/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/Problem04_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:45:55,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:45:55,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:45:55,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:45:55,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:45:55,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:45:55,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:45:55,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:45:55,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:45:55,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:45:55,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:45:55,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:45:55,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:45:55,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:45:55,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:45:55,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:45:55,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:45:55,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:45:55,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:45:55,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:45:55,486 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 [2023-04-01 20:45:55,512 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:45:55,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:45:55,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:45:55,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:45:55,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:45:55,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:45:55,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:45:55,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:45:55,515 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:45:55,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:45:55,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:45:55,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:45:55,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:45:55,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:45:55,518 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:45:55,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:45:55,519 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:45:55,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:45:55,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:45:55,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:45:55,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:45:55,747 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:45:55,747 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:45:55,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label44.c [2023-04-01 20:45:56,994 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:45:57,444 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:45:57,445 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label44.c [2023-04-01 20:45:57,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01ac6902/bed5ec0bcd064bef947334e7594369f1/FLAG3b97c7342 [2023-04-01 20:45:57,496 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01ac6902/bed5ec0bcd064bef947334e7594369f1 [2023-04-01 20:45:57,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:45:57,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:45:57,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:45:57,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:45:57,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:45:57,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:45:57" (1/1) ... [2023-04-01 20:45:57,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58145934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:57, skipping insertion in model container [2023-04-01 20:45:57,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:45:57" (1/1) ... [2023-04-01 20:45:57,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:45:57,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:45:58,577 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/Problem04_label44.c[179919,179932] [2023-04-01 20:45:58,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:45:58,604 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:45:59,002 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/Problem04_label44.c[179919,179932] [2023-04-01 20:45:59,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:45:59,033 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:45:59,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59 WrapperNode [2023-04-01 20:45:59,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:45:59,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:45:59,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:45:59,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:45:59,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:45:59,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:45:59,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:45:59,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:45:59,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (1/1) ... [2023-04-01 20:45:59,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:45:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:59,367 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) [2023-04-01 20:45:59,376 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 [2023-04-01 20:45:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:45:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:45:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:45:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:45:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:45:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:45:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:45:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:45:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:45:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:45:59,497 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:45:59,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:46:03,095 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:46:03,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:46:03,109 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:46:03,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:46:03 BoogieIcfgContainer [2023-04-01 20:46:03,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:46:03,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:46:03,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:46:03,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:46:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:45:57" (1/3) ... [2023-04-01 20:46:03,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266b9921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:46:03, skipping insertion in model container [2023-04-01 20:46:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:45:59" (2/3) ... [2023-04-01 20:46:03,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266b9921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:46:03, skipping insertion in model container [2023-04-01 20:46:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:46:03" (3/3) ... [2023-04-01 20:46:03,119 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label44.c [2023-04-01 20:46:03,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:46:03,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:46:03,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:46:03,199 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;@273d382e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:46:03,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:46:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 20:46:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2023-04-01 20:46:03,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:03,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:03,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:03,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1506484104, now seen corresponding path program 1 times [2023-04-01 20:46:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692304651] [2023-04-01 20:46:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:46:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692304651] [2023-04-01 20:46:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692304651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:06,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:46:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 20:46:06,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226778480] [2023-04-01 20:46:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 20:46:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 20:46:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:46:06,767 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 2 states have internal predecessors, (787), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:46:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:12,305 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2023-04-01 20:46:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:46:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 2 states have internal predecessors, (787), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 794 [2023-04-01 20:46:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:12,336 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:46:12,336 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:46:12,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:46:12,350 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2023 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:12,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 39 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 20:46:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:46:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2023-04-01 20:46:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1663 states have (on average 1.7690920024052916) internal successors, (2942), 1664 states have internal predecessors, (2942), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 20:46:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2023-04-01 20:46:12,472 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 794 [2023-04-01 20:46:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:12,475 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2023-04-01 20:46:12,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 2 states have internal predecessors, (787), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:46:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2023-04-01 20:46:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2023-04-01 20:46:12,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:12,498 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:46:12,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:12,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2120323368, now seen corresponding path program 1 times [2023-04-01 20:46:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:12,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559012238] [2023-04-01 20:46:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:46:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559012238] [2023-04-01 20:46:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559012238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:46:13,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:46:13,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753351421] [2023-04-01 20:46:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:46:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:46:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:46:14,003 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand has 8 states, 7 states have (on average 113.42857142857143) internal successors, (794), 5 states have internal predecessors, (794), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:46:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:20,188 INFO L93 Difference]: Finished difference Result 5160 states and 9152 transitions. [2023-04-01 20:46:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:46:20,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 113.42857142857143) internal successors, (794), 5 states have internal predecessors, (794), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 803 [2023-04-01 20:46:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:20,206 INFO L225 Difference]: With dead ends: 5160 [2023-04-01 20:46:20,206 INFO L226 Difference]: Without dead ends: 3479 [2023-04-01 20:46:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:46:20,211 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3107 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6976 mSolverCounterSat, 1459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 8435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1459 IncrementalHoareTripleChecker+Valid, 6976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:20,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 133 Invalid, 8435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1459 Valid, 6976 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 20:46:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-04-01 20:46:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3418. [2023-04-01 20:46:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3355 states have (on average 1.6748137108792847) internal successors, (5619), 3362 states have internal predecessors, (5619), 18 states have call successors, (18), 18 states have call predecessors, (18), 44 states have return successors, (106), 37 states have call predecessors, (106), 17 states have call successors, (106) [2023-04-01 20:46:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5743 transitions. [2023-04-01 20:46:20,330 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5743 transitions. Word has length 803 [2023-04-01 20:46:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:20,330 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 5743 transitions. [2023-04-01 20:46:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 113.42857142857143) internal successors, (794), 5 states have internal predecessors, (794), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:46:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5743 transitions. [2023-04-01 20:46:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2023-04-01 20:46:20,358 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:20,359 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:46:20,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:20,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -927951166, now seen corresponding path program 1 times [2023-04-01 20:46:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763855596] [2023-04-01 20:46:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:20,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:46:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763855596] [2023-04-01 20:46:21,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763855596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:46:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:46:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178175659] [2023-04-01 20:46:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:46:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:46:21,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:46:21,655 INFO L87 Difference]: Start difference. First operand 3418 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 115.0) internal successors, (805), 5 states have internal predecessors, (805), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:46:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:29,002 INFO L93 Difference]: Finished difference Result 13938 states and 24261 transitions. [2023-04-01 20:46:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:46:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 115.0) internal successors, (805), 5 states have internal predecessors, (805), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 814 [2023-04-01 20:46:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:29,054 INFO L225 Difference]: With dead ends: 13938 [2023-04-01 20:46:29,054 INFO L226 Difference]: Without dead ends: 10526 [2023-04-01 20:46:29,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:46:29,069 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7581 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6326 mSolverCounterSat, 2188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7581 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 8514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 6326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:29,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7581 Valid, 153 Invalid, 8514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2188 Valid, 6326 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-04-01 20:46:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10526 states. [2023-04-01 20:46:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10526 to 10479. [2023-04-01 20:46:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10479 states, 10206 states have (on average 1.4618851655888694) internal successors, (14920), 10262 states have internal predecessors, (14920), 50 states have call successors, (50), 50 states have call predecessors, (50), 222 states have return successors, (1111), 166 states have call predecessors, (1111), 49 states have call successors, (1111) [2023-04-01 20:46:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 16081 transitions. [2023-04-01 20:46:29,393 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 16081 transitions. Word has length 814 [2023-04-01 20:46:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:29,394 INFO L495 AbstractCegarLoop]: Abstraction has 10479 states and 16081 transitions. [2023-04-01 20:46:29,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 115.0) internal successors, (805), 5 states have internal predecessors, (805), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:46:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 16081 transitions. [2023-04-01 20:46:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2023-04-01 20:46:29,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:29,424 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:29,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:46:29,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:29,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1833151956, now seen corresponding path program 1 times [2023-04-01 20:46:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419084284] [2023-04-01 20:46:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:46:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:46:30,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:30,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419084284] [2023-04-01 20:46:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419084284] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043361327] [2023-04-01 20:46:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:30,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:30,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:30,733 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) [2023-04-01 20:46:30,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:46:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:31,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:31,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:46:31,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:46:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043361327] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:31,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:31,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:46:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916808919] [2023-04-01 20:46:31,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:46:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:46:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:46:31,604 INFO L87 Difference]: Start difference. First operand 10479 states and 16081 transitions. Second operand has 12 states, 12 states have (on average 82.83333333333333) internal successors, (994), 10 states have internal predecessors, (994), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:46:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:41,594 INFO L93 Difference]: Finished difference Result 50893 states and 83997 transitions. [2023-04-01 20:46:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 20:46:41,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 82.83333333333333) internal successors, (994), 10 states have internal predecessors, (994), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 882 [2023-04-01 20:46:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:41,768 INFO L225 Difference]: With dead ends: 50893 [2023-04-01 20:46:41,769 INFO L226 Difference]: Without dead ends: 40420 [2023-04-01 20:46:41,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1802 GetRequests, 1771 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:46:41,811 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 12391 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 9277 mSolverCounterSat, 3077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12391 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 12354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3077 IncrementalHoareTripleChecker+Valid, 9277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:41,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12391 Valid, 325 Invalid, 12354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3077 Valid, 9277 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 20:46:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40420 states. [2023-04-01 20:46:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40420 to 34440. [2023-04-01 20:46:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34440 states, 33709 states have (on average 1.3323741434038388) internal successors, (44913), 33858 states have internal predecessors, (44913), 162 states have call successors, (162), 162 states have call predecessors, (162), 568 states have return successors, (5588), 419 states have call predecessors, (5588), 161 states have call successors, (5588) [2023-04-01 20:46:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34440 states to 34440 states and 50663 transitions. [2023-04-01 20:46:42,891 INFO L78 Accepts]: Start accepts. Automaton has 34440 states and 50663 transitions. Word has length 882 [2023-04-01 20:46:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:42,891 INFO L495 AbstractCegarLoop]: Abstraction has 34440 states and 50663 transitions. [2023-04-01 20:46:42,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.83333333333333) internal successors, (994), 10 states have internal predecessors, (994), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:46:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 34440 states and 50663 transitions. [2023-04-01 20:46:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2023-04-01 20:46:42,983 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:42,985 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:42,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 20:46:43,191 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 [2023-04-01 20:46:43,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:43,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1348246294, now seen corresponding path program 1 times [2023-04-01 20:46:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814211958] [2023-04-01 20:46:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-01 20:46:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-01 20:46:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 201 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 20:46:44,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:44,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814211958] [2023-04-01 20:46:44,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814211958] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:44,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376259199] [2023-04-01 20:46:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:44,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:44,653 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) [2023-04-01 20:46:44,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:46:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:45,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:46:45,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-04-01 20:46:45,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:46:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376259199] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:45,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:46:45,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:46:45,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136559195] [2023-04-01 20:46:45,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:45,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:46:45,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:46:45,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:46:45,119 INFO L87 Difference]: Start difference. First operand 34440 states and 50663 transitions. Second operand has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:46:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:49,016 INFO L93 Difference]: Finished difference Result 86689 states and 129826 transitions. [2023-04-01 20:46:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:46:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1004 [2023-04-01 20:46:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:49,222 INFO L225 Difference]: With dead ends: 86689 [2023-04-01 20:46:49,222 INFO L226 Difference]: Without dead ends: 52255 [2023-04-01 20:46:49,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:46:49,288 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2963 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 1980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1980 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:49,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 106 Invalid, 5787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1980 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 20:46:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52255 states. [2023-04-01 20:46:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52255 to 49603. [2023-04-01 20:46:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49603 states, 48672 states have (on average 1.217619986850756) internal successors, (59264), 48838 states have internal predecessors, (59264), 234 states have call successors, (234), 234 states have call predecessors, (234), 696 states have return successors, (6273), 530 states have call predecessors, (6273), 233 states have call successors, (6273) [2023-04-01 20:46:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49603 states to 49603 states and 65771 transitions. [2023-04-01 20:46:50,808 INFO L78 Accepts]: Start accepts. Automaton has 49603 states and 65771 transitions. Word has length 1004 [2023-04-01 20:46:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:50,809 INFO L495 AbstractCegarLoop]: Abstraction has 49603 states and 65771 transitions. [2023-04-01 20:46:50,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:46:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 49603 states and 65771 transitions. [2023-04-01 20:46:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2023-04-01 20:46:50,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:50,886 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:46:50,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:51,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:51,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:51,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 366628576, now seen corresponding path program 1 times [2023-04-01 20:46:51,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:51,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816218653] [2023-04-01 20:46:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:46:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 20:46:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-04-01 20:46:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 356 proven. 203 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 20:46:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816218653] [2023-04-01 20:46:54,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816218653] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:54,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101379854] [2023-04-01 20:46:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:54,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:54,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:54,484 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) [2023-04-01 20:46:54,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:46:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:54,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:54,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 605 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 20:46:55,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 555 proven. 28 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 20:46:55,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101379854] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:55,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:55,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:46:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679933889] [2023-04-01 20:46:55,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:55,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:46:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:46:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:46:55,576 INFO L87 Difference]: Start difference. First operand 49603 states and 65771 transitions. Second operand has 12 states, 12 states have (on average 114.25) internal successors, (1371), 10 states have internal predecessors, (1371), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:47:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:11,423 INFO L93 Difference]: Finished difference Result 163477 states and 221005 transitions. [2023-04-01 20:47:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-01 20:47:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 114.25) internal successors, (1371), 10 states have internal predecessors, (1371), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1162 [2023-04-01 20:47:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:11,859 INFO L225 Difference]: With dead ends: 163477 [2023-04-01 20:47:11,859 INFO L226 Difference]: Without dead ends: 113880 [2023-04-01 20:47:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2406 GetRequests, 2360 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1714, Unknown=0, NotChecked=0, Total=2162 [2023-04-01 20:47:12,376 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 9654 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 16396 mSolverCounterSat, 8614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9654 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 25010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8614 IncrementalHoareTripleChecker+Valid, 16396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:12,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9654 Valid, 382 Invalid, 25010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8614 Valid, 16396 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-04-01 20:47:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113880 states. [2023-04-01 20:47:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113880 to 110326. [2023-04-01 20:47:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110326 states, 108241 states have (on average 1.152613150285012) internal successors, (124760), 108656 states have internal predecessors, (124760), 518 states have call successors, (518), 518 states have call predecessors, (518), 1566 states have return successors, (15169), 1151 states have call predecessors, (15169), 517 states have call successors, (15169) [2023-04-01 20:47:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110326 states to 110326 states and 140447 transitions. [2023-04-01 20:47:15,264 INFO L78 Accepts]: Start accepts. Automaton has 110326 states and 140447 transitions. Word has length 1162 [2023-04-01 20:47:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 110326 states and 140447 transitions. [2023-04-01 20:47:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 114.25) internal successors, (1371), 10 states have internal predecessors, (1371), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:47:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 110326 states and 140447 transitions. [2023-04-01 20:47:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2023-04-01 20:47:15,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:15,561 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:15,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 20:47:15,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:15,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:15,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1110952178, now seen corresponding path program 1 times [2023-04-01 20:47:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:15,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042977200] [2023-04-01 20:47:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:47:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:47:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-01 20:47:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2023-04-01 20:47:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 624 proven. 190 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 20:47:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:18,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042977200] [2023-04-01 20:47:18,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042977200] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545582885] [2023-04-01 20:47:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:18,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:18,197 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) [2023-04-01 20:47:18,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:47:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:18,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:47:18,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 800 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-04-01 20:47:18,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:47:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 629 proven. 186 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-04-01 20:47:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545582885] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:47:19,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:47:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:47:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351364777] [2023-04-01 20:47:19,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:47:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:47:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:47:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:47:19,147 INFO L87 Difference]: Start difference. First operand 110326 states and 140447 transitions. Second operand has 13 states, 13 states have (on average 98.61538461538461) internal successors, (1282), 11 states have internal predecessors, (1282), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:47:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:36,147 INFO L93 Difference]: Finished difference Result 265505 states and 348580 transitions. [2023-04-01 20:47:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:47:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 98.61538461538461) internal successors, (1282), 11 states have internal predecessors, (1282), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1294 [2023-04-01 20:47:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:36,968 INFO L225 Difference]: With dead ends: 265505 [2023-04-01 20:47:36,969 INFO L226 Difference]: Without dead ends: 155185 [2023-04-01 20:47:37,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2652 GetRequests, 2616 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:47:37,096 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 15201 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 20048 mSolverCounterSat, 5421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15213 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 25469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5421 IncrementalHoareTripleChecker+Valid, 20048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15213 Valid, 360 Invalid, 25469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5421 Valid, 20048 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-01 20:47:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155185 states. [2023-04-01 20:47:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155185 to 153413. [2023-04-01 20:47:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153413 states, 150480 states have (on average 1.1083333333333334) internal successors, (166782), 151003 states have internal predecessors, (166782), 869 states have call successors, (869), 718 states have call predecessors, (869), 2063 states have return successors, (23859), 1691 states have call predecessors, (23859), 868 states have call successors, (23859) [2023-04-01 20:47:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153413 states to 153413 states and 191510 transitions. [2023-04-01 20:47:40,711 INFO L78 Accepts]: Start accepts. Automaton has 153413 states and 191510 transitions. Word has length 1294 [2023-04-01 20:47:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:40,711 INFO L495 AbstractCegarLoop]: Abstraction has 153413 states and 191510 transitions. [2023-04-01 20:47:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.61538461538461) internal successors, (1282), 11 states have internal predecessors, (1282), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:47:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 153413 states and 191510 transitions. [2023-04-01 20:47:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1492 [2023-04-01 20:47:41,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:41,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:41,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:47:41,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:41,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:41,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1821591618, now seen corresponding path program 1 times [2023-04-01 20:47:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994109276] [2023-04-01 20:47:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:43,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:47:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-04-01 20:47:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 685 proven. 353 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-04-01 20:47:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994109276] [2023-04-01 20:47:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994109276] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:44,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734404354] [2023-04-01 20:47:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:44,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:44,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:47:44,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:47:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:45,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:47:45,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-04-01 20:47:45,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:47:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734404354] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:47:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:47:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 20:47:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821883684] [2023-04-01 20:47:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:47:45,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:47:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:47:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:47:46,000 INFO L87 Difference]: Start difference. First operand 153413 states and 191510 transitions. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:47:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:50,416 INFO L93 Difference]: Finished difference Result 306816 states and 383038 transitions. [2023-04-01 20:47:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:47:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1491 [2023-04-01 20:47:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:51,093 INFO L225 Difference]: With dead ends: 306816 [2023-04-01 20:47:51,094 INFO L226 Difference]: Without dead ends: 153413 [2023-04-01 20:47:51,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1505 GetRequests, 1498 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:47:51,253 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 75 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:51,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 245 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 20:47:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153413 states. [2023-04-01 20:47:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153413 to 152579. [2023-04-01 20:47:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152579 states, 149654 states have (on average 1.1057372338861642) internal successors, (165478), 150177 states have internal predecessors, (165478), 865 states have call successors, (865), 714 states have call predecessors, (865), 2059 states have return successors, (23100), 1687 states have call predecessors, (23100), 864 states have call successors, (23100) [2023-04-01 20:47:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152579 states to 152579 states and 189443 transitions. [2023-04-01 20:47:54,835 INFO L78 Accepts]: Start accepts. Automaton has 152579 states and 189443 transitions. Word has length 1491 [2023-04-01 20:47:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:54,836 INFO L495 AbstractCegarLoop]: Abstraction has 152579 states and 189443 transitions. [2023-04-01 20:47:54,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:47:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 152579 states and 189443 transitions. [2023-04-01 20:47:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2023-04-01 20:47:55,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:55,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:47:55,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:47:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:55,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:55,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 457404070, now seen corresponding path program 1 times [2023-04-01 20:47:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414247880] [2023-04-01 20:47:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:47:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2023-04-01 20:47:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 1002 proven. 373 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-04-01 20:47:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414247880] [2023-04-01 20:47:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414247880] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696627572] [2023-04-01 20:47:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:59,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:59,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:47:59,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:48:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:00,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 20:48:00,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 759 proven. 626 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 20:48:01,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 1383 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 20:48:04,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696627572] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:04,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:04,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-04-01 20:48:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689264817] [2023-04-01 20:48:04,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:04,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:48:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:48:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:48:04,507 INFO L87 Difference]: Start difference. First operand 152579 states and 189443 transitions. Second operand has 11 states, 11 states have (on average 344.90909090909093) internal successors, (3794), 9 states have internal predecessors, (3794), 7 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 20:48:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:15,072 INFO L93 Difference]: Finished difference Result 298185 states and 370851 transitions. [2023-04-01 20:48:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 20:48:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 344.90909090909093) internal successors, (3794), 9 states have internal predecessors, (3794), 7 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 1814 [2023-04-01 20:48:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:15,449 INFO L225 Difference]: With dead ends: 298185 [2023-04-01 20:48:15,449 INFO L226 Difference]: Without dead ends: 144776 [2023-04-01 20:48:15,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3686 GetRequests, 3648 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:48:15,739 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 6333 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 11274 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6333 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 12611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 11274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:15,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6333 Valid, 407 Invalid, 12611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1337 Valid, 11274 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-04-01 20:48:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144776 states. [2023-04-01 20:48:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144776 to 143292. [2023-04-01 20:48:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143292 states, 140422 states have (on average 1.0660010539659028) internal successors, (149690), 141006 states have internal predecessors, (149690), 670 states have call successors, (670), 670 states have call predecessors, (670), 2199 states have return successors, (11179), 1615 states have call predecessors, (11179), 669 states have call successors, (11179) [2023-04-01 20:48:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143292 states to 143292 states and 161539 transitions. [2023-04-01 20:48:18,366 INFO L78 Accepts]: Start accepts. Automaton has 143292 states and 161539 transitions. Word has length 1814 [2023-04-01 20:48:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:18,367 INFO L495 AbstractCegarLoop]: Abstraction has 143292 states and 161539 transitions. [2023-04-01 20:48:18,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 344.90909090909093) internal successors, (3794), 9 states have internal predecessors, (3794), 7 states have call successors, (25), 8 states have call predecessors, (25), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-04-01 20:48:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 143292 states and 161539 transitions. [2023-04-01 20:48:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3871 [2023-04-01 20:48:18,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:18,842 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:48:18,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:48:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:19,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:19,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1809235542, now seen corresponding path program 1 times [2023-04-01 20:48:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478426268] [2023-04-01 20:48:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:48:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-01 20:48:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2023-04-01 20:48:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-04-01 20:48:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 939 [2023-04-01 20:48:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1639 [2023-04-01 20:48:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1746 [2023-04-01 20:48:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2004 [2023-04-01 20:48:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2218 [2023-04-01 20:48:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2498 [2023-04-01 20:48:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10486 backedges. 3110 proven. 2329 refuted. 0 times theorem prover too weak. 5047 trivial. 0 not checked. [2023-04-01 20:48:28,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478426268] [2023-04-01 20:48:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478426268] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097987065] [2023-04-01 20:48:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:28,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:28,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:28,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:28,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:48:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:29,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 5044 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:48:29,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10486 backedges. 4953 proven. 2 refuted. 0 times theorem prover too weak. 5531 trivial. 0 not checked. [2023-04-01 20:48:29,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10486 backedges. 3421 proven. 1275 refuted. 0 times theorem prover too weak. 5790 trivial. 0 not checked. [2023-04-01 20:48:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097987065] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:30,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 20:48:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773812895] [2023-04-01 20:48:30,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:48:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:48:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:48:30,608 INFO L87 Difference]: Start difference. First operand 143292 states and 161539 transitions. Second operand has 12 states, 12 states have (on average 217.25) internal successors, (2607), 10 states have internal predecessors, (2607), 8 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-04-01 20:48:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:42,552 INFO L93 Difference]: Finished difference Result 295566 states and 333832 transitions. [2023-04-01 20:48:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 20:48:42,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 217.25) internal successors, (2607), 10 states have internal predecessors, (2607), 8 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 3870 [2023-04-01 20:48:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:42,887 INFO L225 Difference]: With dead ends: 295566 [2023-04-01 20:48:42,887 INFO L226 Difference]: Without dead ends: 133437 [2023-04-01 20:48:43,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7866 GetRequests, 7815 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 20:48:43,055 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 14503 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11995 mSolverCounterSat, 3975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14510 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 15970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3975 IncrementalHoareTripleChecker+Valid, 11995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:43,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14510 Valid, 333 Invalid, 15970 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3975 Valid, 11995 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-04-01 20:48:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133437 states. [2023-04-01 20:48:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133437 to 133248. [2023-04-01 20:48:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133248 states, 131089 states have (on average 1.019452433079816) internal successors, (133639), 131484 states have internal predecessors, (133639), 630 states have call successors, (630), 630 states have call predecessors, (630), 1528 states have return successors, (5972), 1133 states have call predecessors, (5972), 629 states have call successors, (5972) [2023-04-01 20:48:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133248 states to 133248 states and 140241 transitions. [2023-04-01 20:48:45,963 INFO L78 Accepts]: Start accepts. Automaton has 133248 states and 140241 transitions. Word has length 3870 [2023-04-01 20:48:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:45,963 INFO L495 AbstractCegarLoop]: Abstraction has 133248 states and 140241 transitions. [2023-04-01 20:48:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 217.25) internal successors, (2607), 10 states have internal predecessors, (2607), 8 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-04-01 20:48:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 133248 states and 140241 transitions. [2023-04-01 20:48:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4342 [2023-04-01 20:48:46,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:46,685 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-04-01 20:48:46,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 20:48:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:46,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:46,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1459756582, now seen corresponding path program 1 times [2023-04-01 20:48:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783440207] [2023-04-01 20:48:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:48:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:48:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 20:48:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-04-01 20:48:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2023-04-01 20:48:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2023-04-01 20:48:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1169 [2023-04-01 20:48:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2023-04-01 20:48:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2110 [2023-04-01 20:48:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2217 [2023-04-01 20:48:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2475 [2023-04-01 20:48:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2689 [2023-04-01 20:48:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2969 [2023-04-01 20:48:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:48:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 17661 backedges. 3865 proven. 1806 refuted. 0 times theorem prover too weak. 11990 trivial. 0 not checked. [2023-04-01 20:48:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783440207] [2023-04-01 20:48:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783440207] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508963326] [2023-04-01 20:48:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:51,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:48:51,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 20:48:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:52,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 5649 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:48:52,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17661 backedges. 5170 proven. 2 refuted. 0 times theorem prover too weak. 12489 trivial. 0 not checked. [2023-04-01 20:48:52,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17661 backedges. 3868 proven. 1816 refuted. 0 times theorem prover too weak. 11977 trivial. 0 not checked. [2023-04-01 20:48:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508963326] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:53,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:53,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:48:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786344083] [2023-04-01 20:48:53,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:48:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:48:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:48:53,296 INFO L87 Difference]: Start difference. First operand 133248 states and 140241 transitions. Second operand has 11 states, 11 states have (on average 190.1818181818182) internal successors, (2092), 9 states have internal predecessors, (2092), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 20:49:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:00,130 INFO L93 Difference]: Finished difference Result 301108 states and 316138 transitions. [2023-04-01 20:49:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:49:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 190.1818181818182) internal successors, (2092), 9 states have internal predecessors, (2092), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 4341 [2023-04-01 20:49:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:00,608 INFO L225 Difference]: With dead ends: 301108 [2023-04-01 20:49:00,608 INFO L226 Difference]: Without dead ends: 168700 [2023-04-01 20:49:00,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8744 GetRequests, 8728 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:49:00,685 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 4613 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 9929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 152 Invalid, 9929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 20:49:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168700 states. [2023-04-01 20:49:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168700 to 161985. [2023-04-01 20:49:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161985 states, 159091 states have (on average 1.0165628476783728) internal successors, (161726), 159684 states have internal predecessors, (161726), 762 states have call successors, (762), 762 states have call predecessors, (762), 2131 states have return successors, (6376), 1538 states have call predecessors, (6376), 761 states have call successors, (6376) [2023-04-01 20:49:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161985 states to 161985 states and 168864 transitions. [2023-04-01 20:49:03,413 INFO L78 Accepts]: Start accepts. Automaton has 161985 states and 168864 transitions. Word has length 4341 [2023-04-01 20:49:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:03,415 INFO L495 AbstractCegarLoop]: Abstraction has 161985 states and 168864 transitions. [2023-04-01 20:49:03,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 190.1818181818182) internal successors, (2092), 9 states have internal predecessors, (2092), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 20:49:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 161985 states and 168864 transitions. [2023-04-01 20:49:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4343 [2023-04-01 20:49:03,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:03,877 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-04-01 20:49:03,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 20:49:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 20:49:04,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:04,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1540130186, now seen corresponding path program 1 times [2023-04-01 20:49:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798988845] [2023-04-01 20:49:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:49:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:49:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 20:49:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:12,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-04-01 20:49:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2023-04-01 20:49:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 832 [2023-04-01 20:49:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1170 [2023-04-01 20:49:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1411 [2023-04-01 20:49:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2111 [2023-04-01 20:49:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2218 [2023-04-01 20:49:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2476 [2023-04-01 20:49:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2690 [2023-04-01 20:49:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2970 [2023-04-01 20:49:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16915 backedges. 3911 proven. 3442 refuted. 0 times theorem prover too weak. 9562 trivial. 0 not checked. [2023-04-01 20:49:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798988845] [2023-04-01 20:49:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798988845] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057539698] [2023-04-01 20:49:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:14,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:14,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:14,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:49:14,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 20:49:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:15,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 5677 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:49:15,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16915 backedges. 9587 proven. 5 refuted. 0 times theorem prover too weak. 7323 trivial. 0 not checked. [2023-04-01 20:49:16,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:49:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16915 backedges. 4644 proven. 1290 refuted. 0 times theorem prover too weak. 10981 trivial. 0 not checked. [2023-04-01 20:49:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057539698] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:49:16,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:49:16,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2023-04-01 20:49:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554198650] [2023-04-01 20:49:16,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:49:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 20:49:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 20:49:16,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:49:16,709 INFO L87 Difference]: Start difference. First operand 161985 states and 168864 transitions. Second operand has 16 states, 16 states have (on average 151.6875) internal successors, (2427), 14 states have internal predecessors, (2427), 9 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22)