2024-10-24 01:56:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191006 states, 191005 states have (on average 1.521436611607026) internal successors, (290602), 191005 states have internal predecessors, (290602), 0 states have call successors, (0), 0 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 01:56:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191006 states to 191006 states and 290602 transitions. [2024-10-24 01:56:04,651 INFO L78 Accepts]: Start accepts. Automaton has 191006 states and 290602 transitions. Word has length 105 [2024-10-24 01:56:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:56:04,651 INFO L471 AbstractCegarLoop]: Abstraction has 191006 states and 290602 transitions. [2024-10-24 01:56:04,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:56:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 191006 states and 290602 transitions. [2024-10-24 01:56:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:56:04,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:56:04,653 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:56:04,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 01:56:04,653 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:56:04,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:56:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1572025829, now seen corresponding path program 1 times [2024-10-24 01:56:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:56:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083164858] [2024-10-24 01:56:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:56:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms