/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:00:23,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:00:23,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:00:23,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:00:23,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:00:23,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:00:23,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:00:23,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:00:23,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:00:23,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:00:23,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:00:23,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:00:23,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:00:23,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:00:23,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:00:23,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:00:23,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:00:23,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:00:23,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:00:23,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:00:23,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:00:23,429 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:00:23,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:00:23,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:00:23,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:00:23,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:00:23,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:00:23,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:00:23,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:00:23,431 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:00:23,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:00:23,432 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:00:23,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:00:23,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:00:23,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:00:23,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:00:23,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:00:23,435 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:00:23,435 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:00:23,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:00:23,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:00:23,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:00:23,693 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:00:23,694 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:00:23,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label43.c [2023-04-02 00:00:25,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:00:25,778 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:00:25,779 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label43.c [2023-04-02 00:00:25,829 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45a22fb3/f941d832c84445fcafac28bc9da37041/FLAGc5f7eca94 [2023-04-02 00:00:25,846 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45a22fb3/f941d832c84445fcafac28bc9da37041 [2023-04-02 00:00:25,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:00:25,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:00:25,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:00:25,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:00:25,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:00:25,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:00:25" (1/1) ... [2023-04-02 00:00:25,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3651eeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:25, skipping insertion in model container [2023-04-02 00:00:25,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:00:25" (1/1) ... [2023-04-02 00:00:25,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:00:26,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:00:26,319 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label43.c[3247,3260] [2023-04-02 00:00:27,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:00:27,478 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:00:27,509 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label43.c[3247,3260] [2023-04-02 00:00:28,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:00:28,248 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:00:28,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28 WrapperNode [2023-04-02 00:00:28,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:00:28,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:00:28,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:00:28,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:00:28,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:00:28,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:00:28,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:00:28,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:00:28,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (1/1) ... [2023-04-02 00:00:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:00:28,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:28,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:00:28,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:00:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:00:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:00:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:00:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-02 00:00:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-02 00:00:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-02 00:00:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-02 00:00:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-02 00:00:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-02 00:00:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:00:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-02 00:00:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-02 00:00:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:00:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:00:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:00:28,996 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:00:29,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:00:36,450 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:00:36,465 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:00:36,466 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 00:00:36,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:00:36 BoogieIcfgContainer [2023-04-02 00:00:36,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:00:36,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:00:36,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:00:36,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:00:36,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:00:25" (1/3) ... [2023-04-02 00:00:36,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a5491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:00:36, skipping insertion in model container [2023-04-02 00:00:36,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:00:28" (2/3) ... [2023-04-02 00:00:36,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a5491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:00:36, skipping insertion in model container [2023-04-02 00:00:36,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:00:36" (3/3) ... [2023-04-02 00:00:36,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label43.c [2023-04-02 00:00:36,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:00:36,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:00:36,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:00:36,560 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@61c7c9e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:00:36,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:00:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 00:00:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 00:00:36,577 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:36,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:36,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:36,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash -176936540, now seen corresponding path program 1 times [2023-04-02 00:00:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734843138] [2023-04-02 00:00:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:36,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:00:37,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:37,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734843138] [2023-04-02 00:00:37,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734843138] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:00:37,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:00:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:00:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722251633] [2023-04-02 00:00:37,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:00:37,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:00:37,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:00:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:00:37,069 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:00:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:52,999 INFO L93 Difference]: Finished difference Result 6573 states and 12489 transitions. [2023-04-02 00:00:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:00:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-04-02 00:00:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:53,052 INFO L225 Difference]: With dead ends: 6573 [2023-04-02 00:00:53,052 INFO L226 Difference]: Without dead ends: 4728 [2023-04-02 00:00:53,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:00:53,072 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 7978 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8425 mSolverCounterSat, 3829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7978 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 12254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3829 IncrementalHoareTripleChecker+Valid, 8425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:53,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7978 Valid, 462 Invalid, 12254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3829 Valid, 8425 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-04-02 00:00:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2023-04-02 00:00:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4625. [2023-04-02 00:00:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4570 states have (on average 1.7671772428884027) internal successors, (8076), 4573 states have internal predecessors, (8076), 20 states have call successors, (20), 20 states have call predecessors, (20), 34 states have return successors, (70), 31 states have call predecessors, (70), 19 states have call successors, (70) [2023-04-02 00:00:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 8166 transitions. [2023-04-02 00:00:53,266 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 8166 transitions. Word has length 28 [2023-04-02 00:00:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:53,267 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 8166 transitions. [2023-04-02 00:00:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:00:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 8166 transitions. [2023-04-02 00:00:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 00:00:53,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:53,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:53,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:00:53,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:53,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 140678903, now seen corresponding path program 1 times [2023-04-02 00:00:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109386781] [2023-04-02 00:00:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:53,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:53,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:00:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109386781] [2023-04-02 00:00:53,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109386781] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:00:53,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:00:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 00:00:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434472813] [2023-04-02 00:00:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:00:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 00:00:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 00:00:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:00:53,692 INFO L87 Difference]: Start difference. First operand 4625 states and 8166 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:10,511 INFO L93 Difference]: Finished difference Result 17990 states and 32752 transitions. [2023-04-02 00:01:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 00:01:10,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2023-04-02 00:01:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:10,599 INFO L225 Difference]: With dead ends: 17990 [2023-04-02 00:01:10,599 INFO L226 Difference]: Without dead ends: 13371 [2023-04-02 00:01:10,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-02 00:01:10,619 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 14192 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 12496 mSolverCounterSat, 4003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14192 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 16499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4003 IncrementalHoareTripleChecker+Valid, 12496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:10,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14192 Valid, 1004 Invalid, 16499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4003 Valid, 12496 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-04-02 00:01:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2023-04-02 00:01:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 13293. [2023-04-02 00:01:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13293 states, 13058 states have (on average 1.5899831520906724) internal successors, (20762), 13081 states have internal predecessors, (20762), 56 states have call successors, (56), 56 states have call predecessors, (56), 178 states have return successors, (814), 155 states have call predecessors, (814), 55 states have call successors, (814) [2023-04-02 00:01:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13293 states to 13293 states and 21632 transitions. [2023-04-02 00:01:10,965 INFO L78 Accepts]: Start accepts. Automaton has 13293 states and 21632 transitions. Word has length 103 [2023-04-02 00:01:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:10,966 INFO L495 AbstractCegarLoop]: Abstraction has 13293 states and 21632 transitions. [2023-04-02 00:01:10,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 13293 states and 21632 transitions. [2023-04-02 00:01:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 00:01:10,968 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:10,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:10,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:01:10,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:10,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 977196075, now seen corresponding path program 1 times [2023-04-02 00:01:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127662978] [2023-04-02 00:01:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127662978] [2023-04-02 00:01:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127662978] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:11,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:11,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:01:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328187984] [2023-04-02 00:01:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:11,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:01:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:01:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:11,234 INFO L87 Difference]: Start difference. First operand 13293 states and 21632 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:25,084 INFO L93 Difference]: Finished difference Result 40492 states and 68414 transitions. [2023-04-02 00:01:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:01:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 109 [2023-04-02 00:01:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:25,214 INFO L225 Difference]: With dead ends: 40492 [2023-04-02 00:01:25,214 INFO L226 Difference]: Without dead ends: 27205 [2023-04-02 00:01:25,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:01:25,255 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 11285 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 10150 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11285 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 10966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 10150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:25,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11285 Valid, 898 Invalid, 10966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [816 Valid, 10150 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-04-02 00:01:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27205 states. [2023-04-02 00:01:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27205 to 26838. [2023-04-02 00:01:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26838 states, 26178 states have (on average 1.5346856138742455) internal successors, (40175), 26275 states have internal predecessors, (40175), 110 states have call successors, (110), 110 states have call predecessors, (110), 549 states have return successors, (3055), 452 states have call predecessors, (3055), 109 states have call successors, (3055) [2023-04-02 00:01:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26838 states to 26838 states and 43340 transitions. [2023-04-02 00:01:25,996 INFO L78 Accepts]: Start accepts. Automaton has 26838 states and 43340 transitions. Word has length 109 [2023-04-02 00:01:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:25,998 INFO L495 AbstractCegarLoop]: Abstraction has 26838 states and 43340 transitions. [2023-04-02 00:01:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 26838 states and 43340 transitions. [2023-04-02 00:01:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-04-02 00:01:26,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:26,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:26,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:01:26,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:26,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash -681565766, now seen corresponding path program 1 times [2023-04-02 00:01:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256164227] [2023-04-02 00:01:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:26,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 00:01:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 00:01:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256164227] [2023-04-02 00:01:26,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256164227] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:01:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151124737] [2023-04-02 00:01:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:26,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:01:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:01:26,539 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) [2023-04-02 00:01:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 00:01:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:26,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 00:01:26,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:01:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 00:01:26,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:01:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151124737] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:01:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-02 00:01:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929992315] [2023-04-02 00:01:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:01:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:01:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:01:26,919 INFO L87 Difference]: Start difference. First operand 26838 states and 43340 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:01:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:37,089 INFO L93 Difference]: Finished difference Result 81324 states and 136764 transitions. [2023-04-02 00:01:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 00:01:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 214 [2023-04-02 00:01:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:37,479 INFO L225 Difference]: With dead ends: 81324 [2023-04-02 00:01:37,480 INFO L226 Difference]: Without dead ends: 54492 [2023-04-02 00:01:37,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:01:37,542 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 5627 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 7755 mSolverCounterSat, 3191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5627 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 10946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3191 IncrementalHoareTripleChecker+Valid, 7755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:37,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5627 Valid, 1186 Invalid, 10946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3191 Valid, 7755 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-02 00:01:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54492 states. [2023-04-02 00:01:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54492 to 46773. [2023-04-02 00:01:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46773 states, 45348 states have (on average 1.368924759636588) internal successors, (62078), 45585 states have internal predecessors, (62078), 188 states have call successors, (188), 188 states have call predecessors, (188), 1236 states have return successors, (8198), 999 states have call predecessors, (8198), 187 states have call successors, (8198) [2023-04-02 00:01:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46773 states to 46773 states and 70464 transitions. [2023-04-02 00:01:38,796 INFO L78 Accepts]: Start accepts. Automaton has 46773 states and 70464 transitions. Word has length 214 [2023-04-02 00:01:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 46773 states and 70464 transitions. [2023-04-02 00:01:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:01:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 46773 states and 70464 transitions. [2023-04-02 00:01:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-04-02 00:01:38,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:38,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:38,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 00:01:39,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:01:39,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:39,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1744548247, now seen corresponding path program 1 times [2023-04-02 00:01:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747105536] [2023-04-02 00:01:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747105536] [2023-04-02 00:01:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747105536] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:01:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159205277] [2023-04-02 00:01:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:01:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:41,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:01:41,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:41,037 INFO L87 Difference]: Start difference. First operand 46773 states and 70464 transitions. Second operand has 7 states, 6 states have (on average 40.833333333333336) internal successors, (245), 4 states have internal predecessors, (245), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:57,394 INFO L93 Difference]: Finished difference Result 114393 states and 181821 transitions. [2023-04-02 00:01:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:01:57,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 40.833333333333336) internal successors, (245), 4 states have internal predecessors, (245), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 251 [2023-04-02 00:01:57,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:57,733 INFO L225 Difference]: With dead ends: 114393 [2023-04-02 00:01:57,734 INFO L226 Difference]: Without dead ends: 67626 [2023-04-02 00:01:57,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:01:57,792 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 5291 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 11383 mSolverCounterSat, 2486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5293 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 13869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2486 IncrementalHoareTripleChecker+Valid, 11383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:57,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5293 Valid, 765 Invalid, 13869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2486 Valid, 11383 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2023-04-02 00:01:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67626 states. [2023-04-02 00:01:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67626 to 66018. [2023-04-02 00:01:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66018 states, 64007 states have (on average 1.2940147171403127) internal successors, (82826), 64366 states have internal predecessors, (82826), 266 states have call successors, (266), 266 states have call predecessors, (266), 1744 states have return successors, (11661), 1385 states have call predecessors, (11661), 265 states have call successors, (11661) [2023-04-02 00:02:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66018 states to 66018 states and 94753 transitions. [2023-04-02 00:02:00,424 INFO L78 Accepts]: Start accepts. Automaton has 66018 states and 94753 transitions. Word has length 251 [2023-04-02 00:02:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:02:00,425 INFO L495 AbstractCegarLoop]: Abstraction has 66018 states and 94753 transitions. [2023-04-02 00:02:00,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 40.833333333333336) internal successors, (245), 4 states have internal predecessors, (245), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:02:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 66018 states and 94753 transitions. [2023-04-02 00:02:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2023-04-02 00:02:00,458 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:02:00,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:02:00,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 00:02:00,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:02:00,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:02:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1840187336, now seen corresponding path program 1 times [2023-04-02 00:02:00,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:02:00,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233784280] [2023-04-02 00:02:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:02:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:02:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:02:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:02:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:02:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 00:02:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:02:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233784280] [2023-04-02 00:02:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233784280] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:02:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945377622] [2023-04-02 00:02:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:02:03,264 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) [2023-04-02 00:02:03,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 00:02:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:03,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 00:02:03,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:02:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 00:02:06,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:02:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 45 proven. 217 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 00:02:14,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945377622] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:02:14,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:02:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 13 [2023-04-02 00:02:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95697442] [2023-04-02 00:02:14,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:02:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 00:02:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:02:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 00:02:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-02 00:02:14,778 INFO L87 Difference]: Start difference. First operand 66018 states and 94753 transitions. Second operand has 13 states, 13 states have (on average 149.46153846153845) internal successors, (1943), 11 states have internal predecessors, (1943), 7 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-02 00:02:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:02:59,382 INFO L93 Difference]: Finished difference Result 299417 states and 478304 transitions. [2023-04-02 00:02:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-04-02 00:02:59,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 149.46153846153845) internal successors, (1943), 11 states have internal predecessors, (1943), 7 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 746 [2023-04-02 00:02:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:03:00,631 INFO L225 Difference]: With dead ends: 299417 [2023-04-02 00:03:00,631 INFO L226 Difference]: Without dead ends: 233405 [2023-04-02 00:03:00,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 1509 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=797, Invalid=4173, Unknown=0, NotChecked=0, Total=4970 [2023-04-02 00:03:00,812 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 29017 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 36244 mSolverCounterSat, 8399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29026 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 44643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8399 IncrementalHoareTripleChecker+Valid, 36244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:03:00,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29026 Valid, 2373 Invalid, 44643 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8399 Valid, 36244 Invalid, 0 Unknown, 0 Unchecked, 39.2s Time] [2023-04-02 00:03:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233405 states. [2023-04-02 00:03:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233405 to 215158. [2023-04-02 00:03:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215158 states, 209239 states have (on average 1.2176410707372909) internal successors, (254778), 210314 states have internal predecessors, (254778), 879 states have call successors, (879), 878 states have call predecessors, (879), 5039 states have return successors, (53828), 3965 states have call predecessors, (53828), 878 states have call successors, (53828) [2023-04-02 00:03:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215158 states to 215158 states and 309485 transitions. [2023-04-02 00:03:07,292 INFO L78 Accepts]: Start accepts. Automaton has 215158 states and 309485 transitions. Word has length 746 [2023-04-02 00:03:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:03:07,295 INFO L495 AbstractCegarLoop]: Abstraction has 215158 states and 309485 transitions. [2023-04-02 00:03:07,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.46153846153845) internal successors, (1943), 11 states have internal predecessors, (1943), 7 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-02 00:03:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 215158 states and 309485 transitions. [2023-04-02 00:03:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-04-02 00:03:07,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:03:07,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:03:07,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 00:03:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-02 00:03:07,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:03:07,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:03:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1394338260, now seen corresponding path program 1 times [2023-04-02 00:03:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:03:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360385245] [2023-04-02 00:03:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:03:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:03:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:03:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:03:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:03:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 00:03:09,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:03:09,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360385245] [2023-04-02 00:03:09,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360385245] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:03:09,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544460412] [2023-04-02 00:03:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:09,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:03:09,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:03:09,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 00:03:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:09,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:03:09,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:03:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:03:09,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:03:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:03:10,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544460412] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:03:10,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:03:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-04-02 00:03:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092182051] [2023-04-02 00:03:10,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:03:10,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 00:03:10,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:03:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 00:03:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:03:10,295 INFO L87 Difference]: Start difference. First operand 215158 states and 309485 transitions. Second operand has 11 states, 11 states have (on average 111.0) internal successors, (1221), 9 states have internal predecessors, (1221), 4 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 00:03:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:03:25,508 INFO L93 Difference]: Finished difference Result 471677 states and 700206 transitions. [2023-04-02 00:03:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 00:03:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 111.0) internal successors, (1221), 9 states have internal predecessors, (1221), 4 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 760 [2023-04-02 00:03:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:03:26,977 INFO L225 Difference]: With dead ends: 471677 [2023-04-02 00:03:26,977 INFO L226 Difference]: Without dead ends: 256529 [2023-04-02 00:03:27,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1543 GetRequests, 1526 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-04-02 00:03:27,478 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 8357 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11647 mSolverCounterSat, 3320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8357 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 14967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3320 IncrementalHoareTripleChecker+Valid, 11647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-04-02 00:03:27,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8357 Valid, 1083 Invalid, 14967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3320 Valid, 11647 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-04-02 00:03:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256529 states. [2023-04-02 00:03:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256529 to 242489. [2023-04-02 00:03:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242489 states, 235980 states have (on average 1.1636748877023477) internal successors, (274604), 237155 states have internal predecessors, (274604), 992 states have call successors, (992), 992 states have call predecessors, (992), 5516 states have return successors, (51581), 4341 states have call predecessors, (51581), 991 states have call successors, (51581) [2023-04-02 00:03:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242489 states to 242489 states and 327177 transitions. [2023-04-02 00:03:35,243 INFO L78 Accepts]: Start accepts. Automaton has 242489 states and 327177 transitions. Word has length 760 [2023-04-02 00:03:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:03:35,245 INFO L495 AbstractCegarLoop]: Abstraction has 242489 states and 327177 transitions. [2023-04-02 00:03:35,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.0) internal successors, (1221), 9 states have internal predecessors, (1221), 4 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 00:03:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 242489 states and 327177 transitions. [2023-04-02 00:03:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2023-04-02 00:03:35,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:03:35,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:03:35,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 00:03:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:35,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:03:35,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:03:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1235671696, now seen corresponding path program 1 times [2023-04-02 00:03:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:03:35,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776473243] [2023-04-02 00:03:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:03:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:03:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:03:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:03:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 00:03:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:36,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-02 00:03:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-02 00:03:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:03:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776473243] [2023-04-02 00:03:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776473243] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:03:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385999761] [2023-04-02 00:03:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:37,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:03:37,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:03:37,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 00:03:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:37,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:03:37,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:03:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-02 00:03:37,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:03:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385999761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:03:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:03:37,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-02 00:03:37,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581118998] [2023-04-02 00:03:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:03:37,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 00:03:37,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:03:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 00:03:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:03:37,523 INFO L87 Difference]: Start difference. First operand 242489 states and 327177 transitions. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 00:03:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:03:48,072 INFO L93 Difference]: Finished difference Result 555323 states and 757067 transitions. [2023-04-02 00:03:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 00:03:48,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 858 [2023-04-02 00:03:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:03:49,347 INFO L225 Difference]: With dead ends: 555323 [2023-04-02 00:03:49,347 INFO L226 Difference]: Without dead ends: 290427 [2023-04-02 00:03:49,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:03:49,707 INFO L413 NwaCegarLoop]: 2705 mSDtfsCounter, 1673 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3703 mSolverCounterSat, 1578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 5281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1578 IncrementalHoareTripleChecker+Valid, 3703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:03:49,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 2875 Invalid, 5281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1578 Valid, 3703 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-02 00:03:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290427 states. [2023-04-02 00:03:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290427 to 286217. [2023-04-02 00:03:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286217 states, 279575 states have (on average 1.0685755164088349) internal successors, (298747), 280716 states have internal predecessors, (298747), 1184 states have call successors, (1184), 1184 states have call predecessors, (1184), 5457 states have return successors, (45977), 4316 states have call predecessors, (45977), 1183 states have call successors, (45977) [2023-04-02 00:03:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286217 states to 286217 states and 345908 transitions. [2023-04-02 00:03:57,415 INFO L78 Accepts]: Start accepts. Automaton has 286217 states and 345908 transitions. Word has length 858 [2023-04-02 00:03:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:03:57,417 INFO L495 AbstractCegarLoop]: Abstraction has 286217 states and 345908 transitions. [2023-04-02 00:03:57,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 00:03:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 286217 states and 345908 transitions. [2023-04-02 00:03:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2023-04-02 00:03:57,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:03:57,503 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:03:57,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 00:03:57,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:57,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:03:57,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:03:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1654603744, now seen corresponding path program 1 times [2023-04-02 00:03:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:03:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513403140] [2023-04-02 00:03:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:03:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat