./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_label06.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_label06.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 e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:28:52,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:28:52,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:28:52,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:28:52,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:28:52,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:28:52,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:28:52,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:28:52,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:28:52,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:28:52,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:28:52,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:28:52,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:28:52,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:28:52,301 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:28:52,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:28:52,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:28:52,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:28:52,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:28:52,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:28:52,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:28:52,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:28:52,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:28:52,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:28:52,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:28:52,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:28:52,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:28:52,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:28:52,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:28:52,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:28:52,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:28:52,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:28:52,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:28:52,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:28:52,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:28:52,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:28:52,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:28:52,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:28:52,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:28:52,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:28:52,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:28:52,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:28:52,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 [2024-10-23 21:28:52,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:28:52,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:28:52,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:28:52,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:28:52,595 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:28:52,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-10-23 21:28:54,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:28:54,420 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:28:54,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2024-10-23 21:28:54,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad538d55/a71bc05d76d1471abc2132ab649be4e8/FLAG5b93ef364 [2024-10-23 21:28:54,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad538d55/a71bc05d76d1471abc2132ab649be4e8 [2024-10-23 21:28:54,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:28:54,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:28:54,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:28:54,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:28:54,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:28:54,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:28:54" (1/1) ... [2024-10-23 21:28:54,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418ae95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:54, skipping insertion in model container [2024-10-23 21:28:54,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:28:54" (1/1) ... [2024-10-23 21:28:54,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:28:55,009 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_label06.c[4782,4795] [2024-10-23 21:28:55,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:28:55,579 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:28:55,604 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_label06.c[4782,4795] [2024-10-23 21:28:55,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:28:55,924 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:28:55,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55 WrapperNode [2024-10-23 21:28:55,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:28:55,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:28:55,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:28:55,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:28:55,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:55,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,226 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:28:56,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:28:56,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:28:56,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:28:56,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:28:56,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,530 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 21:28:56,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:28:56,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:28:56,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:28:56,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:28:56,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (1/1) ... [2024-10-23 21:28:56,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:28:56,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:28:56,850 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 21:28:56,856 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 21:28:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:28:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:28:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:28:56,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:28:56,981 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:28:56,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:29:00,281 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:29:00,281 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:29:00,335 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:29:00,335 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:29:00,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:29:00 BoogieIcfgContainer [2024-10-23 21:29:00,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:29:00,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:29:00,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:29:00,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:29:00,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:28:54" (1/3) ... [2024-10-23 21:29:00,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7503a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:29:00, skipping insertion in model container [2024-10-23 21:29:00,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:28:55" (2/3) ... [2024-10-23 21:29:00,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7503a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:29:00, skipping insertion in model container [2024-10-23 21:29:00,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:29:00" (3/3) ... [2024-10-23 21:29:00,345 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2024-10-23 21:29:00,364 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:29:00,364 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:29:00,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:29:00,456 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;@ef90021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:29:00,457 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:29:00,464 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 21:29:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-23 21:29:00,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:00,473 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] [2024-10-23 21:29:00,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:00,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash -484703600, now seen corresponding path program 1 times [2024-10-23 21:29:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179951515] [2024-10-23 21:29:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:00,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:00,678 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 21:29:00,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:00,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179951515] [2024-10-23 21:29:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179951515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:00,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967808536] [2024-10-23 21:29:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:00,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:29:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:00,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:29:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:29:00,719 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 21:29:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:00,794 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:29:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:29:00,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-23 21:29:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:00,812 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:29:00,812 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:29:00,816 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 21:29:00,820 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 21:29:00,821 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 21:29:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:29:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:29:00,889 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 21:29:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:29:00,893 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 30 [2024-10-23 21:29:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:00,894 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:29:00,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 21:29:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:29:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-23 21:29:00,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:00,895 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] [2024-10-23 21:29:00,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:29:00,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:00,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash 610002122, now seen corresponding path program 1 times [2024-10-23 21:29:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:00,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007344786] [2024-10-23 21:29:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:01,046 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 21:29:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007344786] [2024-10-23 21:29:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007344786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:01,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:01,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095452410] [2024-10-23 21:29:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:01,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:01,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:01,052 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 21:29:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:03,497 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2024-10-23 21:29:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-23 21:29:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:03,503 INFO L225 Difference]: With dead ends: 1522 [2024-10-23 21:29:03,504 INFO L226 Difference]: Without dead ends: 997 [2024-10-23 21:29:03,505 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 21:29:03,506 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 480 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:03,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:29:03,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-10-23 21:29:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2024-10-23 21:29:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 21:29:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2024-10-23 21:29:03,550 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 30 [2024-10-23 21:29:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:03,550 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2024-10-23 21:29:03,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 21:29:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2024-10-23 21:29:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-23 21:29:03,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:03,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:03,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:29:03,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:03,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash 880928828, now seen corresponding path program 1 times [2024-10-23 21:29:03,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:03,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627251437] [2024-10-23 21:29:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:03,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:03,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:03,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627251437] [2024-10-23 21:29:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627251437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:03,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:03,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134335783] [2024-10-23 21:29:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:03,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:03,857 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:06,003 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2024-10-23 21:29:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-23 21:29:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:06,011 INFO L225 Difference]: With dead ends: 2840 [2024-10-23 21:29:06,012 INFO L226 Difference]: Without dead ends: 1860 [2024-10-23 21:29:06,014 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 21:29:06,017 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 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 21:29:06,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:29:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2024-10-23 21:29:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2024-10-23 21:29:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 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 21:29:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2024-10-23 21:29:06,059 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 95 [2024-10-23 21:29:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:06,059 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2024-10-23 21:29:06,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2024-10-23 21:29:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 21:29:06,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:06,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:06,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:29:06,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:06,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 710160551, now seen corresponding path program 1 times [2024-10-23 21:29:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064309238] [2024-10-23 21:29:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064309238] [2024-10-23 21:29:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064309238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551048046] [2024-10-23 21:29:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:06,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:06,537 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:08,460 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2024-10-23 21:29:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-23 21:29:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:08,470 INFO L225 Difference]: With dead ends: 4590 [2024-10-23 21:29:08,471 INFO L226 Difference]: Without dead ends: 2735 [2024-10-23 21:29:08,474 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 21:29:08,475 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:08,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:29:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2024-10-23 21:29:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2024-10-23 21:29:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 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 21:29:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2024-10-23 21:29:08,551 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 135 [2024-10-23 21:29:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:08,552 INFO L471 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2024-10-23 21:29:08,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2024-10-23 21:29:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-23 21:29:08,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:08,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:08,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:29:08,561 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:08,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash 944997302, now seen corresponding path program 1 times [2024-10-23 21:29:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83993412] [2024-10-23 21:29:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83993412] [2024-10-23 21:29:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83993412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:08,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:08,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:29:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745195640] [2024-10-23 21:29:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:08,747 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:10,502 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2024-10-23 21:29:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-10-23 21:29:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:10,515 INFO L225 Difference]: With dead ends: 6708 [2024-10-23 21:29:10,516 INFO L226 Difference]: Without dead ends: 3994 [2024-10-23 21:29:10,520 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 21:29:10,522 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 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, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:10,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:29:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-23 21:29:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2024-10-23 21:29:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 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 21:29:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2024-10-23 21:29:10,581 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 141 [2024-10-23 21:29:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:10,582 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2024-10-23 21:29:10,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2024-10-23 21:29:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-23 21:29:10,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:10,585 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, 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] [2024-10-23 21:29:10,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:29:10,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:10,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1831495645, now seen corresponding path program 1 times [2024-10-23 21:29:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065072706] [2024-10-23 21:29:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:29:11,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065072706] [2024-10-23 21:29:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065072706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:11,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:11,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 21:29:11,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569534710] [2024-10-23 21:29:11,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:11,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:29:11,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:29:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:29:11,032 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 21:29:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:13,500 INFO L93 Difference]: Finished difference Result 8004 states and 10507 transitions. [2024-10-23 21:29:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2024-10-23 21:29:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:13,516 INFO L225 Difference]: With dead ends: 8004 [2024-10-23 21:29:13,516 INFO L226 Difference]: Without dead ends: 4864 [2024-10-23 21:29:13,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:29:13,525 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 593 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:13,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 924 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:29:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2024-10-23 21:29:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 4851. [2024-10-23 21:29:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 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 21:29:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2024-10-23 21:29:13,610 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 178 [2024-10-23 21:29:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:13,612 INFO L471 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2024-10-23 21:29:13,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 21:29:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2024-10-23 21:29:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-23 21:29:13,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:13,614 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, 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] [2024-10-23 21:29:13,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:29:13,615 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:13,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash -134338676, now seen corresponding path program 1 times [2024-10-23 21:29:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647676348] [2024-10-23 21:29:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:29:13,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647676348] [2024-10-23 21:29:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647676348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:13,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:13,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996302075] [2024-10-23 21:29:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:13,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:13,832 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:15,979 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2024-10-23 21:29:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2024-10-23 21:29:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:16,000 INFO L225 Difference]: With dead ends: 12248 [2024-10-23 21:29:16,000 INFO L226 Difference]: Without dead ends: 7398 [2024-10-23 21:29:16,007 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 21:29:16,008 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 416 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:16,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:29:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2024-10-23 21:29:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2024-10-23 21:29:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 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 21:29:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2024-10-23 21:29:16,107 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 184 [2024-10-23 21:29:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:16,107 INFO L471 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2024-10-23 21:29:16,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2024-10-23 21:29:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-23 21:29:16,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:16,110 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, 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] [2024-10-23 21:29:16,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:29:16,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:16,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -576344346, now seen corresponding path program 1 times [2024-10-23 21:29:16,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:16,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615174280] [2024-10-23 21:29:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:16,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615174280] [2024-10-23 21:29:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615174280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:16,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:16,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:16,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509947720] [2024-10-23 21:29:16,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:16,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:16,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:16,250 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 21:29:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:18,162 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2024-10-23 21:29:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 197 [2024-10-23 21:29:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:18,185 INFO L225 Difference]: With dead ends: 13480 [2024-10-23 21:29:18,186 INFO L226 Difference]: Without dead ends: 8656 [2024-10-23 21:29:18,192 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 21:29:18,192 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 452 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:18,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:29:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2024-10-23 21:29:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2024-10-23 21:29:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 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 21:29:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2024-10-23 21:29:18,320 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 197 [2024-10-23 21:29:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:18,321 INFO L471 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2024-10-23 21:29:18,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 21:29:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2024-10-23 21:29:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-23 21:29:18,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:18,325 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, 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] [2024-10-23 21:29:18,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:29:18,326 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:18,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 750637180, now seen corresponding path program 1 times [2024-10-23 21:29:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587881671] [2024-10-23 21:29:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:18,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587881671] [2024-10-23 21:29:18,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587881671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:18,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:18,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933495865] [2024-10-23 21:29:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:18,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:18,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:18,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:18,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:18,548 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:20,694 INFO L93 Difference]: Finished difference Result 18606 states and 23434 transitions. [2024-10-23 21:29:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:20,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2024-10-23 21:29:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:20,713 INFO L225 Difference]: With dead ends: 18606 [2024-10-23 21:29:20,714 INFO L226 Difference]: Without dead ends: 10378 [2024-10-23 21:29:20,722 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 21:29:20,722 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 469 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:20,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1017 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:29:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2024-10-23 21:29:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10370. [2024-10-23 21:29:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10370 states, 10369 states have (on average 1.2060950911370432) internal successors, (12506), 10369 states have internal predecessors, (12506), 0 states have call successors, (0), 0 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 21:29:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10370 states to 10370 states and 12506 transitions. [2024-10-23 21:29:20,852 INFO L78 Accepts]: Start accepts. Automaton has 10370 states and 12506 transitions. Word has length 246 [2024-10-23 21:29:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:20,853 INFO L471 AbstractCegarLoop]: Abstraction has 10370 states and 12506 transitions. [2024-10-23 21:29:20,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:29:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10370 states and 12506 transitions. [2024-10-23 21:29:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-10-23 21:29:20,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:20,857 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:20,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:29:20,857 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:20,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1836235263, now seen corresponding path program 1 times [2024-10-23 21:29:20,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:20,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767636029] [2024-10-23 21:29:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 21:29:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767636029] [2024-10-23 21:29:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767636029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872047423] [2024-10-23 21:29:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:21,221 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 21:29:21,223 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 21:29:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:21,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:29:21,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 21:29:21,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 21:29:21,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872047423] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:21,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:29:21,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:29:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463700642] [2024-10-23 21:29:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:21,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:29:21,954 INFO L87 Difference]: Start difference. First operand 10370 states and 12506 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 21:29:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:25,393 INFO L93 Difference]: Finished difference Result 32690 states and 39750 transitions. [2024-10-23 21:29:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 254 [2024-10-23 21:29:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:25,437 INFO L225 Difference]: With dead ends: 32690 [2024-10-23 21:29:25,437 INFO L226 Difference]: Without dead ends: 21460 [2024-10-23 21:29:25,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 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 21:29:25,453 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1138 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:25,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 140 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:29:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2024-10-23 21:29:25,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 21458. [2024-10-23 21:29:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 21457 states have (on average 1.1587826816423545) internal successors, (24864), 21457 states have internal predecessors, (24864), 0 states have call successors, (0), 0 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 21:29:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 24864 transitions. [2024-10-23 21:29:25,847 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 24864 transitions. Word has length 254 [2024-10-23 21:29:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:25,848 INFO L471 AbstractCegarLoop]: Abstraction has 21458 states and 24864 transitions. [2024-10-23 21:29:25,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 21:29:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 24864 transitions. [2024-10-23 21:29:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-10-23 21:29:25,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:25,854 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:25,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:29:26,055 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,SelfDestructingSolverStorable9 [2024-10-23 21:29:26,055 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:26,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1441451129, now seen corresponding path program 1 times [2024-10-23 21:29:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312656435] [2024-10-23 21:29:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:29:26,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312656435] [2024-10-23 21:29:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312656435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:26,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641934399] [2024-10-23 21:29:26,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:26,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:26,325 INFO L87 Difference]: Start difference. First operand 21458 states and 24864 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 21:29:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:28,011 INFO L93 Difference]: Finished difference Result 47591 states and 55278 transitions. [2024-10-23 21:29:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 267 [2024-10-23 21:29:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:28,055 INFO L225 Difference]: With dead ends: 47591 [2024-10-23 21:29:28,055 INFO L226 Difference]: Without dead ends: 26134 [2024-10-23 21:29:28,077 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 21:29:28,078 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 373 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:28,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 855 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26134 states. [2024-10-23 21:29:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26134 to 25709. [2024-10-23 21:29:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25708 states have (on average 1.143107203983196) internal successors, (29387), 25708 states have internal predecessors, (29387), 0 states have call successors, (0), 0 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 21:29:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 29387 transitions. [2024-10-23 21:29:28,535 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 29387 transitions. Word has length 267 [2024-10-23 21:29:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:28,535 INFO L471 AbstractCegarLoop]: Abstraction has 25709 states and 29387 transitions. [2024-10-23 21:29:28,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 21:29:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 29387 transitions. [2024-10-23 21:29:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-23 21:29:28,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:28,542 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, 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, 1, 1, 1, 1, 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 21:29:28,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:29:28,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:28,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1520496576, now seen corresponding path program 1 times [2024-10-23 21:29:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415121102] [2024-10-23 21:29:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:28,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:29:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415121102] [2024-10-23 21:29:29,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415121102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:29,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:29:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448598660] [2024-10-23 21:29:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:29,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:29:29,045 INFO L87 Difference]: Start difference. First operand 25709 states and 29387 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 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 21:29:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:31,958 INFO L93 Difference]: Finished difference Result 67189 states and 77163 transitions. [2024-10-23 21:29:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 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 290 [2024-10-23 21:29:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:32,011 INFO L225 Difference]: With dead ends: 67189 [2024-10-23 21:29:32,011 INFO L226 Difference]: Without dead ends: 38067 [2024-10-23 21:29:32,029 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 21:29:32,030 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 867 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:32,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 344 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:29:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38067 states. [2024-10-23 21:29:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38067 to 34624. [2024-10-23 21:29:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34624 states, 34623 states have (on average 1.1460589781359212) internal successors, (39680), 34623 states have internal predecessors, (39680), 0 states have call successors, (0), 0 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 21:29:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34624 states to 34624 states and 39680 transitions. [2024-10-23 21:29:32,445 INFO L78 Accepts]: Start accepts. Automaton has 34624 states and 39680 transitions. Word has length 290 [2024-10-23 21:29:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:32,446 INFO L471 AbstractCegarLoop]: Abstraction has 34624 states and 39680 transitions. [2024-10-23 21:29:32,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 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 21:29:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 34624 states and 39680 transitions. [2024-10-23 21:29:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-23 21:29:32,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:32,454 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:32,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:29:32,455 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:32,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash 9756323, now seen corresponding path program 1 times [2024-10-23 21:29:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497574769] [2024-10-23 21:29:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 21:29:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497574769] [2024-10-23 21:29:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497574769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:32,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:32,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906117894] [2024-10-23 21:29:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:32,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:32,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:32,848 INFO L87 Difference]: Start difference. First operand 34624 states and 39680 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 21:29:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:34,737 INFO L93 Difference]: Finished difference Result 83320 states and 95564 transitions. [2024-10-23 21:29:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 305 [2024-10-23 21:29:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:34,796 INFO L225 Difference]: With dead ends: 83320 [2024-10-23 21:29:34,796 INFO L226 Difference]: Without dead ends: 45720 [2024-10-23 21:29:34,827 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 21:29:34,828 INFO L432 NwaCegarLoop]: 730 mSDtfsCounter, 362 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:34,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 799 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:29:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45720 states. [2024-10-23 21:29:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45720 to 45285. [2024-10-23 21:29:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45285 states, 45284 states have (on average 1.1171053793834467) internal successors, (50587), 45284 states have internal predecessors, (50587), 0 states have call successors, (0), 0 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 21:29:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45285 states to 45285 states and 50587 transitions. [2024-10-23 21:29:35,388 INFO L78 Accepts]: Start accepts. Automaton has 45285 states and 50587 transitions. Word has length 305 [2024-10-23 21:29:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:35,389 INFO L471 AbstractCegarLoop]: Abstraction has 45285 states and 50587 transitions. [2024-10-23 21:29:35,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 21:29:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 45285 states and 50587 transitions. [2024-10-23 21:29:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-23 21:29:35,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:35,393 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:29:35,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:29:35,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:35,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1750908446, now seen corresponding path program 1 times [2024-10-23 21:29:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917246509] [2024-10-23 21:29:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:35,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 295 proven. 214 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 21:29:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917246509] [2024-10-23 21:29:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917246509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578489188] [2024-10-23 21:29:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:35,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:35,797 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 21:29:35,799 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 21:29:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:36,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:29:36,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 337 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-23 21:29:36,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-23 21:29:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578489188] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:36,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:29:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-10-23 21:29:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809855717] [2024-10-23 21:29:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:36,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:29:36,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:36,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:29:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:29:36,495 INFO L87 Difference]: Start difference. First operand 45285 states and 50587 transitions. Second operand has 4 states, 4 states have (on average 57.75) 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 21:29:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:39,301 INFO L93 Difference]: Finished difference Result 109316 states and 122119 transitions. [2024-10-23 21:29:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:29:39,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) 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 328 [2024-10-23 21:29:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:39,359 INFO L225 Difference]: With dead ends: 109316 [2024-10-23 21:29:39,360 INFO L226 Difference]: Without dead ends: 64032 [2024-10-23 21:29:39,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:29:39,373 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 889 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:39,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 169 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:29:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64032 states. [2024-10-23 21:29:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64032 to 60202. [2024-10-23 21:29:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60202 states, 60201 states have (on average 1.1185196259198351) internal successors, (67336), 60201 states have internal predecessors, (67336), 0 states have call successors, (0), 0 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 21:29:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60202 states to 60202 states and 67336 transitions. [2024-10-23 21:29:39,996 INFO L78 Accepts]: Start accepts. Automaton has 60202 states and 67336 transitions. Word has length 328 [2024-10-23 21:29:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:39,996 INFO L471 AbstractCegarLoop]: Abstraction has 60202 states and 67336 transitions. [2024-10-23 21:29:39,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) 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 21:29:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 60202 states and 67336 transitions. [2024-10-23 21:29:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-10-23 21:29:40,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:40,002 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, 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, 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] [2024-10-23 21:29:40,245 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2024-10-23 21:29:40,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:29:40,246 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,SelfDestructingSolverStorable13 [2024-10-23 21:29:40,246 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:40,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash 257027118, now seen corresponding path program 1 times [2024-10-23 21:29:40,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:40,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075277957] [2024-10-23 21:29:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:40,249 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] The stream was forcibly closed: stdIn [2024-10-23 21:29:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-23 21:29:40,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075277957] [2024-10-23 21:29:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075277957] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:40,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532546288] [2024-10-23 21:29:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:40,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:40,871 INFO L87 Difference]: Start difference. First operand 60202 states and 67336 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 21:29:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:42,596 INFO L93 Difference]: Finished difference Result 134018 states and 150108 transitions. [2024-10-23 21:29:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:42,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 358 [2024-10-23 21:29:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:42,675 INFO L225 Difference]: With dead ends: 134018 [2024-10-23 21:29:42,675 INFO L226 Difference]: Without dead ends: 70838 [2024-10-23 21:29:42,712 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 21:29:42,713 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 390 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:42,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 796 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:29:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70838 states. [2024-10-23 21:29:43,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70838 to 59738. [2024-10-23 21:29:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59738 states, 59737 states have (on average 1.1137653380651857) internal successors, (66533), 59737 states have internal predecessors, (66533), 0 states have call successors, (0), 0 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 21:29:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59738 states to 59738 states and 66533 transitions. [2024-10-23 21:29:43,578 INFO L78 Accepts]: Start accepts. Automaton has 59738 states and 66533 transitions. Word has length 358 [2024-10-23 21:29:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:43,579 INFO L471 AbstractCegarLoop]: Abstraction has 59738 states and 66533 transitions. [2024-10-23 21:29:43,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 21:29:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 59738 states and 66533 transitions. [2024-10-23 21:29:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-10-23 21:29:43,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:43,735 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, 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, 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] [2024-10-23 21:29:43,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:29:43,735 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:43,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -539122270, now seen corresponding path program 1 times [2024-10-23 21:29:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047061405] [2024-10-23 21:29:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-23 21:29:44,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:44,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047061405] [2024-10-23 21:29:44,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047061405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:29:44,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:29:44,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:29:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261061955] [2024-10-23 21:29:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:29:44,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:29:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:29:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:29:44,278 INFO L87 Difference]: Start difference. First operand 59738 states and 66533 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 21:29:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:46,065 INFO L93 Difference]: Finished difference Result 130128 states and 144807 transitions. [2024-10-23 21:29:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:29:46,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 399 [2024-10-23 21:29:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:46,141 INFO L225 Difference]: With dead ends: 130128 [2024-10-23 21:29:46,141 INFO L226 Difference]: Without dead ends: 69960 [2024-10-23 21:29:46,172 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 21:29:46,172 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 421 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:46,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 280 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:29:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69960 states. [2024-10-23 21:29:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69960 to 66124. [2024-10-23 21:29:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66124 states, 66123 states have (on average 1.1111262344418735) internal successors, (73471), 66123 states have internal predecessors, (73471), 0 states have call successors, (0), 0 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 21:29:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66124 states to 66124 states and 73471 transitions. [2024-10-23 21:29:47,106 INFO L78 Accepts]: Start accepts. Automaton has 66124 states and 73471 transitions. Word has length 399 [2024-10-23 21:29:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:47,106 INFO L471 AbstractCegarLoop]: Abstraction has 66124 states and 73471 transitions. [2024-10-23 21:29:47,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 21:29:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 66124 states and 73471 transitions. [2024-10-23 21:29:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-10-23 21:29:47,115 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:47,115 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, 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, 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 21:29:47,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:29:47,116 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:29:47,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:29:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1282978590, now seen corresponding path program 1 times [2024-10-23 21:29:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:29:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891092864] [2024-10-23 21:29:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:29:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:29:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:29:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891092864] [2024-10-23 21:29:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891092864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:29:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436858194] [2024-10-23 21:29:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:29:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:29:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:29:48,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:29:48,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:29:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:29:48,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:29:48,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:29:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-23 21:29:48,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:29:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-23 21:29:49,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436858194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:29:49,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:29:49,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-23 21:29:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120274924] [2024-10-23 21:29:49,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:29:49,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 21:29:49,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:29:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 21:29:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:29:49,665 INFO L87 Difference]: Start difference. First operand 66124 states and 73471 transitions. Second operand has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 21:29:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:29:58,284 INFO L93 Difference]: Finished difference Result 183770 states and 202999 transitions. [2024-10-23 21:29:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-23 21:29:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 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 410 [2024-10-23 21:29:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:29:58,412 INFO L225 Difference]: With dead ends: 183770 [2024-10-23 21:29:58,412 INFO L226 Difference]: Without dead ends: 111258 [2024-10-23 21:29:58,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-10-23 21:29:58,452 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 8286 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 7916 mSolverCounterSat, 2589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8286 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 10505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2589 IncrementalHoareTripleChecker+Valid, 7916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:29:58,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8286 Valid, 286 Invalid, 10505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2589 Valid, 7916 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-10-23 21:29:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111258 states. [2024-10-23 21:29:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111258 to 88616. [2024-10-23 21:29:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88616 states, 88615 states have (on average 1.0832703266941264) internal successors, (95994), 88615 states have internal predecessors, (95994), 0 states have call successors, (0), 0 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 21:29:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88616 states to 88616 states and 95994 transitions. [2024-10-23 21:29:59,843 INFO L78 Accepts]: Start accepts. Automaton has 88616 states and 95994 transitions. Word has length 410 [2024-10-23 21:29:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:29:59,843 INFO L471 AbstractCegarLoop]: Abstraction has 88616 states and 95994 transitions. [2024-10-23 21:29:59,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 21:29:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 88616 states and 95994 transitions. [2024-10-23 21:29:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-10-23 21:29:59,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:29:59,854 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, 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, 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, 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] [2024-10-23 21:29:59,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:30:00,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:30:00,055 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:00,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1918616243, now seen corresponding path program 1 times [2024-10-23 21:30:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:00,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328522251] [2024-10-23 21:30:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:00,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-23 21:30:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328522251] [2024-10-23 21:30:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328522251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141832558] [2024-10-23 21:30:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:00,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:00,749 INFO L87 Difference]: Start difference. First operand 88616 states and 95994 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 21:30:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:02,322 INFO L93 Difference]: Finished difference Result 174673 states and 189213 transitions. [2024-10-23 21:30:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 496 [2024-10-23 21:30:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:02,414 INFO L225 Difference]: With dead ends: 174673 [2024-10-23 21:30:02,414 INFO L226 Difference]: Without dead ends: 86058 [2024-10-23 21:30:02,462 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 21:30:02,463 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 465 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:02,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 689 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:30:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86058 states. [2024-10-23 21:30:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86058 to 84781. [2024-10-23 21:30:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84781 states, 84780 states have (on average 1.0677754187308328) internal successors, (90526), 84780 states have internal predecessors, (90526), 0 states have call successors, (0), 0 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 21:30:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84781 states to 84781 states and 90526 transitions. [2024-10-23 21:30:03,964 INFO L78 Accepts]: Start accepts. Automaton has 84781 states and 90526 transitions. Word has length 496 [2024-10-23 21:30:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:03,965 INFO L471 AbstractCegarLoop]: Abstraction has 84781 states and 90526 transitions. [2024-10-23 21:30:03,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 21:30:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 84781 states and 90526 transitions. [2024-10-23 21:30:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-10-23 21:30:03,976 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:03,976 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:03,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:30:03,976 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:03,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash 117453091, now seen corresponding path program 1 times [2024-10-23 21:30:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697791161] [2024-10-23 21:30:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-23 21:30:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:04,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697791161] [2024-10-23 21:30:04,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697791161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:04,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:04,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167328605] [2024-10-23 21:30:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:04,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:04,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:04,590 INFO L87 Difference]: Start difference. First operand 84781 states and 90526 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 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 21:30:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:07,219 INFO L93 Difference]: Finished difference Result 192122 states and 204654 transitions. [2024-10-23 21:30:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 570 [2024-10-23 21:30:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:07,338 INFO L225 Difference]: With dead ends: 192122 [2024-10-23 21:30:07,338 INFO L226 Difference]: Without dead ends: 107342 [2024-10-23 21:30:07,366 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 21:30:07,367 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 738 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:07,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 171 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:30:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107342 states.