./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i -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 5d61e8fa49d21946be87d65ea6f560fd70d33fb1241a73bd802d2afa2c954396 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:35:20,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:35:20,307 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:35:20,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:35:20,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:35:20,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:35:20,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:35:20,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:35:20,338 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:35:20,338 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:35:20,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:35:20,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:35:20,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:35:20,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:35:20,345 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:35:20,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:35:20,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:35:20,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:35:20,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:35:20,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:35:20,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:35:20,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:35:20,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:35:20,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:35:20,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:35:20,351 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:35:20,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:35:20,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:35:20,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:35:20,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:35:20,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:35:20,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:35:20,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:35:20,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:35:20,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:35:20,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:35:20,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:35:20,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:35:20,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:35:20,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:35:20,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:35:20,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:35:20,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d61e8fa49d21946be87d65ea6f560fd70d33fb1241a73bd802d2afa2c954396 [2024-11-18 19:35:20,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:35:20,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:35:20,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:35:20,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:35:20,651 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:35:20,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2024-11-18 19:35:22,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:35:22,357 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:35:22,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2024-11-18 19:35:22,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e326ae9/fe3674cce3ed4d038d11e91cb6ac332e/FLAG00739e708 [2024-11-18 19:35:22,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e326ae9/fe3674cce3ed4d038d11e91cb6ac332e [2024-11-18 19:35:22,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:35:22,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:35:22,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:35:22,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:35:22,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:35:22,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:22" (1/1) ... [2024-11-18 19:35:22,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db203dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:22, skipping insertion in model container [2024-11-18 19:35:22,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:22" (1/1) ... [2024-11-18 19:35:22,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:35:22,594 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i[916,929] [2024-11-18 19:35:22,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:35:22,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:35:22,898 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-72.i[916,929] [2024-11-18 19:35:22,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:35:23,008 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:35:23,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23 WrapperNode [2024-11-18 19:35:23,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:35:23,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:35:23,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:35:23,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:35:23,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,110 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 508 [2024-11-18 19:35:23,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:35:23,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:35:23,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:35:23,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:35:23,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,181 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 19:35:23,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:35:23,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:35:23,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:35:23,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:35:23,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (1/1) ... [2024-11-18 19:35:23,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:35:23,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:35:23,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 19:35:23,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 19:35:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:35:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:35:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:35:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:35:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:35:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:35:23,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:35:23,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:35:24,375 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 19:35:24,376 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:35:24,399 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:35:24,401 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:35:24,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:24 BoogieIcfgContainer [2024-11-18 19:35:24,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:35:24,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:35:24,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:35:24,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:35:24,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:35:22" (1/3) ... [2024-11-18 19:35:24,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2111a843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:24, skipping insertion in model container [2024-11-18 19:35:24,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:23" (2/3) ... [2024-11-18 19:35:24,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2111a843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:24, skipping insertion in model container [2024-11-18 19:35:24,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:24" (3/3) ... [2024-11-18 19:35:24,414 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-72.i [2024-11-18 19:35:24,433 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:35:24,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:35:24,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:35:24,519 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;@21904e82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:35:24,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:35:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 142 states have (on average 1.5633802816901408) internal successors, (222), 143 states have internal predecessors, (222), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 19:35:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:35:24,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:24,551 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:24,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:24,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1016908056, now seen corresponding path program 1 times [2024-11-18 19:35:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:24,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953202554] [2024-11-18 19:35:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-18 19:35:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953202554] [2024-11-18 19:35:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953202554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:35:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177703957] [2024-11-18 19:35:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:25,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:35:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:35:25,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:35:25,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:35:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:25,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:35:25,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:35:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-18 19:35:25,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:35:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177703957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:25,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:35:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:35:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880701591] [2024-11-18 19:35:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:25,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:35:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:35:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:35:25,673 INFO L87 Difference]: Start difference. First operand has 212 states, 142 states have (on average 1.5633802816901408) internal successors, (222), 143 states have internal predecessors, (222), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 19:35:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:25,737 INFO L93 Difference]: Finished difference Result 417 states and 773 transitions. [2024-11-18 19:35:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:35:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 428 [2024-11-18 19:35:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:25,749 INFO L225 Difference]: With dead ends: 417 [2024-11-18 19:35:25,749 INFO L226 Difference]: Without dead ends: 208 [2024-11-18 19:35:25,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:35:25,762 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:25,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-18 19:35:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-18 19:35:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 139 states have (on average 1.5467625899280575) internal successors, (215), 139 states have internal predecessors, (215), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 19:35:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 349 transitions. [2024-11-18 19:35:25,846 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 349 transitions. Word has length 428 [2024-11-18 19:35:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:25,849 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 349 transitions. [2024-11-18 19:35:25,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 19:35:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 349 transitions. [2024-11-18 19:35:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 19:35:25,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:25,867 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:25,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:35:26,067 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,SelfDestructingSolverStorable0 [2024-11-18 19:35:26,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:26,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1118116574, now seen corresponding path program 1 times [2024-11-18 19:35:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914158436] [2024-11-18 19:35:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914158436] [2024-11-18 19:35:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914158436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:35:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771545480] [2024-11-18 19:35:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:26,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:35:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:35:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:26,477 INFO L87 Difference]: Start difference. First operand 208 states and 349 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:26,571 INFO L93 Difference]: Finished difference Result 532 states and 898 transitions. [2024-11-18 19:35:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:35:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 428 [2024-11-18 19:35:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:26,580 INFO L225 Difference]: With dead ends: 532 [2024-11-18 19:35:26,583 INFO L226 Difference]: Without dead ends: 327 [2024-11-18 19:35:26,585 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 [2024-11-18 19:35:26,588 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 200 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:26,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 842 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-18 19:35:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2024-11-18 19:35:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 237 states have (on average 1.6033755274261603) internal successors, (380), 238 states have internal predecessors, (380), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 19:35:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 548 transitions. [2024-11-18 19:35:26,673 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 548 transitions. Word has length 428 [2024-11-18 19:35:26,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:26,677 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 548 transitions. [2024-11-18 19:35:26,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 548 transitions. [2024-11-18 19:35:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-18 19:35:26,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:26,683 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:26,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:35:26,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:26,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -54992029, now seen corresponding path program 1 times [2024-11-18 19:35:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:26,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890764271] [2024-11-18 19:35:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890764271] [2024-11-18 19:35:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890764271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:27,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:35:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334920083] [2024-11-18 19:35:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:27,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:35:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:35:27,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:27,302 INFO L87 Difference]: Start difference. First operand 324 states and 548 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:27,358 INFO L93 Difference]: Finished difference Result 677 states and 1138 transitions. [2024-11-18 19:35:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:35:27,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 429 [2024-11-18 19:35:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:27,365 INFO L225 Difference]: With dead ends: 677 [2024-11-18 19:35:27,365 INFO L226 Difference]: Without dead ends: 356 [2024-11-18 19:35:27,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:27,367 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 18 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:27,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 683 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-18 19:35:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 332. [2024-11-18 19:35:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 245 states have (on average 1.6) internal successors, (392), 246 states have internal predecessors, (392), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 19:35:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 560 transitions. [2024-11-18 19:35:27,407 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 560 transitions. Word has length 429 [2024-11-18 19:35:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:27,409 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 560 transitions. [2024-11-18 19:35:27,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 560 transitions. [2024-11-18 19:35:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 19:35:27,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:27,415 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:27,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:35:27,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:27,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash -676562731, now seen corresponding path program 1 times [2024-11-18 19:35:27,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:27,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126086019] [2024-11-18 19:35:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126086019] [2024-11-18 19:35:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126086019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:35:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377412838] [2024-11-18 19:35:28,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:28,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:35:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:35:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:35:28,292 INFO L87 Difference]: Start difference. First operand 332 states and 560 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:28,946 INFO L93 Difference]: Finished difference Result 1319 states and 2231 transitions. [2024-11-18 19:35:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:35:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 430 [2024-11-18 19:35:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:28,955 INFO L225 Difference]: With dead ends: 1319 [2024-11-18 19:35:28,955 INFO L226 Difference]: Without dead ends: 990 [2024-11-18 19:35:28,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:35:28,958 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 755 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:28,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1138 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:35:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-18 19:35:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 966. [2024-11-18 19:35:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 707 states have (on average 1.5898161244695899) internal successors, (1124), 710 states have internal predecessors, (1124), 252 states have call successors, (252), 6 states have call predecessors, (252), 6 states have return successors, (252), 249 states have call predecessors, (252), 252 states have call successors, (252) [2024-11-18 19:35:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1628 transitions. [2024-11-18 19:35:29,086 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1628 transitions. Word has length 430 [2024-11-18 19:35:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:29,089 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1628 transitions. [2024-11-18 19:35:29,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1628 transitions. [2024-11-18 19:35:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 19:35:29,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:29,094 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:35:29,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:29,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -614523117, now seen corresponding path program 1 times [2024-11-18 19:35:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631365873] [2024-11-18 19:35:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:29,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631365873] [2024-11-18 19:35:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631365873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:29,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:29,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:35:29,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116240180] [2024-11-18 19:35:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:29,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:35:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:35:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:35:29,569 INFO L87 Difference]: Start difference. First operand 966 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:30,024 INFO L93 Difference]: Finished difference Result 4818 states and 8128 transitions. [2024-11-18 19:35:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:35:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 430 [2024-11-18 19:35:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:30,065 INFO L225 Difference]: With dead ends: 4818 [2024-11-18 19:35:30,066 INFO L226 Difference]: Without dead ends: 3855 [2024-11-18 19:35:30,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:35:30,073 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 787 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:30,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1651 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:35:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2024-11-18 19:35:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3837. [2024-11-18 19:35:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 2804 states have (on average 1.586305278174037) internal successors, (4448), 2816 states have internal predecessors, (4448), 1008 states have call successors, (1008), 24 states have call predecessors, (1008), 24 states have return successors, (1008), 996 states have call predecessors, (1008), 1008 states have call successors, (1008) [2024-11-18 19:35:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 6464 transitions. [2024-11-18 19:35:30,496 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 6464 transitions. Word has length 430 [2024-11-18 19:35:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:30,498 INFO L471 AbstractCegarLoop]: Abstraction has 3837 states and 6464 transitions. [2024-11-18 19:35:30,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 6464 transitions. [2024-11-18 19:35:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 19:35:30,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:30,506 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:30,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:35:30,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:30,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -339763503, now seen corresponding path program 1 times [2024-11-18 19:35:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969316497] [2024-11-18 19:35:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:30,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:30,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969316497] [2024-11-18 19:35:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969316497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:30,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:30,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:35:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741089910] [2024-11-18 19:35:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:30,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:35:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:35:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:30,746 INFO L87 Difference]: Start difference. First operand 3837 states and 6464 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:31,051 INFO L93 Difference]: Finished difference Result 10329 states and 17290 transitions. [2024-11-18 19:35:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:35:31,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 430 [2024-11-18 19:35:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:31,097 INFO L225 Difference]: With dead ends: 10329 [2024-11-18 19:35:31,098 INFO L226 Difference]: Without dead ends: 6495 [2024-11-18 19:35:31,114 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 [2024-11-18 19:35:31,115 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 224 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:31,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 794 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6495 states. [2024-11-18 19:35:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6495 to 6251. [2024-11-18 19:35:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6251 states, 4486 states have (on average 1.548372715113687) internal successors, (6946), 4522 states have internal predecessors, (6946), 1716 states have call successors, (1716), 48 states have call predecessors, (1716), 48 states have return successors, (1716), 1680 states have call predecessors, (1716), 1716 states have call successors, (1716) [2024-11-18 19:35:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 10378 transitions. [2024-11-18 19:35:31,698 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 10378 transitions. Word has length 430 [2024-11-18 19:35:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:31,699 INFO L471 AbstractCegarLoop]: Abstraction has 6251 states and 10378 transitions. [2024-11-18 19:35:31,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 10378 transitions. [2024-11-18 19:35:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 19:35:31,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:31,705 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:31,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:35:31,705 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:31,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1237156781, now seen corresponding path program 1 times [2024-11-18 19:35:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184249135] [2024-11-18 19:35:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:31,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:31,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184249135] [2024-11-18 19:35:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184249135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:31,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:35:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067665710] [2024-11-18 19:35:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:31,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:35:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:35:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:31,859 INFO L87 Difference]: Start difference. First operand 6251 states and 10378 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:32,184 INFO L93 Difference]: Finished difference Result 11559 states and 19212 transitions. [2024-11-18 19:35:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:35:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 430 [2024-11-18 19:35:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:32,221 INFO L225 Difference]: With dead ends: 11559 [2024-11-18 19:35:32,222 INFO L226 Difference]: Without dead ends: 5311 [2024-11-18 19:35:32,243 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 [2024-11-18 19:35:32,244 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 217 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:32,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 771 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2024-11-18 19:35:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 4307. [2024-11-18 19:35:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4307 states, 3262 states have (on average 1.5885959534028204) internal successors, (5182), 3274 states have internal predecessors, (5182), 1008 states have call successors, (1008), 36 states have call predecessors, (1008), 36 states have return successors, (1008), 996 states have call predecessors, (1008), 1008 states have call successors, (1008) [2024-11-18 19:35:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 7198 transitions. [2024-11-18 19:35:32,738 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 7198 transitions. Word has length 430 [2024-11-18 19:35:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:32,740 INFO L471 AbstractCegarLoop]: Abstraction has 4307 states and 7198 transitions. [2024-11-18 19:35:32,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 7198 transitions. [2024-11-18 19:35:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-18 19:35:32,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:32,747 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:32,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:35:32,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:32,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1252372181, now seen corresponding path program 1 times [2024-11-18 19:35:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875633384] [2024-11-18 19:35:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875633384] [2024-11-18 19:35:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875633384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:33,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:33,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:35:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67776713] [2024-11-18 19:35:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:33,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:35:33,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:35:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:33,169 INFO L87 Difference]: Start difference. First operand 4307 states and 7198 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:33,548 INFO L93 Difference]: Finished difference Result 9816 states and 16417 transitions. [2024-11-18 19:35:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:35:33,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 430 [2024-11-18 19:35:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:33,615 INFO L225 Difference]: With dead ends: 9816 [2024-11-18 19:35:33,619 INFO L226 Difference]: Without dead ends: 5512 [2024-11-18 19:35:33,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:35:33,638 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 199 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:33,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 752 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:35:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2024-11-18 19:35:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 3340. [2024-11-18 19:35:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2556 states have (on average 1.5950704225352113) internal successors, (4077), 2565 states have internal predecessors, (4077), 756 states have call successors, (756), 27 states have call predecessors, (756), 27 states have return successors, (756), 747 states have call predecessors, (756), 756 states have call successors, (756) [2024-11-18 19:35:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 5589 transitions. [2024-11-18 19:35:33,983 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 5589 transitions. Word has length 430 [2024-11-18 19:35:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:33,984 INFO L471 AbstractCegarLoop]: Abstraction has 3340 states and 5589 transitions. [2024-11-18 19:35:33,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 5589 transitions. [2024-11-18 19:35:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-18 19:35:33,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:33,990 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:33,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:35:33,990 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:33,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -984234119, now seen corresponding path program 1 times [2024-11-18 19:35:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034406093] [2024-11-18 19:35:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034406093] [2024-11-18 19:35:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034406093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:34,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:34,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:35:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221914818] [2024-11-18 19:35:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:34,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:35:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:35:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:35:34,795 INFO L87 Difference]: Start difference. First operand 3340 states and 5589 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:35,164 INFO L93 Difference]: Finished difference Result 7211 states and 11857 transitions. [2024-11-18 19:35:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:35:35,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 431 [2024-11-18 19:35:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:35,195 INFO L225 Difference]: With dead ends: 7211 [2024-11-18 19:35:35,197 INFO L226 Difference]: Without dead ends: 3874 [2024-11-18 19:35:35,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:35:35,210 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 65 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:35,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1024 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:35:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2024-11-18 19:35:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3475. [2024-11-18 19:35:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 2668 states have (on average 1.5768365817091454) internal successors, (4207), 2678 states have internal predecessors, (4207), 761 states have call successors, (761), 45 states have call predecessors, (761), 45 states have return successors, (761), 751 states have call predecessors, (761), 761 states have call successors, (761) [2024-11-18 19:35:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5729 transitions. [2024-11-18 19:35:35,538 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5729 transitions. Word has length 431 [2024-11-18 19:35:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:35,539 INFO L471 AbstractCegarLoop]: Abstraction has 3475 states and 5729 transitions. [2024-11-18 19:35:35,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5729 transitions. [2024-11-18 19:35:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-18 19:35:35,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:35,545 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:35,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:35:35,545 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:35,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1793580745, now seen corresponding path program 1 times [2024-11-18 19:35:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368399047] [2024-11-18 19:35:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 15 proven. 183 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:36,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368399047] [2024-11-18 19:35:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368399047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:35:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343393018] [2024-11-18 19:35:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:36,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:35:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:35:36,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:35:36,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:35:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:36,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:35:36,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:35:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4108 proven. 69 refuted. 0 times theorem prover too weak. 4667 trivial. 0 not checked. [2024-11-18 19:35:36,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:35:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 129 proven. 69 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343393018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:35:37,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:35:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 19:35:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666525832] [2024-11-18 19:35:37,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:35:37,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:35:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:35:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:35:37,404 INFO L87 Difference]: Start difference. First operand 3475 states and 5729 transitions. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) [2024-11-18 19:35:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:38,333 INFO L93 Difference]: Finished difference Result 5586 states and 9087 transitions. [2024-11-18 19:35:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 19:35:38,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) Word has length 431 [2024-11-18 19:35:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:38,358 INFO L225 Difference]: With dead ends: 5586 [2024-11-18 19:35:38,359 INFO L226 Difference]: Without dead ends: 2123 [2024-11-18 19:35:38,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 859 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-18 19:35:38,372 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 509 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:38,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 702 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:35:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2024-11-18 19:35:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1386. [2024-11-18 19:35:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1012 states have (on average 1.4980237154150198) internal successors, (1516), 1017 states have internal predecessors, (1516), 341 states have call successors, (341), 32 states have call predecessors, (341), 32 states have return successors, (341), 336 states have call predecessors, (341), 341 states have call successors, (341) [2024-11-18 19:35:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 2198 transitions. [2024-11-18 19:35:38,630 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 2198 transitions. Word has length 431 [2024-11-18 19:35:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:38,631 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 2198 transitions. [2024-11-18 19:35:38,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (153), 3 states have call predecessors, (153), 3 states have call successors, (153) [2024-11-18 19:35:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 2198 transitions. [2024-11-18 19:35:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-18 19:35:38,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:38,637 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:38,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 19:35:38,840 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,SelfDestructingSolverStorable9 [2024-11-18 19:35:38,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:38,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:38,842 INFO L85 PathProgramCache]: Analyzing trace with hash -116511856, now seen corresponding path program 1 times [2024-11-18 19:35:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:38,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795907155] [2024-11-18 19:35:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:39,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:39,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795907155] [2024-11-18 19:35:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795907155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:39,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:35:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5955835] [2024-11-18 19:35:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:39,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:35:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:35:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:35:39,693 INFO L87 Difference]: Start difference. First operand 1386 states and 2198 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:40,326 INFO L93 Difference]: Finished difference Result 4142 states and 6576 transitions. [2024-11-18 19:35:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:35:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 431 [2024-11-18 19:35:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:40,343 INFO L225 Difference]: With dead ends: 4142 [2024-11-18 19:35:40,343 INFO L226 Difference]: Without dead ends: 2768 [2024-11-18 19:35:40,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:35:40,351 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 325 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:40,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1409 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:35:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2024-11-18 19:35:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2758. [2024-11-18 19:35:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2016 states have (on average 1.496031746031746) internal successors, (3016), 2025 states have internal predecessors, (3016), 677 states have call successors, (677), 64 states have call predecessors, (677), 64 states have return successors, (677), 668 states have call predecessors, (677), 677 states have call successors, (677) [2024-11-18 19:35:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4370 transitions. [2024-11-18 19:35:40,698 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4370 transitions. Word has length 431 [2024-11-18 19:35:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:40,699 INFO L471 AbstractCegarLoop]: Abstraction has 2758 states and 4370 transitions. [2024-11-18 19:35:40,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4370 transitions. [2024-11-18 19:35:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-18 19:35:40,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:40,706 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:40,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:35:40,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:40,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 894605394, now seen corresponding path program 1 times [2024-11-18 19:35:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698584225] [2024-11-18 19:35:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 19:35:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698584225] [2024-11-18 19:35:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698584225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:35:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:35:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 19:35:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138206371] [2024-11-18 19:35:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:35:43,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:35:43,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:35:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:35:43,295 INFO L87 Difference]: Start difference. First operand 2758 states and 4370 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:49,997 INFO L93 Difference]: Finished difference Result 20870 states and 32971 transitions. [2024-11-18 19:35:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 19:35:49,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 431 [2024-11-18 19:35:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:50,081 INFO L225 Difference]: With dead ends: 20870 [2024-11-18 19:35:50,082 INFO L226 Difference]: Without dead ends: 18124 [2024-11-18 19:35:50,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2024-11-18 19:35:50,107 INFO L432 NwaCegarLoop]: 640 mSDtfsCounter, 3832 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3832 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1799 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:50,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3832 Valid, 2287 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1799 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-18 19:35:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18124 states. [2024-11-18 19:35:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18124 to 8078. [2024-11-18 19:35:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8078 states, 5942 states have (on average 1.4681925277684282) internal successors, (8724), 5993 states have internal predecessors, (8724), 1908 states have call successors, (1908), 227 states have call predecessors, (1908), 227 states have return successors, (1908), 1857 states have call predecessors, (1908), 1908 states have call successors, (1908) [2024-11-18 19:35:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8078 states to 8078 states and 12540 transitions. [2024-11-18 19:35:51,371 INFO L78 Accepts]: Start accepts. Automaton has 8078 states and 12540 transitions. Word has length 431 [2024-11-18 19:35:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:51,372 INFO L471 AbstractCegarLoop]: Abstraction has 8078 states and 12540 transitions. [2024-11-18 19:35:51,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 19:35:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8078 states and 12540 transitions. [2024-11-18 19:35:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-18 19:35:51,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:51,382 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:51,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 19:35:51,382 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:51,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -693742508, now seen corresponding path program 1 times [2024-11-18 19:35:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608909228] [2024-11-18 19:35:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 75 proven. 123 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:51,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:51,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608909228] [2024-11-18 19:35:51,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608909228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:35:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852041748] [2024-11-18 19:35:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:51,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:35:51,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:35:51,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:35:51,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:35:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:52,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:35:52,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:35:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4216 proven. 123 refuted. 0 times theorem prover too weak. 4505 trivial. 0 not checked. [2024-11-18 19:35:52,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:35:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 75 proven. 123 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852041748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:35:53,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:35:53,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 19:35:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897986794] [2024-11-18 19:35:53,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:35:53,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:35:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:35:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:35:53,180 INFO L87 Difference]: Start difference. First operand 8078 states and 12540 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2024-11-18 19:35:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:55,036 INFO L93 Difference]: Finished difference Result 16478 states and 25369 transitions. [2024-11-18 19:35:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:35:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 431 [2024-11-18 19:35:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:55,084 INFO L225 Difference]: With dead ends: 16478 [2024-11-18 19:35:55,085 INFO L226 Difference]: Without dead ends: 8418 [2024-11-18 19:35:55,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:35:55,109 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 488 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:55,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 649 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:35:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2024-11-18 19:35:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 8190. [2024-11-18 19:35:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8190 states, 6026 states have (on average 1.4410886159973448) internal successors, (8684), 6077 states have internal predecessors, (8684), 1908 states have call successors, (1908), 255 states have call predecessors, (1908), 255 states have return successors, (1908), 1857 states have call predecessors, (1908), 1908 states have call successors, (1908) [2024-11-18 19:35:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 12500 transitions. [2024-11-18 19:35:56,275 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 12500 transitions. Word has length 431 [2024-11-18 19:35:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:56,276 INFO L471 AbstractCegarLoop]: Abstraction has 8190 states and 12500 transitions. [2024-11-18 19:35:56,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2024-11-18 19:35:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 12500 transitions. [2024-11-18 19:35:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-18 19:35:56,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:56,285 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:56,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:35:56,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:35:56,490 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:35:56,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:35:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -257180873, now seen corresponding path program 1 times [2024-11-18 19:35:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:35:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644924025] [2024-11-18 19:35:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:35:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 102 proven. 96 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:56,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:35:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644924025] [2024-11-18 19:35:56,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644924025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:35:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944261162] [2024-11-18 19:35:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:35:56,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:35:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:35:56,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:35:56,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:35:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:35:57,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:35:57,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:35:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4248 proven. 75 refuted. 0 times theorem prover too weak. 4521 trivial. 0 not checked. [2024-11-18 19:35:57,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:35:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 123 proven. 75 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 19:35:57,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944261162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:35:57,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:35:57,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 19:35:57,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697514235] [2024-11-18 19:35:57,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:35:57,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:35:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:35:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:35:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:35:57,946 INFO L87 Difference]: Start difference. First operand 8190 states and 12500 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2024-11-18 19:35:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:35:59,161 INFO L93 Difference]: Finished difference Result 12539 states and 19022 transitions. [2024-11-18 19:35:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 19:35:59,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 433 [2024-11-18 19:35:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:35:59,193 INFO L225 Difference]: With dead ends: 12539 [2024-11-18 19:35:59,194 INFO L226 Difference]: Without dead ends: 4367 [2024-11-18 19:35:59,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 863 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-11-18 19:35:59,212 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 378 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:35:59,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 809 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:35:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2024-11-18 19:35:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4232. [2024-11-18 19:35:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 3097 states have (on average 1.4087826929286407) internal successors, (4363), 3123 states have internal predecessors, (4363), 985 states have call successors, (985), 149 states have call predecessors, (985), 149 states have return successors, (985), 959 states have call predecessors, (985), 985 states have call successors, (985) [2024-11-18 19:35:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6333 transitions. [2024-11-18 19:35:59,811 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6333 transitions. Word has length 433 [2024-11-18 19:35:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:35:59,812 INFO L471 AbstractCegarLoop]: Abstraction has 4232 states and 6333 transitions. [2024-11-18 19:35:59,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2024-11-18 19:35:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6333 transitions. [2024-11-18 19:35:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-18 19:35:59,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:35:59,818 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:35:59,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 19:36:00,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:00,020 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:36:00,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:36:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1971969594, now seen corresponding path program 1 times [2024-11-18 19:36:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:36:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827638283] [2024-11-18 19:36:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:36:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 408 proven. 168 refuted. 0 times theorem prover too weak. 8268 trivial. 0 not checked. [2024-11-18 19:36:02,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:36:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827638283] [2024-11-18 19:36:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827638283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:36:02,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454319296] [2024-11-18 19:36:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:36:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:36:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:36:02,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:36:02,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 19:36:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:36:02,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 19:36:02,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:36:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4058 proven. 168 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2024-11-18 19:36:11,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:36:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 408 proven. 177 refuted. 0 times theorem prover too weak. 8259 trivial. 0 not checked. [2024-11-18 19:36:13,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454319296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:36:13,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:36:13,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 16] total 32 [2024-11-18 19:36:13,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549315375] [2024-11-18 19:36:13,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:36:13,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 19:36:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:36:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 19:36:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2024-11-18 19:36:13,803 INFO L87 Difference]: Start difference. First operand 4232 states and 6333 transitions. Second operand has 32 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 9 states have call successors, (109), 4 states have call predecessors, (109), 9 states have return successors, (110), 9 states have call predecessors, (110), 9 states have call successors, (110) [2024-11-18 19:36:28,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]