./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.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/eca-rers2012/Problem17_label08.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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:29:04,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:29:04,325 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:29:04,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:29:04,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:29:04,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:29:04,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:29:04,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:29:04,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:29:04,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:29:04,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:29:04,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:29:04,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:29:04,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:29:04,370 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:29:04,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:29:04,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:29:04,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:29:04,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:29:04,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:29:04,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:29:04,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:29:04,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:29:04,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:29:04,375 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:29:04,375 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:29:04,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:29:04,376 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:29:04,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:29:04,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:29:04,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:29:04,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:29:04,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:29:04,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:29:04,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:29:04,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:29:04,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:29:04,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:29:04,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:29:04,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:29:04,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:29:04,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:29:04,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2024-10-23 21:29:04,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:29:04,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:29:04,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:29:04,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:29:04,673 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:29:04,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-10-23 21:29:06,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:29:06,566 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:29:06,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-10-23 21:29:06,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090f4472c/ca664724687f4e1fb56557e0676e7ea0/FLAGf0053d78d [2024-10-23 21:29:06,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090f4472c/ca664724687f4e1fb56557e0676e7ea0 [2024-10-23 21:29:06,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:29:06,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:29:06,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:29:06,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:29:06,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:29:06,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:29:06" (1/1) ... [2024-10-23 21:29:06,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fde3b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:06, skipping insertion in model container [2024-10-23 21:29:06,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:29:06" (1/1) ... [2024-10-23 21:29:06,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:29:07,126 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/eca-rers2012/Problem17_label08.c[8572,8585] [2024-10-23 21:29:07,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:29:07,738 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:29:07,765 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/eca-rers2012/Problem17_label08.c[8572,8585] [2024-10-23 21:29:08,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:29:08,082 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:29:08,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08 WrapperNode [2024-10-23 21:29:08,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:29:08,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:29:08,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:29:08,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:29:08,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,425 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:29:08,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:29:08,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:29:08,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:29:08,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:29:08,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,769 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]. [2024-10-23 21:29:08,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:08,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:29:09,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:29:09,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:29:09,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:29:09,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (1/1) ... [2024-10-23 21:29:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:29:09,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:09,176 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) [2024-10-23 21:29:09,178 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 [2024-10-23 21:29:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:29:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:29:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:29:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:29:09,290 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:29:09,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:29:12,452 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:29:12,452 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:29:12,500 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:29:12,501 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:29:12,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:29:12 BoogieIcfgContainer [2024-10-23 21:29:12,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:29:12,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:29:12,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:29:12,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:29:12,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:29:06" (1/3) ... [2024-10-23 21:29:12,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9ffe8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:29:12, skipping insertion in model container [2024-10-23 21:29:12,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:29:08" (2/3) ... [2024-10-23 21:29:12,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9ffe8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:29:12, skipping insertion in model container [2024-10-23 21:29:12,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:29:12" (3/3) ... [2024-10-23 21:29:12,514 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2024-10-23 21:29:12,531 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:29:12,531 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:29:12,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:29:12,629 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;@4e3c3a2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:29:12,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:29:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-23 21:29:12,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:12,646 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] [2024-10-23 21:29:12,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:12,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2041408342, now seen corresponding path program 1 times [2024-10-23 21:29:12,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:12,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766175492] [2024-10-23 21:29:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766175492] [2024-10-23 21:29:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766175492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:12,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559574638] [2024-10-23 21:29:12,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:12,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:29:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:29:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:29:12,940 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:13,021 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:29:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:29:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-23 21:29:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:13,036 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:29:13,036 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:29:13,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:29:13,048 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:13,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:29:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:29:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:29:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:29:13,105 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 57 [2024-10-23 21:29:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:13,105 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:29:13,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:29:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-23 21:29:13,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:13,107 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] [2024-10-23 21:29:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:29:13,108 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:13,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1480079138, now seen corresponding path program 1 times [2024-10-23 21:29:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685143836] [2024-10-23 21:29:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685143836] [2024-10-23 21:29:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685143836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:13,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779745404] [2024-10-23 21:29:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:13,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:13,335 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:15,479 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2024-10-23 21:29:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-23 21:29:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:15,485 INFO L225 Difference]: With dead ends: 1499 [2024-10-23 21:29:15,485 INFO L226 Difference]: Without dead ends: 974 [2024-10-23 21:29:15,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:15,488 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 416 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:15,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:29:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-23 21:29:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2024-10-23 21:29:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2024-10-23 21:29:15,530 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 57 [2024-10-23 21:29:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:15,531 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2024-10-23 21:29:15,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2024-10-23 21:29:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-23 21:29:15,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:15,535 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:15,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:29:15,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:15,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1808524590, now seen corresponding path program 1 times [2024-10-23 21:29:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:15,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563196699] [2024-10-23 21:29:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563196699] [2024-10-23 21:29:15,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563196699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:15,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:15,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685148483] [2024-10-23 21:29:15,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:15,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:15,920 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:18,095 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2024-10-23 21:29:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-10-23 21:29:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:18,103 INFO L225 Difference]: With dead ends: 2813 [2024-10-23 21:29:18,103 INFO L226 Difference]: Without dead ends: 1843 [2024-10-23 21:29:18,105 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 [2024-10-23 21:29:18,106 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 433 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:18,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:29:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-23 21:29:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2024-10-23 21:29:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2024-10-23 21:29:18,143 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 127 [2024-10-23 21:29:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:18,145 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2024-10-23 21:29:18,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2024-10-23 21:29:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 21:29:18,155 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:18,155 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:18,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:29:18,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:18,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -512785583, now seen corresponding path program 1 times [2024-10-23 21:29:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:18,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678552846] [2024-10-23 21:29:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:18,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678552846] [2024-10-23 21:29:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678552846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:18,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:18,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397303472] [2024-10-23 21:29:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:18,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:18,440 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:20,265 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2024-10-23 21:29:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-23 21:29:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:20,277 INFO L225 Difference]: With dead ends: 5394 [2024-10-23 21:29:20,278 INFO L226 Difference]: Without dead ends: 2700 [2024-10-23 21:29:20,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:20,285 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:20,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:29:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2024-10-23 21:29:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2024-10-23 21:29:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2024-10-23 21:29:20,337 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 149 [2024-10-23 21:29:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:20,338 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2024-10-23 21:29:20,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2024-10-23 21:29:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-10-23 21:29:20,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:20,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:20,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:29:20,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:20,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 415361413, now seen corresponding path program 1 times [2024-10-23 21:29:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:20,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585665255] [2024-10-23 21:29:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585665255] [2024-10-23 21:29:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585665255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:20,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38562892] [2024-10-23 21:29:20,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:20,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:20,633 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:22,172 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2024-10-23 21:29:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:22,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2024-10-23 21:29:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:22,188 INFO L225 Difference]: With dead ends: 7107 [2024-10-23 21:29:22,189 INFO L226 Difference]: Without dead ends: 4408 [2024-10-23 21:29:22,193 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 [2024-10-23 21:29:22,196 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:22,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2024-10-23 21:29:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2024-10-23 21:29:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2024-10-23 21:29:22,270 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 209 [2024-10-23 21:29:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:22,271 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2024-10-23 21:29:22,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2024-10-23 21:29:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-23 21:29:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:22,275 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:22,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:29:22,276 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:22,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1787486784, now seen corresponding path program 1 times [2024-10-23 21:29:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414702303] [2024-10-23 21:29:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:29:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414702303] [2024-10-23 21:29:22,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414702303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:22,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:22,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:22,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523769094] [2024-10-23 21:29:22,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:22,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:22,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:22,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:22,463 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:24,010 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2024-10-23 21:29:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 211 [2024-10-23 21:29:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:24,031 INFO L225 Difference]: With dead ends: 10935 [2024-10-23 21:29:24,032 INFO L226 Difference]: Without dead ends: 6527 [2024-10-23 21:29:24,036 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 [2024-10-23 21:29:24,037 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 392 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:24,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2024-10-23 21:29:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2024-10-23 21:29:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2024-10-23 21:29:24,118 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 211 [2024-10-23 21:29:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:24,118 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2024-10-23 21:29:24,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2024-10-23 21:29:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-23 21:29:24,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:24,123 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:24,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:29:24,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:24,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1332614778, now seen corresponding path program 1 times [2024-10-23 21:29:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109584729] [2024-10-23 21:29:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:24,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:24,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109584729] [2024-10-23 21:29:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109584729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:24,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:24,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41961880] [2024-10-23 21:29:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:24,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:24,384 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:25,948 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2024-10-23 21:29:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 277 [2024-10-23 21:29:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:25,965 INFO L225 Difference]: With dead ends: 10044 [2024-10-23 21:29:25,965 INFO L226 Difference]: Without dead ends: 5664 [2024-10-23 21:29:25,970 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 [2024-10-23 21:29:25,971 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 378 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:25,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2024-10-23 21:29:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2024-10-23 21:29:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2024-10-23 21:29:26,053 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 277 [2024-10-23 21:29:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:26,053 INFO L471 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2024-10-23 21:29:26,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2024-10-23 21:29:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-10-23 21:29:26,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:26,058 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:26,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:29:26,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:26,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash 841043395, now seen corresponding path program 1 times [2024-10-23 21:29:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599498501] [2024-10-23 21:29:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:29:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599498501] [2024-10-23 21:29:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599498501] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580701276] [2024-10-23 21:29:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:26,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:26,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:26,441 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:28,076 INFO L93 Difference]: Finished difference Result 13050 states and 15222 transitions. [2024-10-23 21:29:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 289 [2024-10-23 21:29:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:28,096 INFO L225 Difference]: With dead ends: 13050 [2024-10-23 21:29:28,096 INFO L226 Difference]: Without dead ends: 7390 [2024-10-23 21:29:28,103 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 [2024-10-23 21:29:28,103 INFO L432 NwaCegarLoop]: 583 mSDtfsCounter, 495 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:28,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 626 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:29:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2024-10-23 21:29:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 6958. [2024-10-23 21:29:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 6957 states have (on average 1.1637199942503953) internal successors, (8096), 6957 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 8096 transitions. [2024-10-23 21:29:28,223 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 8096 transitions. Word has length 289 [2024-10-23 21:29:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:28,224 INFO L471 AbstractCegarLoop]: Abstraction has 6958 states and 8096 transitions. [2024-10-23 21:29:28,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 8096 transitions. [2024-10-23 21:29:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-10-23 21:29:28,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:28,229 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:28,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:29:28,230 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:28,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -443537872, now seen corresponding path program 1 times [2024-10-23 21:29:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154528866] [2024-10-23 21:29:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:29:28,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:28,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154528866] [2024-10-23 21:29:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154528866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:28,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:28,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262849364] [2024-10-23 21:29:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:28,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:28,501 INFO L87 Difference]: Start difference. First operand 6958 states and 8096 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:30,074 INFO L93 Difference]: Finished difference Result 17315 states and 20392 transitions. [2024-10-23 21:29:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 294 [2024-10-23 21:29:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:30,092 INFO L225 Difference]: With dead ends: 17315 [2024-10-23 21:29:30,092 INFO L226 Difference]: Without dead ends: 10358 [2024-10-23 21:29:30,100 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 [2024-10-23 21:29:30,100 INFO L432 NwaCegarLoop]: 772 mSDtfsCounter, 379 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:30,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 838 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10358 states. [2024-10-23 21:29:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10358 to 9508. [2024-10-23 21:29:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9507 states have (on average 1.1414747028505312) internal successors, (10852), 9507 states have internal predecessors, (10852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 10852 transitions. [2024-10-23 21:29:30,218 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 10852 transitions. Word has length 294 [2024-10-23 21:29:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:30,219 INFO L471 AbstractCegarLoop]: Abstraction has 9508 states and 10852 transitions. [2024-10-23 21:29:30,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 10852 transitions. [2024-10-23 21:29:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-10-23 21:29:30,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:30,224 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:30,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:29:30,224 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:30,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1335639960, now seen corresponding path program 1 times [2024-10-23 21:29:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286325333] [2024-10-23 21:29:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:30,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286325333] [2024-10-23 21:29:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286325333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:30,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667467187] [2024-10-23 21:29:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:30,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:30,501 INFO L87 Difference]: Start difference. First operand 9508 states and 10852 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:32,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:32,193 INFO L93 Difference]: Finished difference Result 22431 states and 25677 transitions. [2024-10-23 21:29:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 312 [2024-10-23 21:29:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:32,214 INFO L225 Difference]: With dead ends: 22431 [2024-10-23 21:29:32,214 INFO L226 Difference]: Without dead ends: 12492 [2024-10-23 21:29:32,225 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 [2024-10-23 21:29:32,225 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 443 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:32,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 292 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:29:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12492 states. [2024-10-23 21:29:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12492 to 11636. [2024-10-23 21:29:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11636 states, 11635 states have (on average 1.147314138375591) internal successors, (13349), 11635 states have internal predecessors, (13349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11636 states to 11636 states and 13349 transitions. [2024-10-23 21:29:32,368 INFO L78 Accepts]: Start accepts. Automaton has 11636 states and 13349 transitions. Word has length 312 [2024-10-23 21:29:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:32,369 INFO L471 AbstractCegarLoop]: Abstraction has 11636 states and 13349 transitions. [2024-10-23 21:29:32,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 11636 states and 13349 transitions. [2024-10-23 21:29:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-23 21:29:32,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:32,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:29:32,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:29:32,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:32,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1567321429, now seen corresponding path program 1 times [2024-10-23 21:29:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528738081] [2024-10-23 21:29:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:32,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:32,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528738081] [2024-10-23 21:29:32,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528738081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:32,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:32,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:29:32,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613311613] [2024-10-23 21:29:32,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:32,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:32,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:32,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:29:32,800 INFO L87 Difference]: Start difference. First operand 11636 states and 13349 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:35,536 INFO L93 Difference]: Finished difference Result 41231 states and 47493 transitions. [2024-10-23 21:29:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 317 [2024-10-23 21:29:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:35,580 INFO L225 Difference]: With dead ends: 41231 [2024-10-23 21:29:35,581 INFO L226 Difference]: Without dead ends: 28315 [2024-10-23 21:29:35,598 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 [2024-10-23 21:29:35,598 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 858 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:35,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 332 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:29:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28315 states. [2024-10-23 21:29:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28315 to 27840. [2024-10-23 21:29:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27840 states, 27839 states have (on average 1.1353137684543266) internal successors, (31606), 27839 states have internal predecessors, (31606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27840 states to 27840 states and 31606 transitions. [2024-10-23 21:29:35,941 INFO L78 Accepts]: Start accepts. Automaton has 27840 states and 31606 transitions. Word has length 317 [2024-10-23 21:29:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:35,942 INFO L471 AbstractCegarLoop]: Abstraction has 27840 states and 31606 transitions. [2024-10-23 21:29:35,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27840 states and 31606 transitions. [2024-10-23 21:29:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-10-23 21:29:35,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:35,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:35,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:29:35,951 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:35,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 544194523, now seen corresponding path program 1 times [2024-10-23 21:29:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174901118] [2024-10-23 21:29:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174901118] [2024-10-23 21:29:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174901118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348182706] [2024-10-23 21:29:36,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:36,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:36,346 INFO L87 Difference]: Start difference. First operand 27840 states and 31606 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:37,980 INFO L93 Difference]: Finished difference Result 71053 states and 80877 transitions. [2024-10-23 21:29:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:37,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 346 [2024-10-23 21:29:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:38,023 INFO L225 Difference]: With dead ends: 71053 [2024-10-23 21:29:38,023 INFO L226 Difference]: Without dead ends: 42776 [2024-10-23 21:29:38,045 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 [2024-10-23 21:29:38,046 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 449 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:38,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 701 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42776 states. [2024-10-23 21:29:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42776 to 41032. [2024-10-23 21:29:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41032 states, 41031 states have (on average 1.1225171212010432) internal successors, (46058), 41031 states have internal predecessors, (46058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41032 states to 41032 states and 46058 transitions. [2024-10-23 21:29:38,735 INFO L78 Accepts]: Start accepts. Automaton has 41032 states and 46058 transitions. Word has length 346 [2024-10-23 21:29:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:38,736 INFO L471 AbstractCegarLoop]: Abstraction has 41032 states and 46058 transitions. [2024-10-23 21:29:38,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 41032 states and 46058 transitions. [2024-10-23 21:29:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-23 21:29:38,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:38,746 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:38,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:29:38,746 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash 341974882, now seen corresponding path program 1 times [2024-10-23 21:29:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628518266] [2024-10-23 21:29:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:38,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:38,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628518266] [2024-10-23 21:29:38,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628518266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:38,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:38,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:38,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618001686] [2024-10-23 21:29:38,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:38,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:38,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:38,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:38,979 INFO L87 Difference]: Start difference. First operand 41032 states and 46058 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:40,551 INFO L93 Difference]: Finished difference Result 91425 states and 102895 transitions. [2024-10-23 21:29:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 390 [2024-10-23 21:29:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:40,606 INFO L225 Difference]: With dead ends: 91425 [2024-10-23 21:29:40,606 INFO L226 Difference]: Without dead ends: 49965 [2024-10-23 21:29:40,637 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 [2024-10-23 21:29:40,638 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 440 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:40,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 724 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:29:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49965 states. [2024-10-23 21:29:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49965 to 49958. [2024-10-23 21:29:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49958 states, 49957 states have (on average 1.1129571431431031) internal successors, (55600), 49957 states have internal predecessors, (55600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49958 states to 49958 states and 55600 transitions. [2024-10-23 21:29:41,661 INFO L78 Accepts]: Start accepts. Automaton has 49958 states and 55600 transitions. Word has length 390 [2024-10-23 21:29:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:41,661 INFO L471 AbstractCegarLoop]: Abstraction has 49958 states and 55600 transitions. [2024-10-23 21:29:41,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 49958 states and 55600 transitions. [2024-10-23 21:29:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-10-23 21:29:41,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:41,673 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:41,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:29:41,673 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:41,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash -215175361, now seen corresponding path program 1 times [2024-10-23 21:29:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788216721] [2024-10-23 21:29:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 21:29:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788216721] [2024-10-23 21:29:42,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788216721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39426913] [2024-10-23 21:29:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:42,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:42,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:29:42,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:29:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:42,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:29:42,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 21:29:42,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-23 21:29:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39426913] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:43,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:29:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:29:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183576061] [2024-10-23 21:29:43,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:43,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:29:43,343 INFO L87 Difference]: Start difference. First operand 49958 states and 55600 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:46,011 INFO L93 Difference]: Finished difference Result 120771 states and 134196 transitions. [2024-10-23 21:29:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 393 [2024-10-23 21:29:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:46,232 INFO L225 Difference]: With dead ends: 120771 [2024-10-23 21:29:46,232 INFO L226 Difference]: Without dead ends: 69945 [2024-10-23 21:29:46,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:29:46,259 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 859 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:46,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 141 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:29:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69945 states. [2024-10-23 21:29:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69945 to 67817. [2024-10-23 21:29:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67817 states, 67816 states have (on average 1.0979119971688098) internal successors, (74456), 67816 states have internal predecessors, (74456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67817 states to 67817 states and 74456 transitions. [2024-10-23 21:29:47,304 INFO L78 Accepts]: Start accepts. Automaton has 67817 states and 74456 transitions. Word has length 393 [2024-10-23 21:29:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:47,305 INFO L471 AbstractCegarLoop]: Abstraction has 67817 states and 74456 transitions. [2024-10-23 21:29:47,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 67817 states and 74456 transitions. [2024-10-23 21:29:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-10-23 21:29:47,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:47,316 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:47,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:29:47,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 21:29:47,518 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:47,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2070346267, now seen corresponding path program 1 times [2024-10-23 21:29:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968262676] [2024-10-23 21:29:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:48,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:48,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968262676] [2024-10-23 21:29:48,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968262676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:48,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172533490] [2024-10-23 21:29:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:48,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:48,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:48,184 INFO L87 Difference]: Start difference. First operand 67817 states and 74456 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:49,815 INFO L93 Difference]: Finished difference Result 139462 states and 153017 transitions. [2024-10-23 21:29:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 423 [2024-10-23 21:29:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:49,893 INFO L225 Difference]: With dead ends: 139462 [2024-10-23 21:29:49,893 INFO L226 Difference]: Without dead ends: 71646 [2024-10-23 21:29:49,938 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 [2024-10-23 21:29:49,939 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 357 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:49,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 347 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:29:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71646 states. [2024-10-23 21:29:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71646 to 70790. [2024-10-23 21:29:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70790 states, 70789 states have (on average 1.0959894898924973) internal successors, (77584), 70789 states have internal predecessors, (77584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70790 states to 70790 states and 77584 transitions. [2024-10-23 21:29:50,719 INFO L78 Accepts]: Start accepts. Automaton has 70790 states and 77584 transitions. Word has length 423 [2024-10-23 21:29:50,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:50,720 INFO L471 AbstractCegarLoop]: Abstraction has 70790 states and 77584 transitions. [2024-10-23 21:29:50,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 70790 states and 77584 transitions. [2024-10-23 21:29:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-10-23 21:29:50,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:50,731 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:50,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:29:50,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:50,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 763362635, now seen corresponding path program 1 times [2024-10-23 21:29:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:50,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524613276] [2024-10-23 21:29:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:50,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524613276] [2024-10-23 21:29:51,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524613276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:51,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:51,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469303619] [2024-10-23 21:29:51,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:51,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:51,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:51,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:51,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:51,169 INFO L87 Difference]: Start difference. First operand 70790 states and 77584 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:52,864 INFO L93 Difference]: Finished difference Result 148383 states and 162923 transitions. [2024-10-23 21:29:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 432 [2024-10-23 21:29:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:52,942 INFO L225 Difference]: With dead ends: 148383 [2024-10-23 21:29:52,942 INFO L226 Difference]: Without dead ends: 76740 [2024-10-23 21:29:52,980 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 [2024-10-23 21:29:52,981 INFO L432 NwaCegarLoop]: 584 mSDtfsCounter, 448 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:52,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 608 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:29:53,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76740 states. [2024-10-23 21:29:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76740 to 66505. [2024-10-23 21:29:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66505 states, 66504 states have (on average 1.0966708769397329) internal successors, (72933), 66504 states have internal predecessors, (72933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66505 states to 66505 states and 72933 transitions. [2024-10-23 21:29:54,156 INFO L78 Accepts]: Start accepts. Automaton has 66505 states and 72933 transitions. Word has length 432 [2024-10-23 21:29:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:54,157 INFO L471 AbstractCegarLoop]: Abstraction has 66505 states and 72933 transitions. [2024-10-23 21:29:54,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 66505 states and 72933 transitions. [2024-10-23 21:29:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-10-23 21:29:54,167 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:54,167 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:54,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:29:54,167 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:54,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash -585503832, now seen corresponding path program 1 times [2024-10-23 21:29:54,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:54,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123885206] [2024-10-23 21:29:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:54,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123885206] [2024-10-23 21:29:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123885206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896105062] [2024-10-23 21:29:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:54,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:54,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:54,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:29:54,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:29:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:55,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:29:55,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-10-23 21:29:55,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-10-23 21:29:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896105062] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:29:56,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:29:56,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-23 21:29:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460200675] [2024-10-23 21:29:56,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:29:56,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 21:29:56,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 21:29:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:29:56,470 INFO L87 Difference]: Start difference. First operand 66505 states and 72933 transitions. Second operand has 9 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:08,907 INFO L93 Difference]: Finished difference Result 180300 states and 197150 transitions. [2024-10-23 21:30:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 21:30:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 0 states have call successors, (0), 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 437 [2024-10-23 21:30:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:09,046 INFO L225 Difference]: With dead ends: 180300 [2024-10-23 21:30:09,047 INFO L226 Difference]: Without dead ends: 112946 [2024-10-23 21:30:09,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2024-10-23 21:30:09,075 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 8690 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 15852 mSolverCounterSat, 1893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8690 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 17745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1893 IncrementalHoareTripleChecker+Valid, 15852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:09,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8690 Valid, 526 Invalid, 17745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1893 Valid, 15852 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-10-23 21:30:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112946 states. [2024-10-23 21:30:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112946 to 97576. [2024-10-23 21:30:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97576 states, 97575 states have (on average 1.087050986420702) internal successors, (106069), 97575 states have internal predecessors, (106069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97576 states to 97576 states and 106069 transitions. [2024-10-23 21:30:10,714 INFO L78 Accepts]: Start accepts. Automaton has 97576 states and 106069 transitions. Word has length 437 [2024-10-23 21:30:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:10,715 INFO L471 AbstractCegarLoop]: Abstraction has 97576 states and 106069 transitions. [2024-10-23 21:30:10,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 97576 states and 106069 transitions. [2024-10-23 21:30:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-10-23 21:30:10,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:10,733 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:10,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:30:10,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-23 21:30:10,937 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:10,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1651359506, now seen corresponding path program 1 times [2024-10-23 21:30:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657825217] [2024-10-23 21:30:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657825217] [2024-10-23 21:30:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657825217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042525230] [2024-10-23 21:30:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:11,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:11,825 INFO L87 Difference]: Start difference. First operand 97576 states and 106069 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:14,251 INFO L93 Difference]: Finished difference Result 107818 states and 116830 transitions. [2024-10-23 21:30:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:14,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 470 [2024-10-23 21:30:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:14,379 INFO L225 Difference]: With dead ends: 107818 [2024-10-23 21:30:14,379 INFO L226 Difference]: Without dead ends: 107391 [2024-10-23 21:30:14,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:14,402 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 426 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:14,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 338 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:30:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107391 states. [2024-10-23 21:30:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107391 to 97576. [2024-10-23 21:30:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97576 states, 97575 states have (on average 1.0870407378939277) internal successors, (106068), 97575 states have internal predecessors, (106068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97576 states to 97576 states and 106068 transitions. [2024-10-23 21:30:15,697 INFO L78 Accepts]: Start accepts. Automaton has 97576 states and 106068 transitions. Word has length 470 [2024-10-23 21:30:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:15,698 INFO L471 AbstractCegarLoop]: Abstraction has 97576 states and 106068 transitions. [2024-10-23 21:30:15,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 97576 states and 106068 transitions. [2024-10-23 21:30:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-10-23 21:30:15,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:15,704 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:15,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:30:15,705 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:15,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 674365415, now seen corresponding path program 1 times [2024-10-23 21:30:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575349903] [2024-10-23 21:30:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:15,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-10-23 21:30:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:16,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575349903] [2024-10-23 21:30:16,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575349903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:16,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:16,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040031115] [2024-10-23 21:30:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:16,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:16,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:16,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:16,357 INFO L87 Difference]: Start difference. First operand 97576 states and 106068 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:17,385 INFO L93 Difference]: Finished difference Result 188334 states and 204403 transitions. [2024-10-23 21:30:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:17,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 486 [2024-10-23 21:30:17,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:17,486 INFO L225 Difference]: With dead ends: 188334 [2024-10-23 21:30:17,486 INFO L226 Difference]: Without dead ends: 91608 [2024-10-23 21:30:17,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:17,539 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:17,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 92 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:30:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91608 states. [2024-10-23 21:30:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91608 to 91591. [2024-10-23 21:30:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91591 states, 91590 states have (on average 1.0825308439786003) internal successors, (99149), 91590 states have internal predecessors, (99149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91591 states to 91591 states and 99149 transitions. [2024-10-23 21:30:18,895 INFO L78 Accepts]: Start accepts. Automaton has 91591 states and 99149 transitions. Word has length 486 [2024-10-23 21:30:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:18,895 INFO L471 AbstractCegarLoop]: Abstraction has 91591 states and 99149 transitions. [2024-10-23 21:30:18,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 91591 states and 99149 transitions. [2024-10-23 21:30:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-10-23 21:30:18,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:18,903 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:18,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:30:18,903 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:18,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 855219076, now seen corresponding path program 1 times [2024-10-23 21:30:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294275484] [2024-10-23 21:30:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-23 21:30:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294275484] [2024-10-23 21:30:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294275484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:19,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187429121] [2024-10-23 21:30:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:19,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:19,256 INFO L87 Difference]: Start difference. First operand 91591 states and 99149 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:21,223 INFO L93 Difference]: Finished difference Result 181051 states and 196041 transitions. [2024-10-23 21:30:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 500 [2024-10-23 21:30:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:21,327 INFO L225 Difference]: With dead ends: 181051 [2024-10-23 21:30:21,328 INFO L226 Difference]: Without dead ends: 90310 [2024-10-23 21:30:21,388 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 [2024-10-23 21:30:21,388 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 431 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:21,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 683 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90310 states.