/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/Problem05_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:53:15,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:53:15,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:53:15,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:53:15,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:53:15,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:53:15,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:53:15,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:53:15,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:53:15,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:53:15,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:53:15,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:53:15,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:53:15,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:53:15,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:53:15,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:53:15,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:53:15,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:53:15,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:53:15,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:53:15,264 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 20:53:15,292 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:53:15,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:53:15,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:53:15,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:53:15,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:53:15,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:53:15,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:53:15,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:53:15,294 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:53:15,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:53:15,295 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:53:15,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:53:15,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:53:15,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:53:15,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:53:15,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:53:15,298 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:53:15,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:53:15,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:53:15,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:53:15,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:53:15,519 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:53:15,520 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:53:15,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label15.c [2023-04-01 20:53:16,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:53:17,154 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:53:17,154 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label15.c [2023-04-01 20:53:17,205 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92aa9b84f/ac3060846b94454ca5670b11c10ac781/FLAG3e367f8b9 [2023-04-01 20:53:17,222 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92aa9b84f/ac3060846b94454ca5670b11c10ac781 [2023-04-01 20:53:17,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:53:17,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:53:17,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:53:17,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:53:17,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:53:17,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:53:17" (1/1) ... [2023-04-01 20:53:17,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471206f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:17, skipping insertion in model container [2023-04-01 20:53:17,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:53:17" (1/1) ... [2023-04-01 20:53:17,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:53:17,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:53:19,096 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/Problem05_label15.c[376590,376603] [2023-04-01 20:53:19,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:53:19,127 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:53:19,864 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/Problem05_label15.c[376590,376603] [2023-04-01 20:53:19,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:53:19,916 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:53:19,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19 WrapperNode [2023-04-01 20:53:19,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:53:19,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:53:19,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:53:19,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:53:19,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:19,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:53:20,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:53:20,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:53:20,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:53:20,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (1/1) ... [2023-04-01 20:53:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:53:20,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:53:20,454 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 20:53:20,475 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 20:53:20,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:53:20,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 20:53:20,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 20:53:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:53:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:53:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:53:20,664 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:53:20,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:53:27,000 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:53:27,020 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:53:27,021 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:53:27,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:53:27 BoogieIcfgContainer [2023-04-01 20:53:27,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:53:27,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:53:27,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:53:27,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:53:27,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:53:17" (1/3) ... [2023-04-01 20:53:27,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:53:27, skipping insertion in model container [2023-04-01 20:53:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:53:19" (2/3) ... [2023-04-01 20:53:27,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:53:27, skipping insertion in model container [2023-04-01 20:53:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:53:27" (3/3) ... [2023-04-01 20:53:27,032 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label15.c [2023-04-01 20:53:27,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:53:27,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:53:27,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:53:27,148 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;@75ccff57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:53:27,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:53:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 20:53:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2023-04-01 20:53:27,254 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:53:27,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:27,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:53:27,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:53:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash -13635039, now seen corresponding path program 1 times [2023-04-01 20:53:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:53:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459096627] [2023-04-01 20:53:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:53:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:53:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:53:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:53:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:53:35,666 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 20:53:35,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:53:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459096627] [2023-04-01 20:53:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459096627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:53:35,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:53:35,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:53:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108550837] [2023-04-01 20:53:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:53:35,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:53:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:53:35,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:53:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:53:35,746 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 414.75) internal successors, (1659), 3 states have internal predecessors, (1659), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:53:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:53:49,534 INFO L93 Difference]: Finished difference Result 8118 states and 15418 transitions. [2023-04-01 20:53:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:53:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 414.75) internal successors, (1659), 3 states have internal predecessors, (1659), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1670 [2023-04-01 20:53:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:53:49,592 INFO L225 Difference]: With dead ends: 8118 [2023-04-01 20:53:49,592 INFO L226 Difference]: Without dead ends: 5828 [2023-04-01 20:53:49,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:53:49,607 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 7051 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 10767 mSolverCounterSat, 5370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7051 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 16137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5370 IncrementalHoareTripleChecker+Valid, 10767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:53:49,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7051 Valid, 477 Invalid, 16137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5370 Valid, 10767 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-04-01 20:53:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2023-04-01 20:53:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5783. [2023-04-01 20:53:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5713 states have (on average 1.7376159635918083) internal successors, (9927), 5716 states have internal predecessors, (9927), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (98), 40 states have call predecessors, (98), 25 states have call successors, (98) [2023-04-01 20:53:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 10051 transitions. [2023-04-01 20:53:49,852 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 10051 transitions. Word has length 1670 [2023-04-01 20:53:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:53:49,859 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 10051 transitions. [2023-04-01 20:53:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 414.75) internal successors, (1659), 3 states have internal predecessors, (1659), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:53:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 10051 transitions. [2023-04-01 20:53:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2023-04-01 20:53:49,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:53:49,944 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:49,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:53:49,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:53:49,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:53:49,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1541731474, now seen corresponding path program 1 times [2023-04-01 20:53:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:53:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297919229] [2023-04-01 20:53:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:53:49,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:53:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:53:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:53:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:53:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:53:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:53:52,157 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 20:53:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:53:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297919229] [2023-04-01 20:53:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297919229] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:53:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:53:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:53:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205198850] [2023-04-01 20:53:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:53:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:53:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:53:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:53:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:53:52,168 INFO L87 Difference]: Start difference. First operand 5783 states and 10051 transitions. Second operand has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 4 states have internal predecessors, (1672), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:54:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:54:02,575 INFO L93 Difference]: Finished difference Result 16971 states and 29948 transitions. [2023-04-01 20:54:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:54:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 4 states have internal predecessors, (1672), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1685 [2023-04-01 20:54:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:54:02,625 INFO L225 Difference]: With dead ends: 16971 [2023-04-01 20:54:02,625 INFO L226 Difference]: Without dead ends: 11194 [2023-04-01 20:54:02,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:54:02,641 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 9925 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 12780 mSolverCounterSat, 2683 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9925 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 15463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2683 IncrementalHoareTripleChecker+Valid, 12780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:54:02,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9925 Valid, 800 Invalid, 15463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2683 Valid, 12780 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-04-01 20:54:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11194 states. [2023-04-01 20:54:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11194 to 11126. [2023-04-01 20:54:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11126 states, 10955 states have (on average 1.6466453674121406) internal successors, (18039), 10965 states have internal predecessors, (18039), 50 states have call successors, (50), 50 states have call predecessors, (50), 120 states have return successors, (385), 110 states have call predecessors, (385), 49 states have call successors, (385) [2023-04-01 20:54:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 18474 transitions. [2023-04-01 20:54:02,914 INFO L78 Accepts]: Start accepts. Automaton has 11126 states and 18474 transitions. Word has length 1685 [2023-04-01 20:54:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:54:02,915 INFO L495 AbstractCegarLoop]: Abstraction has 11126 states and 18474 transitions. [2023-04-01 20:54:02,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 4 states have internal predecessors, (1672), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:54:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11126 states and 18474 transitions. [2023-04-01 20:54:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1764 [2023-04-01 20:54:02,970 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:54:02,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:54:02,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:54:02,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:54:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1100929082, now seen corresponding path program 1 times [2023-04-01 20:54:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:54:02,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62722995] [2023-04-01 20:54:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:02,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:54:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:54:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:54:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:54:04,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:54:04,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62722995] [2023-04-01 20:54:04,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62722995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:54:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:54:04,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:54:04,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039910655] [2023-04-01 20:54:04,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:54:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:54:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:54:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:54:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:54:04,984 INFO L87 Difference]: Start difference. First operand 11126 states and 18474 transitions. Second operand has 8 states, 7 states have (on average 250.0) internal successors, (1750), 5 states have internal predecessors, (1750), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:54:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:54:18,657 INFO L93 Difference]: Finished difference Result 33341 states and 55533 transitions. [2023-04-01 20:54:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:54:18,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 250.0) internal successors, (1750), 5 states have internal predecessors, (1750), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1763 [2023-04-01 20:54:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:54:18,734 INFO L225 Difference]: With dead ends: 33341 [2023-04-01 20:54:18,735 INFO L226 Difference]: Without dead ends: 22221 [2023-04-01 20:54:18,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:54:18,759 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 11914 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 17656 mSolverCounterSat, 3641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11914 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 21297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3641 IncrementalHoareTripleChecker+Valid, 17656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:54:18,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11914 Valid, 1173 Invalid, 21297 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3641 Valid, 17656 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-04-01 20:54:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22221 states. [2023-04-01 20:54:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22221 to 22148. [2023-04-01 20:54:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22148 states, 21665 states have (on average 1.33464112624048) internal successors, (28915), 21704 states have internal predecessors, (28915), 98 states have call successors, (98), 98 states have call predecessors, (98), 384 states have return successors, (1680), 345 states have call predecessors, (1680), 97 states have call successors, (1680) [2023-04-01 20:54:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22148 states to 22148 states and 30693 transitions. [2023-04-01 20:54:19,220 INFO L78 Accepts]: Start accepts. Automaton has 22148 states and 30693 transitions. Word has length 1763 [2023-04-01 20:54:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:54:19,221 INFO L495 AbstractCegarLoop]: Abstraction has 22148 states and 30693 transitions. [2023-04-01 20:54:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 250.0) internal successors, (1750), 5 states have internal predecessors, (1750), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:54:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 22148 states and 30693 transitions. [2023-04-01 20:54:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1838 [2023-04-01 20:54:19,291 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:54:19,292 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:19,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:54:19,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:54:19,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:54:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1934455102, now seen corresponding path program 1 times [2023-04-01 20:54:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:54:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039197474] [2023-04-01 20:54:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:54:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:54:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:54:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-01 20:54:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 161 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:54:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:54:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039197474] [2023-04-01 20:54:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039197474] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:54:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263429100] [2023-04-01 20:54:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:20,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:54:20,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:54:20,951 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 20:54:20,978 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 20:54:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:21,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:54:21,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:54:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 20:54:21,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:54:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263429100] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:54:21,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:54:21,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 20:54:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290833511] [2023-04-01 20:54:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:54:21,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:54:21,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:54:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:54:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:54:21,821 INFO L87 Difference]: Start difference. First operand 22148 states and 30693 transitions. Second operand has 5 states, 5 states have (on average 346.6) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:54:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:54:29,513 INFO L93 Difference]: Finished difference Result 67063 states and 97829 transitions. [2023-04-01 20:54:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 20:54:29,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 346.6) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1837 [2023-04-01 20:54:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:54:29,676 INFO L225 Difference]: With dead ends: 67063 [2023-04-01 20:54:29,676 INFO L226 Difference]: Without dead ends: 44921 [2023-04-01 20:54:29,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1849 GetRequests, 1838 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:54:29,741 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 6658 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 10848 mSolverCounterSat, 2848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 13696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2848 IncrementalHoareTripleChecker+Valid, 10848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:54:29,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6658 Valid, 1350 Invalid, 13696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2848 Valid, 10848 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 20:54:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44921 states. [2023-04-01 20:54:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44921 to 44526. [2023-04-01 20:54:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44526 states, 43278 states have (on average 1.2305328342344841) internal successors, (53255), 43417 states have internal predecessors, (53255), 194 states have call successors, (194), 194 states have call predecessors, (194), 1053 states have return successors, (6512), 914 states have call predecessors, (6512), 193 states have call successors, (6512) [2023-04-01 20:54:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44526 states to 44526 states and 59961 transitions. [2023-04-01 20:54:30,828 INFO L78 Accepts]: Start accepts. Automaton has 44526 states and 59961 transitions. Word has length 1837 [2023-04-01 20:54:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:54:30,829 INFO L495 AbstractCegarLoop]: Abstraction has 44526 states and 59961 transitions. [2023-04-01 20:54:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.6) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:54:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 44526 states and 59961 transitions. [2023-04-01 20:54:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1860 [2023-04-01 20:54:30,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:54:30,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:30,970 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 20:54:31,167 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 20:54:31,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:54:31,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:54:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -812555071, now seen corresponding path program 1 times [2023-04-01 20:54:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:54:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549839733] [2023-04-01 20:54:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:54:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:54:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:54:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-01 20:54:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-01 20:54:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 203 proven. 73 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 20:54:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:54:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549839733] [2023-04-01 20:54:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549839733] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:54:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729252445] [2023-04-01 20:54:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:32,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:54:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:54:32,905 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 20:54:32,927 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 20:54:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:33,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:54:33,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:54:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 20:54:33,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:54:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 204 proven. 74 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 20:54:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729252445] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:54:33,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:54:33,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:54:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699744078] [2023-04-01 20:54:33,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:54:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:54:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:54:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:54:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:54:33,990 INFO L87 Difference]: Start difference. First operand 44526 states and 59961 transitions. Second operand has 11 states, 11 states have (on average 179.0909090909091) internal successors, (1970), 9 states have internal predecessors, (1970), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:54:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:54:51,230 INFO L93 Difference]: Finished difference Result 126033 states and 182379 transitions. [2023-04-01 20:54:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 20:54:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 179.0909090909091) internal successors, (1970), 9 states have internal predecessors, (1970), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1859 [2023-04-01 20:54:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:54:51,534 INFO L225 Difference]: With dead ends: 126033 [2023-04-01 20:54:51,534 INFO L226 Difference]: Without dead ends: 81513 [2023-04-01 20:54:51,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3750 GetRequests, 3729 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 20:54:51,625 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 13880 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 28192 mSolverCounterSat, 5615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13887 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 33807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5615 IncrementalHoareTripleChecker+Valid, 28192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:54:51,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13887 Valid, 1366 Invalid, 33807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5615 Valid, 28192 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-04-01 20:54:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81513 states. [2023-04-01 20:54:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81513 to 81090. [2023-04-01 20:54:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81090 states, 78826 states have (on average 1.1788496181462969) internal successors, (92924), 79090 states have internal predecessors, (92924), 355 states have call successors, (355), 354 states have call predecessors, (355), 1908 states have return successors, (14167), 1645 states have call predecessors, (14167), 354 states have call successors, (14167) [2023-04-01 20:54:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81090 states to 81090 states and 107446 transitions. [2023-04-01 20:54:53,593 INFO L78 Accepts]: Start accepts. Automaton has 81090 states and 107446 transitions. Word has length 1859 [2023-04-01 20:54:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:54:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 81090 states and 107446 transitions. [2023-04-01 20:54:53,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.0909090909091) internal successors, (1970), 9 states have internal predecessors, (1970), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:54:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 81090 states and 107446 transitions. [2023-04-01 20:54:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1859 [2023-04-01 20:54:53,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:54:53,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:53,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 20:54:53,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:54:53,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:54:53,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:54:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1715470821, now seen corresponding path program 1 times [2023-04-01 20:54:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:54:53,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271744822] [2023-04-01 20:54:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:54:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:54:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:54:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:54:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:54:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:54:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:54:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271744822] [2023-04-01 20:54:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271744822] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:54:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:54:56,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:54:56,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999661382] [2023-04-01 20:54:56,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:54:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:54:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:54:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:54:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:54:56,178 INFO L87 Difference]: Start difference. First operand 81090 states and 107446 transitions. Second operand has 7 states, 6 states have (on average 307.5) internal successors, (1845), 4 states have internal predecessors, (1845), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:55:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:55:07,294 INFO L93 Difference]: Finished difference Result 234532 states and 326331 transitions. [2023-04-01 20:55:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:55:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 307.5) internal successors, (1845), 4 states have internal predecessors, (1845), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1858 [2023-04-01 20:55:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:55:07,792 INFO L225 Difference]: With dead ends: 234532 [2023-04-01 20:55:07,792 INFO L226 Difference]: Without dead ends: 153452 [2023-04-01 20:55:07,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:55:07,917 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 11133 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 12563 mSolverCounterSat, 3380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11133 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 15943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3380 IncrementalHoareTripleChecker+Valid, 12563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:55:07,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11133 Valid, 1008 Invalid, 15943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3380 Valid, 12563 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-01 20:55:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153452 states. [2023-04-01 20:55:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153452 to 149732. [2023-04-01 20:55:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149732 states, 145816 states have (on average 1.1300543150271576) internal successors, (164780), 146309 states have internal predecessors, (164780), 659 states have call successors, (659), 658 states have call predecessors, (659), 3256 states have return successors, (29694), 2764 states have call predecessors, (29694), 658 states have call successors, (29694) [2023-04-01 20:55:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149732 states to 149732 states and 195133 transitions. [2023-04-01 20:55:12,071 INFO L78 Accepts]: Start accepts. Automaton has 149732 states and 195133 transitions. Word has length 1858 [2023-04-01 20:55:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:55:12,071 INFO L495 AbstractCegarLoop]: Abstraction has 149732 states and 195133 transitions. [2023-04-01 20:55:12,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 307.5) internal successors, (1845), 4 states have internal predecessors, (1845), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:55:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 149732 states and 195133 transitions. [2023-04-01 20:55:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2012 [2023-04-01 20:55:12,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:55:12,693 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:12,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 20:55:12,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:55:12,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:55:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -617222027, now seen corresponding path program 1 times [2023-04-01 20:55:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:55:12,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798901847] [2023-04-01 20:55:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:55:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:55:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:55:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:55:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:55:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 481 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-01 20:55:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:55:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798901847] [2023-04-01 20:55:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798901847] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:55:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904312943] [2023-04-01 20:55:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:15,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:55:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:55:15,937 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 20:55:15,941 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 20:55:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:16,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:55:16,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:55:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 20:55:16,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:55:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 20:55:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904312943] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:55:17,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:55:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 20:55:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578921072] [2023-04-01 20:55:17,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:55:17,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:55:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:55:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:55:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:55:17,393 INFO L87 Difference]: Start difference. First operand 149732 states and 195133 transitions. Second operand has 12 states, 12 states have (on average 194.41666666666666) internal successors, (2333), 10 states have internal predecessors, (2333), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 20:55:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:55:45,474 INFO L93 Difference]: Finished difference Result 404791 states and 537980 transitions. [2023-04-01 20:55:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-04-01 20:55:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 194.41666666666666) internal successors, (2333), 10 states have internal predecessors, (2333), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 2011 [2023-04-01 20:55:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:55:46,665 INFO L225 Difference]: With dead ends: 404791 [2023-04-01 20:55:46,665 INFO L226 Difference]: Without dead ends: 249153 [2023-04-01 20:55:47,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4128 GetRequests, 4068 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=614, Invalid=2926, Unknown=0, NotChecked=0, Total=3540 [2023-04-01 20:55:47,003 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 20924 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 40035 mSolverCounterSat, 10029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20932 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 50064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10029 IncrementalHoareTripleChecker+Valid, 40035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:55:47,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20932 Valid, 2311 Invalid, 50064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10029 Valid, 40035 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2023-04-01 20:55:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249153 states. [2023-04-01 20:55:50,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249153 to 241680. [2023-04-01 20:55:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241680 states, 235593 states have (on average 1.069382367048257) internal successors, (251939), 236407 states have internal predecessors, (251939), 1067 states have call successors, (1067), 1066 states have call predecessors, (1067), 5019 states have return successors, (36879), 4206 states have call predecessors, (36879), 1066 states have call successors, (36879) [2023-04-01 20:55:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241680 states to 241680 states and 289885 transitions. [2023-04-01 20:55:51,848 INFO L78 Accepts]: Start accepts. Automaton has 241680 states and 289885 transitions. Word has length 2011 [2023-04-01 20:55:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:55:51,849 INFO L495 AbstractCegarLoop]: Abstraction has 241680 states and 289885 transitions. [2023-04-01 20:55:51,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 194.41666666666666) internal successors, (2333), 10 states have internal predecessors, (2333), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 20:55:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 241680 states and 289885 transitions. [2023-04-01 20:55:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2060 [2023-04-01 20:55:52,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:55:52,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:52,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 20:55:52,628 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 20:55:52,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:55:52,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:55:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash 649767003, now seen corresponding path program 1 times [2023-04-01 20:55:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:55:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346359722] [2023-04-01 20:55:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:55:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:56:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:56:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:56:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:00,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:56:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-01 20:56:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 671 proven. 120 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-01 20:56:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:56:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346359722] [2023-04-01 20:56:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346359722] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:56:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526477177] [2023-04-01 20:56:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:01,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:56:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:56:01,322 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 20:56:01,323 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 20:56:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:01,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-01 20:56:01,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:56:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 447 proven. 228 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-04-01 20:56:03,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:56:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 671 proven. 4 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-04-01 20:56:07,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526477177] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:56:07,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:56:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 4] total 17 [2023-04-01 20:56:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083851940] [2023-04-01 20:56:07,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:56:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 20:56:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:56:07,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 20:56:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-04-01 20:56:07,680 INFO L87 Difference]: Start difference. First operand 241680 states and 289885 transitions. Second operand has 17 states, 17 states have (on average 230.47058823529412) internal successors, (3918), 15 states have internal predecessors, (3918), 7 states have call successors, (27), 8 states have call predecessors, (27), 9 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10)