./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.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_variablewrapping_wrapper-s_file-56.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 ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:08:32,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:08:32,505 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:08:32,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:08:32,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:08:32,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:08:32,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:08:32,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:08:32,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:08:32,557 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:08:32,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:08:32,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:08:32,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:08:32,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:08:32,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:08:32,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:08:32,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:08:32,560 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:08:32,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:08:32,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:08:32,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:08:32,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:08:32,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:08:32,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:08:32,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:08:32,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:08:32,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:08:32,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:08:32,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:08:32,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:08:32,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:08:32,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:08:32,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:08:32,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:08:32,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:08:32,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:08:32,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:08:32,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:08:32,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:08:32,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:08:32,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:08:32,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:08:32,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 [2024-11-19 01:08:32,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:08:32,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:08:32,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:08:32,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:08:32,866 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:08:32,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2024-11-19 01:08:34,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:08:34,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:08:34,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2024-11-19 01:08:34,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69f52afa/8646add44d6f484e87da9e0d5ba3a166/FLAGa1f8697ed [2024-11-19 01:08:34,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69f52afa/8646add44d6f484e87da9e0d5ba3a166 [2024-11-19 01:08:34,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:08:34,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:08:34,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:08:34,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:08:34,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:08:34,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:08:34" (1/1) ... [2024-11-19 01:08:34,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c289e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:34, skipping insertion in model container [2024-11-19 01:08:34,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:08:34" (1/1) ... [2024-11-19 01:08:34,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:08:34,787 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_variablewrapping_wrapper-s_file-56.i[916,929] [2024-11-19 01:08:34,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:08:34,906 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:08:34,918 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_variablewrapping_wrapper-s_file-56.i[916,929] [2024-11-19 01:08:34,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:08:35,000 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:08:35,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35 WrapperNode [2024-11-19 01:08:35,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:08:35,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:08:35,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:08:35,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:08:35,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,076 INFO L138 Inliner]: procedures = 30, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 571 [2024-11-19 01:08:35,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:08:35,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:08:35,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:08:35,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:08:35,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,112 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:08:35,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:08:35,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:08:35,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:08:35,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:08:35,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (1/1) ... [2024-11-19 01:08:35,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:08:35,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:08:35,210 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) [2024-11-19 01:08:35,213 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 [2024-11-19 01:08:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:08:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:08:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:08:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:08:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:08:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:08:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:08:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:08:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:08:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:08:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:08:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:08:35,406 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:08:35,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:08:36,201 INFO L? ?]: Removed 158 outVars from TransFormulas that were not future-live. [2024-11-19 01:08:36,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:08:36,224 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:08:36,224 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:08:36,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:08:36 BoogieIcfgContainer [2024-11-19 01:08:36,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:08:36,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:08:36,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:08:36,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:08:36,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:08:34" (1/3) ... [2024-11-19 01:08:36,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4609dc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:08:36, skipping insertion in model container [2024-11-19 01:08:36,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:08:35" (2/3) ... [2024-11-19 01:08:36,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4609dc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:08:36, skipping insertion in model container [2024-11-19 01:08:36,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:08:36" (3/3) ... [2024-11-19 01:08:36,266 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-56.i [2024-11-19 01:08:36,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:08:36,279 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:08:36,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:08:36,345 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;@6f3b1714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:08:36,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:08:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 105 states have internal predecessors, (149), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 01:08:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:08:36,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:36,365 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:36,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:36,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 607828223, now seen corresponding path program 1 times [2024-11-19 01:08:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192433753] [2024-11-19 01:08:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-19 01:08:36,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:36,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192433753] [2024-11-19 01:08:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192433753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:08:36,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888118031] [2024-11-19 01:08:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:36,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:08:36,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:08:36,826 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) [2024-11-19 01:08:36,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:08:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:37,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:08:37,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:08:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-19 01:08:37,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:08:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888118031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:08:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:08:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487944054] [2024-11-19 01:08:37,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:37,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:08:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:08:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:08:37,212 INFO L87 Difference]: Start difference. First operand has 126 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 105 states have internal predecessors, (149), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:08:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:37,250 INFO L93 Difference]: Finished difference Result 245 states and 387 transitions. [2024-11-19 01:08:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:08:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2024-11-19 01:08:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:37,263 INFO L225 Difference]: With dead ends: 245 [2024-11-19 01:08:37,263 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 01:08:37,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:08:37,273 INFO L432 NwaCegarLoop]: 180 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, 180 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 [2024-11-19 01:08:37,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:08:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 01:08:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-19 01:08:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 101 states have internal predecessors, (142), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 01:08:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 180 transitions. [2024-11-19 01:08:37,323 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 180 transitions. Word has length 151 [2024-11-19 01:08:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:37,324 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 180 transitions. [2024-11-19 01:08:37,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:08:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 180 transitions. [2024-11-19 01:08:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:08:37,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:37,330 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:37,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:08:37,531 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 [2024-11-19 01:08:37,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:37,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1661937133, now seen corresponding path program 1 times [2024-11-19 01:08:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:37,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592813556] [2024-11-19 01:08:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592813556] [2024-11-19 01:08:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592813556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:37,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:37,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:08:37,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098142176] [2024-11-19 01:08:37,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:37,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:08:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:08:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:08:37,984 INFO L87 Difference]: Start difference. First operand 122 states and 180 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:08:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:38,041 INFO L93 Difference]: Finished difference Result 243 states and 360 transitions. [2024-11-19 01:08:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:08:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2024-11-19 01:08:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:38,044 INFO L225 Difference]: With dead ends: 243 [2024-11-19 01:08:38,046 INFO L226 Difference]: Without dead ends: 124 [2024-11-19 01:08:38,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:08:38,050 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:38,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 523 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:08:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-19 01:08:38,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-19 01:08:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 01:08:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-19 01:08:38,073 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 151 [2024-11-19 01:08:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:38,079 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-19 01:08:38,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:08:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-19 01:08:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:08:38,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:38,081 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:38,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:08:38,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:38,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash 982664879, now seen corresponding path program 1 times [2024-11-19 01:08:38,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:38,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426224388] [2024-11-19 01:08:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:38,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426224388] [2024-11-19 01:08:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426224388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:38,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:08:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559878784] [2024-11-19 01:08:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:38,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:08:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:08:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:08:38,272 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:38,304 INFO L93 Difference]: Finished difference Result 246 states and 363 transitions. [2024-11-19 01:08:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:08:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2024-11-19 01:08:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:38,308 INFO L225 Difference]: With dead ends: 246 [2024-11-19 01:08:38,310 INFO L226 Difference]: Without dead ends: 125 [2024-11-19 01:08:38,311 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 [2024-11-19 01:08:38,312 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:38,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:08:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-19 01:08:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-19 01:08:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 01:08:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2024-11-19 01:08:38,330 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 151 [2024-11-19 01:08:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:38,331 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2024-11-19 01:08:38,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2024-11-19 01:08:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:08:38,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:38,334 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:38,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:08:38,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:38,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash 165016429, now seen corresponding path program 1 times [2024-11-19 01:08:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576117798] [2024-11-19 01:08:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:40,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:40,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576117798] [2024-11-19 01:08:40,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576117798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:40,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:40,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:08:40,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546694607] [2024-11-19 01:08:40,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:40,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:08:40,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:08:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:08:40,191 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:41,789 INFO L93 Difference]: Finished difference Result 677 states and 1006 transitions. [2024-11-19 01:08:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 01:08:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2024-11-19 01:08:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:41,795 INFO L225 Difference]: With dead ends: 677 [2024-11-19 01:08:41,797 INFO L226 Difference]: Without dead ends: 555 [2024-11-19 01:08:41,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:08:41,801 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 862 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:41,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1013 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 01:08:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-19 01:08:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 295. [2024-11-19 01:08:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 254 states have (on average 1.4409448818897639) internal successors, (366), 254 states have internal predecessors, (366), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 442 transitions. [2024-11-19 01:08:41,848 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 442 transitions. Word has length 151 [2024-11-19 01:08:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:41,850 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 442 transitions. [2024-11-19 01:08:41,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 442 transitions. [2024-11-19 01:08:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:08:41,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:41,853 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:41,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:08:41,854 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:41,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash -6012814, now seen corresponding path program 1 times [2024-11-19 01:08:41,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:41,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944329377] [2024-11-19 01:08:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:41,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:41,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944329377] [2024-11-19 01:08:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944329377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:41,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:41,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:08:41,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489001306] [2024-11-19 01:08:41,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:41,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:08:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:08:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:08:41,987 INFO L87 Difference]: Start difference. First operand 295 states and 442 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:42,052 INFO L93 Difference]: Finished difference Result 586 states and 879 transitions. [2024-11-19 01:08:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:08:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-19 01:08:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:42,056 INFO L225 Difference]: With dead ends: 586 [2024-11-19 01:08:42,056 INFO L226 Difference]: Without dead ends: 294 [2024-11-19 01:08:42,057 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 [2024-11-19 01:08:42,058 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:42,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:08:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-19 01:08:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-11-19 01:08:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 253 states have (on average 1.4308300395256917) internal successors, (362), 253 states have internal predecessors, (362), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 438 transitions. [2024-11-19 01:08:42,085 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 438 transitions. Word has length 152 [2024-11-19 01:08:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:42,086 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 438 transitions. [2024-11-19 01:08:42,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 438 transitions. [2024-11-19 01:08:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:08:42,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:42,089 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:42,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:08:42,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:42,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:42,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1365661008, now seen corresponding path program 1 times [2024-11-19 01:08:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:42,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514328863] [2024-11-19 01:08:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:42,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514328863] [2024-11-19 01:08:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514328863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:42,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:42,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:08:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004515929] [2024-11-19 01:08:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:42,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:08:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:08:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:08:42,215 INFO L87 Difference]: Start difference. First operand 294 states and 438 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:42,297 INFO L93 Difference]: Finished difference Result 589 states and 881 transitions. [2024-11-19 01:08:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:08:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-19 01:08:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:42,299 INFO L225 Difference]: With dead ends: 589 [2024-11-19 01:08:42,300 INFO L226 Difference]: Without dead ends: 298 [2024-11-19 01:08:42,300 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 [2024-11-19 01:08:42,301 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:42,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:08:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-19 01:08:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-19 01:08:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 257 states have (on average 1.424124513618677) internal successors, (366), 257 states have internal predecessors, (366), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2024-11-19 01:08:42,316 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 152 [2024-11-19 01:08:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:42,317 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2024-11-19 01:08:42,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2024-11-19 01:08:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:08:42,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:42,319 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:42,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:08:42,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -28424802, now seen corresponding path program 1 times [2024-11-19 01:08:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:42,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797780684] [2024-11-19 01:08:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:42,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:42,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797780684] [2024-11-19 01:08:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797780684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:08:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827931424] [2024-11-19 01:08:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:42,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:08:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:08:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:08:42,430 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:42,537 INFO L93 Difference]: Finished difference Result 593 states and 881 transitions. [2024-11-19 01:08:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:08:42,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-19 01:08:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:42,540 INFO L225 Difference]: With dead ends: 593 [2024-11-19 01:08:42,541 INFO L226 Difference]: Without dead ends: 298 [2024-11-19 01:08:42,541 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 [2024-11-19 01:08:42,542 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:42,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:08:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-19 01:08:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-19 01:08:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 257 states have (on average 1.416342412451362) internal successors, (364), 257 states have internal predecessors, (364), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 440 transitions. [2024-11-19 01:08:42,561 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 440 transitions. Word has length 152 [2024-11-19 01:08:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:42,562 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 440 transitions. [2024-11-19 01:08:42,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 440 transitions. [2024-11-19 01:08:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:08:42,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:42,565 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:42,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:08:42,566 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:42,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1035364039, now seen corresponding path program 1 times [2024-11-19 01:08:42,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:42,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140132349] [2024-11-19 01:08:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140132349] [2024-11-19 01:08:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140132349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:08:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51122225] [2024-11-19 01:08:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:42,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:08:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:08:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:08:42,955 INFO L87 Difference]: Start difference. First operand 298 states and 440 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:43,396 INFO L93 Difference]: Finished difference Result 709 states and 1054 transitions. [2024-11-19 01:08:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:08:43,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-19 01:08:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:43,400 INFO L225 Difference]: With dead ends: 709 [2024-11-19 01:08:43,400 INFO L226 Difference]: Without dead ends: 414 [2024-11-19 01:08:43,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:08:43,402 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:43,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 635 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:08:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-19 01:08:43,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 332. [2024-11-19 01:08:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 291 states have (on average 1.436426116838488) internal successors, (418), 291 states have internal predecessors, (418), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 494 transitions. [2024-11-19 01:08:43,418 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 494 transitions. Word has length 153 [2024-11-19 01:08:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:43,419 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 494 transitions. [2024-11-19 01:08:43,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 494 transitions. [2024-11-19 01:08:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:08:43,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:43,421 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:43,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:08:43,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:43,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash -618514157, now seen corresponding path program 1 times [2024-11-19 01:08:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577003872] [2024-11-19 01:08:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577003872] [2024-11-19 01:08:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577003872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 01:08:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128398616] [2024-11-19 01:08:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:48,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:08:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:08:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:08:48,434 INFO L87 Difference]: Start difference. First operand 332 states and 494 transitions. Second operand has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:08:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:51,923 INFO L93 Difference]: Finished difference Result 946 states and 1408 transitions. [2024-11-19 01:08:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:08:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:08:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:51,927 INFO L225 Difference]: With dead ends: 946 [2024-11-19 01:08:51,929 INFO L226 Difference]: Without dead ends: 617 [2024-11-19 01:08:51,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-11-19 01:08:51,932 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 1050 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:51,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1163 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 01:08:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-19 01:08:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 378. [2024-11-19 01:08:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 337 states have (on average 1.456973293768546) internal successors, (491), 337 states have internal predecessors, (491), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 01:08:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 567 transitions. [2024-11-19 01:08:51,952 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 567 transitions. Word has length 153 [2024-11-19 01:08:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:51,952 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 567 transitions. [2024-11-19 01:08:51,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:08:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 567 transitions. [2024-11-19 01:08:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:08:51,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:51,954 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:51,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:08:51,955 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:51,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:51,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1205320171, now seen corresponding path program 1 times [2024-11-19 01:08:51,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:51,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006560935] [2024-11-19 01:08:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006560935] [2024-11-19 01:08:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006560935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:55,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:08:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001633417] [2024-11-19 01:08:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:55,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:08:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:08:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:08:55,302 INFO L87 Difference]: Start difference. First operand 378 states and 567 transitions. Second operand has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:08:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:57,682 INFO L93 Difference]: Finished difference Result 1002 states and 1490 transitions. [2024-11-19 01:08:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:08:57,683 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:08:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:57,687 INFO L225 Difference]: With dead ends: 1002 [2024-11-19 01:08:57,687 INFO L226 Difference]: Without dead ends: 627 [2024-11-19 01:08:57,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:08:57,689 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 902 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:57,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1127 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-19 01:08:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-19 01:08:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 426. [2024-11-19 01:08:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 380 states have (on average 1.444736842105263) internal successors, (549), 381 states have internal predecessors, (549), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:08:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 633 transitions. [2024-11-19 01:08:57,710 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 633 transitions. Word has length 153 [2024-11-19 01:08:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:57,710 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 633 transitions. [2024-11-19 01:08:57,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:08:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 633 transitions. [2024-11-19 01:08:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:08:57,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:57,714 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:57,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:08:57,714 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 121992353, now seen corresponding path program 1 times [2024-11-19 01:08:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053764783] [2024-11-19 01:08:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:57,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:08:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:08:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:08:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053764783] [2024-11-19 01:08:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053764783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:08:57,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:08:57,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:08:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317836093] [2024-11-19 01:08:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:08:57,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:08:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:08:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:08:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:08:57,992 INFO L87 Difference]: Start difference. First operand 426 states and 633 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:08:58,369 INFO L93 Difference]: Finished difference Result 907 states and 1348 transitions. [2024-11-19 01:08:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:08:58,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-19 01:08:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:08:58,375 INFO L225 Difference]: With dead ends: 907 [2024-11-19 01:08:58,375 INFO L226 Difference]: Without dead ends: 484 [2024-11-19 01:08:58,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:08:58,377 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 73 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:08:58,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 436 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:08:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-19 01:08:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 414. [2024-11-19 01:08:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 368 states have (on average 1.4266304347826086) internal successors, (525), 369 states have internal predecessors, (525), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:08:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 609 transitions. [2024-11-19 01:08:58,398 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 609 transitions. Word has length 153 [2024-11-19 01:08:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:08:58,399 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 609 transitions. [2024-11-19 01:08:58,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:08:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 609 transitions. [2024-11-19 01:08:58,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:08:58,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:08:58,401 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:08:58,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:08:58,401 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:08:58,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:08:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1868831367, now seen corresponding path program 1 times [2024-11-19 01:08:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:08:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972319648] [2024-11-19 01:08:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:08:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:08:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972319648] [2024-11-19 01:09:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972319648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:09:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253125728] [2024-11-19 01:09:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:00,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:09:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:00,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:09:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:09:00,814 INFO L87 Difference]: Start difference. First operand 414 states and 609 transitions. Second operand has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-19 01:09:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:01,754 INFO L93 Difference]: Finished difference Result 965 states and 1423 transitions. [2024-11-19 01:09:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:09:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) Word has length 153 [2024-11-19 01:09:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:01,759 INFO L225 Difference]: With dead ends: 965 [2024-11-19 01:09:01,759 INFO L226 Difference]: Without dead ends: 554 [2024-11-19 01:09:01,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:09:01,760 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:01,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 970 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:09:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-19 01:09:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 475. [2024-11-19 01:09:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 429 states have (on average 1.442890442890443) internal successors, (619), 430 states have internal predecessors, (619), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 703 transitions. [2024-11-19 01:09:01,779 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 703 transitions. Word has length 153 [2024-11-19 01:09:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:01,780 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 703 transitions. [2024-11-19 01:09:01,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-19 01:09:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 703 transitions. [2024-11-19 01:09:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:01,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:01,782 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:01,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:09:01,782 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:01,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1562524430, now seen corresponding path program 1 times [2024-11-19 01:09:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:01,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596190160] [2024-11-19 01:09:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-19 01:09:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596190160] [2024-11-19 01:09:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596190160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:09:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836972680] [2024-11-19 01:09:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:01,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:09:01,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:09:01,994 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) [2024-11-19 01:09:01,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:09:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:02,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:09:02,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:09:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:02,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:09:02,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836972680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:02,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:09:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:09:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936989277] [2024-11-19 01:09:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:02,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:09:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:09:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:09:02,293 INFO L87 Difference]: Start difference. First operand 475 states and 703 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:09:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:02,326 INFO L93 Difference]: Finished difference Result 956 states and 1415 transitions. [2024-11-19 01:09:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:09:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-19 01:09:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:02,329 INFO L225 Difference]: With dead ends: 956 [2024-11-19 01:09:02,329 INFO L226 Difference]: Without dead ends: 484 [2024-11-19 01:09:02,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:09:02,331 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:02,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 691 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:09:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-19 01:09:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2024-11-19 01:09:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 438 states have (on average 1.4337899543378996) internal successors, (628), 439 states have internal predecessors, (628), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 712 transitions. [2024-11-19 01:09:02,349 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 712 transitions. Word has length 153 [2024-11-19 01:09:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:02,350 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 712 transitions. [2024-11-19 01:09:02,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:09:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 712 transitions. [2024-11-19 01:09:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:02,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:02,352 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:02,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:09:02,553 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,SelfDestructingSolverStorable12 [2024-11-19 01:09:02,554 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:02,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 588967689, now seen corresponding path program 1 times [2024-11-19 01:09:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770836430] [2024-11-19 01:09:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:04,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:04,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770836430] [2024-11-19 01:09:04,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770836430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:04,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:09:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577399023] [2024-11-19 01:09:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:04,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:09:04,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:09:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:09:04,238 INFO L87 Difference]: Start difference. First operand 484 states and 712 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:05,402 INFO L93 Difference]: Finished difference Result 1129 states and 1659 transitions. [2024-11-19 01:09:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:09:05,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-11-19 01:09:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:05,406 INFO L225 Difference]: With dead ends: 1129 [2024-11-19 01:09:05,406 INFO L226 Difference]: Without dead ends: 648 [2024-11-19 01:09:05,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:09:05,408 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 846 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:05,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 751 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:09:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-19 01:09:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 508. [2024-11-19 01:09:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 462 states have (on average 1.4437229437229437) internal successors, (667), 463 states have internal predecessors, (667), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 751 transitions. [2024-11-19 01:09:05,427 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 751 transitions. Word has length 153 [2024-11-19 01:09:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:05,428 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 751 transitions. [2024-11-19 01:09:05,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 751 transitions. [2024-11-19 01:09:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:05,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:05,430 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:05,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:09:05,430 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:05,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2161675, now seen corresponding path program 1 times [2024-11-19 01:09:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:05,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561830372] [2024-11-19 01:09:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:05,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561830372] [2024-11-19 01:09:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561830372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:07,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:07,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:09:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239499314] [2024-11-19 01:09:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:07,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:09:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:09:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:09:07,856 INFO L87 Difference]: Start difference. First operand 508 states and 751 transitions. Second operand has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:09,551 INFO L93 Difference]: Finished difference Result 1232 states and 1803 transitions. [2024-11-19 01:09:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:09:09,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:09:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:09,557 INFO L225 Difference]: With dead ends: 1232 [2024-11-19 01:09:09,557 INFO L226 Difference]: Without dead ends: 727 [2024-11-19 01:09:09,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:09:09,562 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1072 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:09,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1064 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 01:09:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-19 01:09:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 508. [2024-11-19 01:09:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 462 states have (on average 1.4437229437229437) internal successors, (667), 463 states have internal predecessors, (667), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 751 transitions. [2024-11-19 01:09:09,586 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 751 transitions. Word has length 153 [2024-11-19 01:09:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:09,588 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 751 transitions. [2024-11-19 01:09:09,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 751 transitions. [2024-11-19 01:09:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:09,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:09,591 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:09,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:09:09,592 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:09,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1127987247, now seen corresponding path program 1 times [2024-11-19 01:09:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:09,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499708958] [2024-11-19 01:09:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:09,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499708958] [2024-11-19 01:09:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499708958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:11,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:11,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:09:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924249322] [2024-11-19 01:09:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:11,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:09:11,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:09:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:09:11,608 INFO L87 Difference]: Start difference. First operand 508 states and 751 transitions. Second operand has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:13,131 INFO L93 Difference]: Finished difference Result 1228 states and 1797 transitions. [2024-11-19 01:09:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:09:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-11-19 01:09:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:13,135 INFO L225 Difference]: With dead ends: 1228 [2024-11-19 01:09:13,135 INFO L226 Difference]: Without dead ends: 723 [2024-11-19 01:09:13,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:09:13,137 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 900 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:13,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 976 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 01:09:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-19 01:09:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 507. [2024-11-19 01:09:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 461 states have (on average 1.440347071583514) internal successors, (664), 462 states have internal predecessors, (664), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 748 transitions. [2024-11-19 01:09:13,158 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 748 transitions. Word has length 153 [2024-11-19 01:09:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:13,158 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 748 transitions. [2024-11-19 01:09:13,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 748 transitions. [2024-11-19 01:09:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:13,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:13,161 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:13,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:09:13,161 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:13,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1714793261, now seen corresponding path program 1 times [2024-11-19 01:09:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367027039] [2024-11-19 01:09:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:16,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367027039] [2024-11-19 01:09:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367027039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:16,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 01:09:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790701397] [2024-11-19 01:09:16,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:16,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:09:16,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:09:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:09:16,333 INFO L87 Difference]: Start difference. First operand 507 states and 748 transitions. Second operand has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-19 01:09:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:19,816 INFO L93 Difference]: Finished difference Result 1267 states and 1855 transitions. [2024-11-19 01:09:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:09:19,817 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) Word has length 153 [2024-11-19 01:09:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:19,821 INFO L225 Difference]: With dead ends: 1267 [2024-11-19 01:09:19,821 INFO L226 Difference]: Without dead ends: 763 [2024-11-19 01:09:19,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 01:09:19,823 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 716 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:19,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2155 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-19 01:09:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-19 01:09:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 529. [2024-11-19 01:09:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 483 states have (on average 1.443064182194617) internal successors, (697), 484 states have internal predecessors, (697), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 781 transitions. [2024-11-19 01:09:19,845 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 781 transitions. Word has length 153 [2024-11-19 01:09:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:19,846 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 781 transitions. [2024-11-19 01:09:19,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-19 01:09:19,846 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 781 transitions. [2024-11-19 01:09:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:19,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:19,848 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:19,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:09:19,848 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:19,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1933647979, now seen corresponding path program 1 times [2024-11-19 01:09:19,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:19,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014444131] [2024-11-19 01:09:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:19,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:21,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014444131] [2024-11-19 01:09:21,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014444131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:21,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:21,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:09:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935260289] [2024-11-19 01:09:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:21,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:09:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:09:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:09:21,752 INFO L87 Difference]: Start difference. First operand 529 states and 781 transitions. Second operand has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:22,754 INFO L93 Difference]: Finished difference Result 815 states and 1199 transitions. [2024-11-19 01:09:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:09:22,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:09:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:22,759 INFO L225 Difference]: With dead ends: 815 [2024-11-19 01:09:22,759 INFO L226 Difference]: Without dead ends: 649 [2024-11-19 01:09:22,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:09:22,760 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 132 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:22,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1309 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:09:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-19 01:09:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 569. [2024-11-19 01:09:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 523 states have (on average 1.4512428298279159) internal successors, (759), 524 states have internal predecessors, (759), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 843 transitions. [2024-11-19 01:09:22,783 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 843 transitions. Word has length 153 [2024-11-19 01:09:22,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:22,783 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 843 transitions. [2024-11-19 01:09:22,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 843 transitions. [2024-11-19 01:09:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:22,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:22,785 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:22,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:09:22,786 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:22,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1652753647, now seen corresponding path program 1 times [2024-11-19 01:09:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200472676] [2024-11-19 01:09:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200472676] [2024-11-19 01:09:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200472676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:24,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:09:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952917592] [2024-11-19 01:09:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:24,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:09:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:09:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:09:24,604 INFO L87 Difference]: Start difference. First operand 569 states and 843 transitions. Second operand has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:25,768 INFO L93 Difference]: Finished difference Result 1312 states and 1937 transitions. [2024-11-19 01:09:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:09:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:09:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:25,773 INFO L225 Difference]: With dead ends: 1312 [2024-11-19 01:09:25,773 INFO L226 Difference]: Without dead ends: 746 [2024-11-19 01:09:25,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:09:25,777 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 159 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:25,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1532 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 01:09:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-19 01:09:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 555. [2024-11-19 01:09:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 509 states have (on average 1.4440078585461689) internal successors, (735), 510 states have internal predecessors, (735), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 819 transitions. [2024-11-19 01:09:25,803 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 819 transitions. Word has length 153 [2024-11-19 01:09:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:25,803 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 819 transitions. [2024-11-19 01:09:25,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 819 transitions. [2024-11-19 01:09:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:25,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:25,805 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:25,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:09:25,806 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:25,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1871608365, now seen corresponding path program 1 times [2024-11-19 01:09:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:25,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805768421] [2024-11-19 01:09:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:28,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:28,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805768421] [2024-11-19 01:09:28,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805768421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:28,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:28,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-19 01:09:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996203059] [2024-11-19 01:09:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:28,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:09:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:09:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:09:28,142 INFO L87 Difference]: Start difference. First operand 555 states and 819 transitions. Second operand has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:30,989 INFO L93 Difference]: Finished difference Result 986 states and 1435 transitions. [2024-11-19 01:09:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:09:30,990 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:09:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:30,993 INFO L225 Difference]: With dead ends: 986 [2024-11-19 01:09:30,994 INFO L226 Difference]: Without dead ends: 793 [2024-11-19 01:09:30,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 01:09:30,996 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 1095 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:30,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1922 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 01:09:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-19 01:09:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 537. [2024-11-19 01:09:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 491 states have (on average 1.4378818737270875) internal successors, (706), 492 states have internal predecessors, (706), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-19 01:09:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2024-11-19 01:09:31,019 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 153 [2024-11-19 01:09:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:31,020 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2024-11-19 01:09:31,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2024-11-19 01:09:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:31,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:31,022 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:31,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:09:31,022 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:31,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1359358277, now seen corresponding path program 1 times [2024-11-19 01:09:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081177678] [2024-11-19 01:09:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081177678] [2024-11-19 01:09:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081177678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:32,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:09:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968093535] [2024-11-19 01:09:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:32,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:09:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:09:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:09:32,076 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:32,806 INFO L93 Difference]: Finished difference Result 1195 states and 1747 transitions. [2024-11-19 01:09:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:09:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-11-19 01:09:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:32,810 INFO L225 Difference]: With dead ends: 1195 [2024-11-19 01:09:32,810 INFO L226 Difference]: Without dead ends: 661 [2024-11-19 01:09:32,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:09:32,812 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 79 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:32,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1014 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:09:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-19 01:09:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 592. [2024-11-19 01:09:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 541 states have (on average 1.4177449168207024) internal successors, (767), 543 states have internal predecessors, (767), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-19 01:09:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 859 transitions. [2024-11-19 01:09:32,837 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 859 transitions. Word has length 153 [2024-11-19 01:09:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:32,837 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 859 transitions. [2024-11-19 01:09:32,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 859 transitions. [2024-11-19 01:09:32,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-19 01:09:32,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:32,839 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:32,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:09:32,839 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:32,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -507311415, now seen corresponding path program 1 times [2024-11-19 01:09:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110004224] [2024-11-19 01:09:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110004224] [2024-11-19 01:09:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110004224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:34,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:09:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822459147] [2024-11-19 01:09:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:34,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:09:34,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:09:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:09:34,173 INFO L87 Difference]: Start difference. First operand 592 states and 859 transitions. Second operand has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:35,006 INFO L93 Difference]: Finished difference Result 1287 states and 1867 transitions. [2024-11-19 01:09:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:09:35,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-19 01:09:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:35,010 INFO L225 Difference]: With dead ends: 1287 [2024-11-19 01:09:35,010 INFO L226 Difference]: Without dead ends: 698 [2024-11-19 01:09:35,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:09:35,012 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 62 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:35,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1287 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:09:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-19 01:09:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 628. [2024-11-19 01:09:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 577 states have (on average 1.4211438474870017) internal successors, (820), 579 states have internal predecessors, (820), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-19 01:09:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 912 transitions. [2024-11-19 01:09:35,040 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 912 transitions. Word has length 153 [2024-11-19 01:09:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:35,042 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 912 transitions. [2024-11-19 01:09:35,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-19 01:09:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 912 transitions. [2024-11-19 01:09:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 01:09:35,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:35,045 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:35,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 01:09:35,045 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:35,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1669219568, now seen corresponding path program 1 times [2024-11-19 01:09:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808766435] [2024-11-19 01:09:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:35,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808766435] [2024-11-19 01:09:35,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808766435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:09:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725792487] [2024-11-19 01:09:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:35,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:09:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:09:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:09:35,119 INFO L87 Difference]: Start difference. First operand 628 states and 912 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:09:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:35,191 INFO L93 Difference]: Finished difference Result 1248 states and 1813 transitions. [2024-11-19 01:09:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:09:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2024-11-19 01:09:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:35,194 INFO L225 Difference]: With dead ends: 1248 [2024-11-19 01:09:35,194 INFO L226 Difference]: Without dead ends: 623 [2024-11-19 01:09:35,196 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 [2024-11-19 01:09:35,196 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:35,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:09:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-19 01:09:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2024-11-19 01:09:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 572 states have (on average 1.416083916083916) internal successors, (810), 574 states have internal predecessors, (810), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-19 01:09:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 902 transitions. [2024-11-19 01:09:35,218 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 902 transitions. Word has length 154 [2024-11-19 01:09:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:35,218 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 902 transitions. [2024-11-19 01:09:35,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-19 01:09:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 902 transitions. [2024-11-19 01:09:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-19 01:09:35,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:35,219 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:35,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:09:35,220 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:35,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1902565229, now seen corresponding path program 1 times [2024-11-19 01:09:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697918645] [2024-11-19 01:09:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697918645] [2024-11-19 01:09:36,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697918645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:36,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:09:36,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3036842] [2024-11-19 01:09:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:36,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:09:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:09:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:09:36,709 INFO L87 Difference]: Start difference. First operand 623 states and 902 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:37,946 INFO L93 Difference]: Finished difference Result 1377 states and 1992 transitions. [2024-11-19 01:09:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:09:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-19 01:09:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:37,953 INFO L225 Difference]: With dead ends: 1377 [2024-11-19 01:09:37,953 INFO L226 Difference]: Without dead ends: 757 [2024-11-19 01:09:37,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:09:37,956 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 74 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:37,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1795 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 01:09:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-11-19 01:09:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 675. [2024-11-19 01:09:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 624 states have (on average 1.4230769230769231) internal successors, (888), 626 states have internal predecessors, (888), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-19 01:09:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 980 transitions. [2024-11-19 01:09:37,981 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 980 transitions. Word has length 155 [2024-11-19 01:09:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:37,982 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 980 transitions. [2024-11-19 01:09:37,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 980 transitions. [2024-11-19 01:09:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-19 01:09:37,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:37,984 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:37,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 01:09:37,985 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:37,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2134236629, now seen corresponding path program 1 times [2024-11-19 01:09:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444138110] [2024-11-19 01:09:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444138110] [2024-11-19 01:09:38,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444138110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:38,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:38,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:09:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973465974] [2024-11-19 01:09:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:38,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:09:38,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:38,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:09:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:09:38,937 INFO L87 Difference]: Start difference. First operand 675 states and 980 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:39,585 INFO L93 Difference]: Finished difference Result 1499 states and 2170 transitions. [2024-11-19 01:09:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:09:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-19 01:09:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:39,590 INFO L225 Difference]: With dead ends: 1499 [2024-11-19 01:09:39,590 INFO L226 Difference]: Without dead ends: 827 [2024-11-19 01:09:39,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:09:39,593 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 78 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:39,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 757 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:09:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-19 01:09:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 823. [2024-11-19 01:09:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 758 states have (on average 1.4116094986807388) internal successors, (1070), 762 states have internal predecessors, (1070), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-19 01:09:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1186 transitions. [2024-11-19 01:09:39,626 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1186 transitions. Word has length 155 [2024-11-19 01:09:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:39,627 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1186 transitions. [2024-11-19 01:09:39,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-19 01:09:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1186 transitions. [2024-11-19 01:09:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-19 01:09:39,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:39,629 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:39,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 01:09:39,630 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:39,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1381284817, now seen corresponding path program 1 times [2024-11-19 01:09:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:39,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811462155] [2024-11-19 01:09:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:09:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 01:09:40,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:09:40,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811462155] [2024-11-19 01:09:40,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811462155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:09:40,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:09:40,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:09:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168360803] [2024-11-19 01:09:40,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:09:40,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:09:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:09:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:09:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:09:40,505 INFO L87 Difference]: Start difference. First operand 823 states and 1186 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:09:40,839 INFO L93 Difference]: Finished difference Result 1823 states and 2626 transitions. [2024-11-19 01:09:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:09:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-19 01:09:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:09:40,844 INFO L225 Difference]: With dead ends: 1823 [2024-11-19 01:09:40,844 INFO L226 Difference]: Without dead ends: 1003 [2024-11-19 01:09:40,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:09:40,846 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 65 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:09:40,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 679 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:09:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-11-19 01:09:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 865. [2024-11-19 01:09:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 800 states have (on average 1.4125) internal successors, (1130), 804 states have internal predecessors, (1130), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-19 01:09:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1246 transitions. [2024-11-19 01:09:40,897 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1246 transitions. Word has length 155 [2024-11-19 01:09:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:09:40,897 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1246 transitions. [2024-11-19 01:09:40,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-19 01:09:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1246 transitions. [2024-11-19 01:09:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-19 01:09:40,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:09:40,900 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:09:40,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 01:09:40,900 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:09:40,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:09:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -469174033, now seen corresponding path program 1 times [2024-11-19 01:09:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:09:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536065570] [2024-11-19 01:09:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:09:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:09:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat