/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:47:45,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:47:45,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:47:45,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:47:45,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:47:45,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:47:45,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:47:45,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:47:45,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:47:45,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:47:45,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:47:45,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:47:45,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:47:45,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:47:45,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:47:45,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:47:45,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:47:45,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:47:45,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:47:45,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:47:45,474 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 20:47:45,500 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:47:45,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:47:45,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:47:45,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:47:45,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:47:45,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:47:45,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:47:45,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:47:45,503 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:47:45,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:47:45,503 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:47:45,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:47:45,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:47:45,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:47:45,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:47:45,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:47:45,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:47:45,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:47:45,506 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:47:45,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:47:45,506 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:47:45,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:47:45,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:47:45,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:47:45,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:47:45,714 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:47:45,715 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:47:45,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label53.c [2023-04-01 20:47:46,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:47:46,925 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:47:46,926 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label53.c [2023-04-01 20:47:46,947 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae6ea8b6/252e2ac89e364910b5e66635bcf3c496/FLAG5ffcf5566 [2023-04-01 20:47:46,961 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae6ea8b6/252e2ac89e364910b5e66635bcf3c496 [2023-04-01 20:47:46,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:47:46,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:47:46,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:47:46,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:47:46,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:47:46,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:47:46" (1/1) ... [2023-04-01 20:47:46,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2464263e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:46, skipping insertion in model container [2023-04-01 20:47:46,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:47:46" (1/1) ... [2023-04-01 20:47:46,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:47:47,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:47:47,781 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_label53.c[181690,181703] [2023-04-01 20:47:47,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:47:47,804 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:47:48,101 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_label53.c[181690,181703] [2023-04-01 20:47:48,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:47:48,122 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:47:48,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48 WrapperNode [2023-04-01 20:47:48,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:47:48,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:47:48,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:47:48,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:47:48,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:47:48,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:47:48,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:47:48,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:47:48,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (1/1) ... [2023-04-01 20:47:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:47:48,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:48,323 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 20:47:48,329 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 20:47:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:47:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:47:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:47:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:47:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:47:48,427 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:47:48,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:47:51,085 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:47:51,100 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:47:51,101 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:47:51,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:47:51 BoogieIcfgContainer [2023-04-01 20:47:51,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:47:51,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:47:51,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:47:51,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:47:51,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:47:46" (1/3) ... [2023-04-01 20:47:51,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bdd9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:47:51, skipping insertion in model container [2023-04-01 20:47:51,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:47:48" (2/3) ... [2023-04-01 20:47:51,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bdd9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:47:51, skipping insertion in model container [2023-04-01 20:47:51,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:47:51" (3/3) ... [2023-04-01 20:47:51,110 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label53.c [2023-04-01 20:47:51,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:47:51,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:47:51,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:47:51,186 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;@7c6c8b87, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:47:51,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:47:51,194 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 20:47:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-04-01 20:47:51,231 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:51,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:51,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:51,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -740165997, now seen corresponding path program 1 times [2023-04-01 20:47:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:51,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136624497] [2023-04-01 20:47:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:53,806 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 20:47:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136624497] [2023-04-01 20:47:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136624497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:47:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:47:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:47:53,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213084038] [2023-04-01 20:47:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:47:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:47:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:53,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:47:53,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:47:53,857 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 5 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 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 20:47:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:58,548 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2023-04-01 20:47:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:47:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 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 807 [2023-04-01 20:47:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:58,575 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:47:58,575 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:47:58,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:47:58,585 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2683 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:58,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 62 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:47:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:47:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2023-04-01 20:47:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1664 states have (on average 1.7866586538461537) internal successors, (2973), 1666 states have internal predecessors, (2973), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:47:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2023-04-01 20:47:58,713 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 807 [2023-04-01 20:47:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:58,715 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2023-04-01 20:47:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 200.0) internal successors, (800), 3 states have internal predecessors, (800), 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 20:47:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2023-04-01 20:47:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-04-01 20:47:58,748 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:58,749 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:47:58,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:47:58,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:58,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 17138417, now seen corresponding path program 1 times [2023-04-01 20:47:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:58,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697926558] [2023-04-01 20:47:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697926558] [2023-04-01 20:48:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697926558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:00,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:48:00,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:48:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638165650] [2023-04-01 20:48:00,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:48:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:48:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:48:00,433 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 5 states have internal predecessors, (806), 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 20:48:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:05,745 INFO L93 Difference]: Finished difference Result 5176 states and 9249 transitions. [2023-04-01 20:48:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:48:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 5 states have internal predecessors, (806), 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 815 [2023-04-01 20:48:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:05,757 INFO L225 Difference]: With dead ends: 5176 [2023-04-01 20:48:05,758 INFO L226 Difference]: Without dead ends: 3493 [2023-04-01 20:48:05,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:48:05,768 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2760 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 7036 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 8778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 7036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:05,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 180 Invalid, 8778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 7036 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 20:48:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-04-01 20:48:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3437. [2023-04-01 20:48:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 3367 states have (on average 1.5565785565785566) internal successors, (5241), 3376 states have internal predecessors, (5241), 18 states have call successors, (18), 18 states have call predecessors, (18), 51 states have return successors, (120), 42 states have call predecessors, (120), 17 states have call successors, (120) [2023-04-01 20:48:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5379 transitions. [2023-04-01 20:48:05,864 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5379 transitions. Word has length 815 [2023-04-01 20:48:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:05,865 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 5379 transitions. [2023-04-01 20:48:05,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 5 states have internal predecessors, (806), 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 20:48:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5379 transitions. [2023-04-01 20:48:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2023-04-01 20:48:05,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:05,877 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:48:05,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:05,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1290051771, now seen corresponding path program 1 times [2023-04-01 20:48:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:05,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727648890] [2023-04-01 20:48:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:07,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727648890] [2023-04-01 20:48:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727648890] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:07,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:48:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:48:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982738387] [2023-04-01 20:48:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:48:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:48:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:48:07,121 INFO L87 Difference]: Start difference. First operand 3437 states and 5379 transitions. Second operand has 7 states, 6 states have (on average 135.16666666666666) internal successors, (811), 4 states have internal predecessors, (811), 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 20:48:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:11,384 INFO L93 Difference]: Finished difference Result 10440 states and 16772 transitions. [2023-04-01 20:48:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 20:48:11,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 135.16666666666666) internal successors, (811), 4 states have internal predecessors, (811), 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 820 [2023-04-01 20:48:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:11,407 INFO L225 Difference]: With dead ends: 10440 [2023-04-01 20:48:11,407 INFO L226 Difference]: Without dead ends: 7009 [2023-04-01 20:48:11,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:48:11,419 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6140 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4698 mSolverCounterSat, 1543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6140 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 6241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1543 IncrementalHoareTripleChecker+Valid, 4698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:11,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6140 Valid, 106 Invalid, 6241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1543 Valid, 4698 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 20:48:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7009 states. [2023-04-01 20:48:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7009 to 6925. [2023-04-01 20:48:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6766 states have (on average 1.4945314809340822) internal successors, (10112), 6794 states have internal predecessors, (10112), 34 states have call successors, (34), 34 states have call predecessors, (34), 124 states have return successors, (480), 96 states have call predecessors, (480), 33 states have call successors, (480) [2023-04-01 20:48:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 10626 transitions. [2023-04-01 20:48:11,592 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 10626 transitions. Word has length 820 [2023-04-01 20:48:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:11,592 INFO L495 AbstractCegarLoop]: Abstraction has 6925 states and 10626 transitions. [2023-04-01 20:48:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 135.16666666666666) internal successors, (811), 4 states have internal predecessors, (811), 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 20:48:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 10626 transitions. [2023-04-01 20:48:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-04-01 20:48:11,616 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:11,616 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:11,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:48:11,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:11,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash 820424849, now seen corresponding path program 1 times [2023-04-01 20:48:11,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996215456] [2023-04-01 20:48:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 20:48:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:48:12,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:12,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996215456] [2023-04-01 20:48:12,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996215456] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:12,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058883380] [2023-04-01 20:48:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:12,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:12,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:12,381 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 20:48:12,384 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 20:48:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:12,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:48:12,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 20:48:12,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:48:12,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058883380] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:12,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:48:12,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:48:12,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73325383] [2023-04-01 20:48:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:12,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:48:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:48:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:48:12,767 INFO L87 Difference]: Start difference. First operand 6925 states and 10626 transitions. Second operand has 5 states, 5 states have (on average 161.8) internal successors, (809), 4 states have internal predecessors, (809), 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 20:48:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:15,854 INFO L93 Difference]: Finished difference Result 17353 states and 27177 transitions. [2023-04-01 20:48:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 20:48:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 161.8) internal successors, (809), 4 states have internal predecessors, (809), 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 824 [2023-04-01 20:48:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:15,889 INFO L225 Difference]: With dead ends: 17353 [2023-04-01 20:48:15,889 INFO L226 Difference]: Without dead ends: 10434 [2023-04-01 20:48:15,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:48:15,905 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2872 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4121 mSolverCounterSat, 1810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 5931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1810 IncrementalHoareTripleChecker+Valid, 4121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 105 Invalid, 5931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1810 Valid, 4121 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 20:48:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2023-04-01 20:48:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10372. [2023-04-01 20:48:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10372 states, 10138 states have (on average 1.381534819491024) internal successors, (14006), 10184 states have internal predecessors, (14006), 50 states have call successors, (50), 50 states have call predecessors, (50), 183 states have return successors, (875), 137 states have call predecessors, (875), 49 states have call successors, (875) [2023-04-01 20:48:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10372 states to 10372 states and 14931 transitions. [2023-04-01 20:48:16,140 INFO L78 Accepts]: Start accepts. Automaton has 10372 states and 14931 transitions. Word has length 824 [2023-04-01 20:48:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:16,140 INFO L495 AbstractCegarLoop]: Abstraction has 10372 states and 14931 transitions. [2023-04-01 20:48:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.8) internal successors, (809), 4 states have internal predecessors, (809), 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 20:48:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10372 states and 14931 transitions. [2023-04-01 20:48:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-04-01 20:48:16,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:16,161 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:48:16,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:48:16,367 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 20:48:16,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:16,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash 351436099, now seen corresponding path program 1 times [2023-04-01 20:48:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726577994] [2023-04-01 20:48:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726577994] [2023-04-01 20:48:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726577994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:48:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:48:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037642773] [2023-04-01 20:48:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:48:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:48:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:48:17,559 INFO L87 Difference]: Start difference. First operand 10372 states and 14931 transitions. Second operand has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 5 states have internal predecessors, (815), 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 20:48:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:22,249 INFO L93 Difference]: Finished difference Result 22744 states and 33488 transitions. [2023-04-01 20:48:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:48:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 5 states have internal predecessors, (815), 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 824 [2023-04-01 20:48:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:22,283 INFO L225 Difference]: With dead ends: 22744 [2023-04-01 20:48:22,284 INFO L226 Difference]: Without dead ends: 12378 [2023-04-01 20:48:22,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:48:22,298 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5181 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 5470 mSolverCounterSat, 2118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 7588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2118 IncrementalHoareTripleChecker+Valid, 5470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:22,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 149 Invalid, 7588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2118 Valid, 5470 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:48:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2023-04-01 20:48:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 12334. [2023-04-01 20:48:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12334 states, 11973 states have (on average 1.3567192850580472) internal successors, (16244), 12058 states have internal predecessors, (16244), 58 states have call successors, (58), 58 states have call predecessors, (58), 302 states have return successors, (1496), 217 states have call predecessors, (1496), 57 states have call successors, (1496) [2023-04-01 20:48:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 17798 transitions. [2023-04-01 20:48:22,492 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 17798 transitions. Word has length 824 [2023-04-01 20:48:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:22,492 INFO L495 AbstractCegarLoop]: Abstraction has 12334 states and 17798 transitions. [2023-04-01 20:48:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 5 states have internal predecessors, (815), 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 20:48:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 17798 transitions. [2023-04-01 20:48:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2023-04-01 20:48:22,516 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:22,517 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 20:48:22,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:22,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 789239219, now seen corresponding path program 1 times [2023-04-01 20:48:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015796972] [2023-04-01 20:48:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:48:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:48:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015796972] [2023-04-01 20:48:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015796972] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278153214] [2023-04-01 20:48:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:26,938 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 20:48:26,942 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 20:48:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:27,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:48:27,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:48:27,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:48:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278153214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:48:27,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:48:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 20:48:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212339776] [2023-04-01 20:48:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:48:27,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:48:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:48:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:48:27,896 INFO L87 Difference]: Start difference. First operand 12334 states and 17798 transitions. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:48:30,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:30,209 INFO L93 Difference]: Finished difference Result 34787 states and 51332 transitions. [2023-04-01 20:48:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:48:30,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 841 [2023-04-01 20:48:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:30,265 INFO L225 Difference]: With dead ends: 34787 [2023-04-01 20:48:30,265 INFO L226 Difference]: Without dead ends: 22459 [2023-04-01 20:48:30,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:48:30,293 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 88 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:30,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1593 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 20:48:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22459 states. [2023-04-01 20:48:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22459 to 22451. [2023-04-01 20:48:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22451 states, 21951 states have (on average 1.2445902236800146) internal successors, (27320), 22056 states have internal predecessors, (27320), 106 states have call successors, (106), 106 states have call predecessors, (106), 393 states have return successors, (2316), 288 states have call predecessors, (2316), 105 states have call successors, (2316) [2023-04-01 20:48:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22451 states to 22451 states and 29742 transitions. [2023-04-01 20:48:30,673 INFO L78 Accepts]: Start accepts. Automaton has 22451 states and 29742 transitions. Word has length 841 [2023-04-01 20:48:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:30,674 INFO L495 AbstractCegarLoop]: Abstraction has 22451 states and 29742 transitions. [2023-04-01 20:48:30,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:48:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 22451 states and 29742 transitions. [2023-04-01 20:48:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2023-04-01 20:48:30,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:30,716 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:30,724 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 20:48:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 20:48:30,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:30,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1853388225, now seen corresponding path program 1 times [2023-04-01 20:48:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445804918] [2023-04-01 20:48:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:48:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:48:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:48:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:48:32,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:48:32,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445804918] [2023-04-01 20:48:32,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445804918] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:48:32,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128005366] [2023-04-01 20:48:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:32,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:48:32,418 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 20:48:32,419 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 20:48:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:48:32,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:48:32,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:48:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:32,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:48:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:48:32,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128005366] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:48:32,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:48:32,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:48:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812319943] [2023-04-01 20:48:32,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:48:32,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:48:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:48:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:48:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:48:32,997 INFO L87 Difference]: Start difference. First operand 22451 states and 29742 transitions. Second operand has 13 states, 13 states have (on average 79.46153846153847) internal successors, (1033), 11 states have internal predecessors, (1033), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:48:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:48:55,335 INFO L93 Difference]: Finished difference Result 138808 states and 205006 transitions. [2023-04-01 20:48:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:48:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 79.46153846153847) internal successors, (1033), 11 states have internal predecessors, (1033), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 899 [2023-04-01 20:48:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:48:55,844 INFO L225 Difference]: With dead ends: 138808 [2023-04-01 20:48:55,845 INFO L226 Difference]: Without dead ends: 116363 [2023-04-01 20:48:55,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1862 GetRequests, 1822 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 20:48:55,887 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 17942 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 31923 mSolverCounterSat, 8908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17955 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 40831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8908 IncrementalHoareTripleChecker+Valid, 31923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:48:55,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17955 Valid, 408 Invalid, 40831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8908 Valid, 31923 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2023-04-01 20:48:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116363 states. [2023-04-01 20:48:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116363 to 115414. [2023-04-01 20:48:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115414 states, 113002 states have (on average 1.2058901612360844) internal successors, (136268), 113497 states have internal predecessors, (136268), 675 states have call successors, (675), 538 states have call predecessors, (675), 1736 states have return successors, (24656), 1378 states have call predecessors, (24656), 674 states have call successors, (24656) [2023-04-01 20:48:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115414 states to 115414 states and 161599 transitions. [2023-04-01 20:48:58,412 INFO L78 Accepts]: Start accepts. Automaton has 115414 states and 161599 transitions. Word has length 899 [2023-04-01 20:48:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:48:58,412 INFO L495 AbstractCegarLoop]: Abstraction has 115414 states and 161599 transitions. [2023-04-01 20:48:58,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.46153846153847) internal successors, (1033), 11 states have internal predecessors, (1033), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:48:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 115414 states and 161599 transitions. [2023-04-01 20:48:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2023-04-01 20:48:58,988 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:48:58,990 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 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] [2023-04-01 20:48:58,999 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 20:48:59,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:48:59,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:48:59,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:48:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -545042357, now seen corresponding path program 1 times [2023-04-01 20:48:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:48:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079271765] [2023-04-01 20:48:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:48:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:48:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:49:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-01 20:49:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-01 20:49:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 211 proven. 14 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 20:49:00,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079271765] [2023-04-01 20:49:00,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079271765] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582851895] [2023-04-01 20:49:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:00,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:00,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:00,173 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 20:49:00,175 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 20:49:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:00,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:49:00,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-04-01 20:49:00,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:49:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 215 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-01 20:49:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582851895] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:49:00,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:49:00,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:49:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427205515] [2023-04-01 20:49:00,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:49:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:49:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:49:00,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:49:00,582 INFO L87 Difference]: Start difference. First operand 115414 states and 161599 transitions. Second operand has 11 states, 11 states have (on average 84.81818181818181) internal successors, (933), 9 states have internal predecessors, (933), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:49:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:11,252 INFO L93 Difference]: Finished difference Result 336891 states and 494884 transitions. [2023-04-01 20:49:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:49:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 84.81818181818181) internal successors, (933), 9 states have internal predecessors, (933), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1019 [2023-04-01 20:49:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:11,969 INFO L225 Difference]: With dead ends: 336891 [2023-04-01 20:49:11,969 INFO L226 Difference]: Without dead ends: 207598 [2023-04-01 20:49:12,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2107 GetRequests, 2069 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:49:12,142 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 12037 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 8322 mSolverCounterSat, 4999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12037 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 13321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4999 IncrementalHoareTripleChecker+Valid, 8322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:12,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12037 Valid, 320 Invalid, 13321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4999 Valid, 8322 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 20:49:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207598 states. [2023-04-01 20:49:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207598 to 195320. [2023-04-01 20:49:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195320 states, 192175 states have (on average 1.045016261220242) internal successors, (200826), 192707 states have internal predecessors, (200826), 1043 states have call successors, (1043), 922 states have call predecessors, (1043), 2101 states have return successors, (23055), 1690 states have call predecessors, (23055), 1042 states have call successors, (23055) [2023-04-01 20:49:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195320 states to 195320 states and 224924 transitions. [2023-04-01 20:49:15,778 INFO L78 Accepts]: Start accepts. Automaton has 195320 states and 224924 transitions. Word has length 1019 [2023-04-01 20:49:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:15,778 INFO L495 AbstractCegarLoop]: Abstraction has 195320 states and 224924 transitions. [2023-04-01 20:49:15,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.81818181818181) internal successors, (933), 9 states have internal predecessors, (933), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:49:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 195320 states and 224924 transitions. [2023-04-01 20:49:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2023-04-01 20:49:15,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:15,898 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 20:49:15,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 20:49:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:16,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:16,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -883069015, now seen corresponding path program 1 times [2023-04-01 20:49:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:16,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694817545] [2023-04-01 20:49:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:49:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:49:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 257 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 20:49:18,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694817545] [2023-04-01 20:49:18,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694817545] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351973028] [2023-04-01 20:49:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:18,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:18,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:18,423 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 20:49:18,425 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 20:49:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:18,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:49:18,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-04-01 20:49:19,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:49:19,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351973028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:49:19,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:49:19,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:49:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503908665] [2023-04-01 20:49:19,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:49:19,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:49:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:49:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:19,452 INFO L87 Difference]: Start difference. First operand 195320 states and 224924 transitions. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:49:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:23,384 INFO L93 Difference]: Finished difference Result 420987 states and 486761 transitions. [2023-04-01 20:49:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:49:23,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1073 [2023-04-01 20:49:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:24,128 INFO L225 Difference]: With dead ends: 420987 [2023-04-01 20:49:24,128 INFO L226 Difference]: Without dead ends: 226507 [2023-04-01 20:49:24,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:24,257 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:24,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1013 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:49:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226507 states. [2023-04-01 20:49:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226507 to 225671. [2023-04-01 20:49:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225671 states, 222123 states have (on average 1.0414545094384642) internal successors, (231331), 222699 states have internal predecessors, (231331), 1213 states have call successors, (1213), 1066 states have call predecessors, (1213), 2334 states have return successors, (25178), 1905 states have call predecessors, (25178), 1212 states have call successors, (25178) [2023-04-01 20:49:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225671 states to 225671 states and 257722 transitions. [2023-04-01 20:49:28,281 INFO L78 Accepts]: Start accepts. Automaton has 225671 states and 257722 transitions. Word has length 1073 [2023-04-01 20:49:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:28,281 INFO L495 AbstractCegarLoop]: Abstraction has 225671 states and 257722 transitions. [2023-04-01 20:49:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 20:49:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 225671 states and 257722 transitions. [2023-04-01 20:49:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2023-04-01 20:49:28,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:28,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:49:28,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:49:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:28,751 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:28,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash -893625781, now seen corresponding path program 1 times [2023-04-01 20:49:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:28,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454251482] [2023-04-01 20:49:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:49:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454251482] [2023-04-01 20:49:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454251482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:49:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:49:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:49:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622856388] [2023-04-01 20:49:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:49:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:49:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:49:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:49:31,661 INFO L87 Difference]: Start difference. First operand 225671 states and 257722 transitions. Second operand has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 4 states have internal predecessors, (1084), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:49:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:36,627 INFO L93 Difference]: Finished difference Result 429419 states and 489417 transitions. [2023-04-01 20:49:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:49:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 4 states have internal predecessors, (1084), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1095 [2023-04-01 20:49:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:37,301 INFO L225 Difference]: With dead ends: 429419 [2023-04-01 20:49:37,301 INFO L226 Difference]: Without dead ends: 204588 [2023-04-01 20:49:37,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:49:37,522 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2514 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4312 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 4312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:37,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 139 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 4312 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 20:49:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204588 states. [2023-04-01 20:49:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204588 to 204565. [2023-04-01 20:49:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204565 states, 201304 states have (on average 1.0371279259229822) internal successors, (208778), 201856 states have internal predecessors, (208778), 1094 states have call successors, (1094), 966 states have call predecessors, (1094), 2166 states have return successors, (20548), 1742 states have call predecessors, (20548), 1093 states have call successors, (20548) [2023-04-01 20:49:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204565 states to 204565 states and 230420 transitions. [2023-04-01 20:49:40,825 INFO L78 Accepts]: Start accepts. Automaton has 204565 states and 230420 transitions. Word has length 1095 [2023-04-01 20:49:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:40,826 INFO L495 AbstractCegarLoop]: Abstraction has 204565 states and 230420 transitions. [2023-04-01 20:49:40,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 4 states have internal predecessors, (1084), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:49:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 204565 states and 230420 transitions. [2023-04-01 20:49:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2023-04-01 20:49:41,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:49:41,121 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:49:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 20:49:41,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:49:41,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:49:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1058420979, now seen corresponding path program 1 times [2023-04-01 20:49:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:49:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103489275] [2023-04-01 20:49:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:49:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:49:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:49:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:49:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:49:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 302 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 20:49:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:49:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103489275] [2023-04-01 20:49:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103489275] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:49:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777624521] [2023-04-01 20:49:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:49:43,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:43,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:49:43,022 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 20:49:43,024 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 20:49:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:49:43,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:49:43,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:49:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 20:49:44,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:49:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777624521] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:49:44,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:49:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 20:49:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547242726] [2023-04-01 20:49:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:49:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:49:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:49:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:49:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:44,038 INFO L87 Difference]: Start difference. First operand 204565 states and 230420 transitions. Second operand has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 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 20:49:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:49:47,478 INFO L93 Difference]: Finished difference Result 406605 states and 458212 transitions. [2023-04-01 20:49:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:49:47,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 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 1121 [2023-04-01 20:49:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:49:47,480 INFO L225 Difference]: With dead ends: 406605 [2023-04-01 20:49:47,480 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:49:47,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:49:47,738 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 86 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:49:47,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 985 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 20:49:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:49:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:49:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:49:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:49:47,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1121 [2023-04-01 20:49:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:49:47,740 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:49:47,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 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 20:49:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:49:47,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:49:47,742 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:49:47,748 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 20:49:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:49:47,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 20:50:52,689 WARN L223 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 993 DAG size of output: 1231 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)