/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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:01:29,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:01:29,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:01:29,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:01:29,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:01:29,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:01:29,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:01:29,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:01:29,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:01:29,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:01:29,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:01:29,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:01:29,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:01:29,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:01:29,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:01:29,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:01:29,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:01:29,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:01:29,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:01:29,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:01:29,518 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 21:01:29,543 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:01:29,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:01:29,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:01:29,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:01:29,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:01:29,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:01:29,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:01:29,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:01:29,545 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:01:29,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:01:29,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:01:29,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:01:29,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:29,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:01:29,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:01:29,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:01:29,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:01:29,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:01:29,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:01:29,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:01:29,552 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:01:29,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:01:29,552 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:01:29,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:01:29,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:01:29,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:01:29,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:01:29,807 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:01:29,807 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:01:29,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label48.c [2023-04-01 21:01:30,972 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:01:31,639 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:01:31,640 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label48.c [2023-04-01 21:01:31,702 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6059e159/ad710606a0164b2aa45ec7277d43851f/FLAGea52adfaa [2023-04-01 21:01:31,719 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6059e159/ad710606a0164b2aa45ec7277d43851f [2023-04-01 21:01:31,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:01:31,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:01:31,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:31,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:01:31,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:01:31,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:31" (1/1) ... [2023-04-01 21:01:31,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff20c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:31, skipping insertion in model container [2023-04-01 21:01:31,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:31" (1/1) ... [2023-04-01 21:01:31,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:01:31,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:01:33,372 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_label48.c[375366,375379] [2023-04-01 21:01:33,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:33,412 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:01:34,178 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_label48.c[375366,375379] [2023-04-01 21:01:34,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:34,234 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:01:34,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34 WrapperNode [2023-04-01 21:01:34,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:34,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:01:34,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:01:34,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:01:34,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:01:34,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:01:34,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:01:34,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:01:34,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (1/1) ... [2023-04-01 21:01:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:34,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:01:34,751 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 21:01:34,773 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 21:01:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:01:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:01:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:01:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:01:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:01:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:01:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:01:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:01:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 21:01:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 21:01:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 21:01:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:01:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:01:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:01:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:01:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:01:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:01:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:01:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:01:34,890 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:01:34,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:01:41,512 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:01:41,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:01:41,530 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:01:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:41 BoogieIcfgContainer [2023-04-01 21:01:41,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:01:41,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:01:41,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:01:41,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:01:41,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:01:31" (1/3) ... [2023-04-01 21:01:41,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4582b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:41, skipping insertion in model container [2023-04-01 21:01:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:34" (2/3) ... [2023-04-01 21:01:41,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4582b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:41, skipping insertion in model container [2023-04-01 21:01:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:41" (3/3) ... [2023-04-01 21:01:41,542 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48.c [2023-04-01 21:01:41,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:01:41,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:01:41,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:01:41,649 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;@7de41dd3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:01:41,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:01:41,662 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 21:01:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2023-04-01 21:01:41,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:41,764 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] [2023-04-01 21:01:41,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:41,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:41,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1873069418, now seen corresponding path program 1 times [2023-04-01 21:01:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:41,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827731065] [2023-04-01 21:01:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:51,138 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 21:01:51,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:51,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827731065] [2023-04-01 21:01:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827731065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:51,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:01:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286551345] [2023-04-01 21:01:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:01:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:01:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:01:51,193 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 412.5) internal successors, (1650), 3 states have internal predecessors, (1650), 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 21:02:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:05,616 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2023-04-01 21:02:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:02:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 412.5) internal successors, (1650), 3 states have internal predecessors, (1650), 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 1661 [2023-04-01 21:02:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:05,672 INFO L225 Difference]: With dead ends: 8125 [2023-04-01 21:02:05,672 INFO L226 Difference]: Without dead ends: 5835 [2023-04-01 21:02:05,684 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 21:02:05,687 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 8825 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 11197 mSolverCounterSat, 4583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8825 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 15780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4583 IncrementalHoareTripleChecker+Valid, 11197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:05,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8825 Valid, 631 Invalid, 15780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4583 Valid, 11197 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-04-01 21:02:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2023-04-01 21:02:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2023-04-01 21:02:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5731 states have (on average 1.6169952887803176) internal successors, (9267), 5734 states have internal predecessors, (9267), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (91), 40 states have call predecessors, (91), 25 states have call successors, (91) [2023-04-01 21:02:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2023-04-01 21:02:05,908 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1661 [2023-04-01 21:02:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:05,912 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2023-04-01 21:02:05,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 412.5) internal successors, (1650), 3 states have internal predecessors, (1650), 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 21:02:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2023-04-01 21:02:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2023-04-01 21:02:05,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:05,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:05,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:02:05,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:05,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1019428771, now seen corresponding path program 1 times [2023-04-01 21:02:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562245388] [2023-04-01 21:02:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 21:02:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:02:09,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562245388] [2023-04-01 21:02:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562245388] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916371408] [2023-04-01 21:02:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:09,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:09,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:09,397 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 21:02:09,429 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 21:02:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:10,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:02:10,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 21:02:10,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:02:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916371408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:02:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:02:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752175385] [2023-04-01 21:02:10,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:10,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:02:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:02:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:02:10,203 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand has 5 states, 5 states have (on average 331.8) internal successors, (1659), 4 states have internal predecessors, (1659), 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 21:02:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:18,862 INFO L93 Difference]: Finished difference Result 17259 states and 28406 transitions. [2023-04-01 21:02:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:02:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 331.8) internal successors, (1659), 4 states have internal predecessors, (1659), 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 1685 [2023-04-01 21:02:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:18,920 INFO L225 Difference]: With dead ends: 17259 [2023-04-01 21:02:18,920 INFO L226 Difference]: Without dead ends: 11464 [2023-04-01 21:02:18,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1697 GetRequests, 1685 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:02:18,939 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 5972 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 10925 mSolverCounterSat, 3663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5972 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 14588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 10925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:18,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5972 Valid, 1988 Invalid, 14588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3663 Valid, 10925 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 21:02:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2023-04-01 21:02:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11230. [2023-04-01 21:02:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11230 states, 11041 states have (on average 1.4966035685173444) internal successors, (16524), 11058 states have internal predecessors, (16524), 50 states have call successors, (50), 50 states have call predecessors, (50), 138 states have return successors, (480), 121 states have call predecessors, (480), 49 states have call successors, (480) [2023-04-01 21:02:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 17054 transitions. [2023-04-01 21:02:19,309 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 17054 transitions. Word has length 1685 [2023-04-01 21:02:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 11230 states and 17054 transitions. [2023-04-01 21:02:19,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.8) internal successors, (1659), 4 states have internal predecessors, (1659), 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 21:02:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 17054 transitions. [2023-04-01 21:02:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2023-04-01 21:02:19,432 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:19,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 21:02:19,443 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 21:02:19,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:19,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:19,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 6762043, now seen corresponding path program 1 times [2023-04-01 21:02:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:19,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709338347] [2023-04-01 21:02:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:19,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709338347] [2023-04-01 21:02:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709338347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:22,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:02:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 21:02:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583410275] [2023-04-01 21:02:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 21:02:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 21:02:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:02:22,136 INFO L87 Difference]: Start difference. First operand 11230 states and 17054 transitions. Second operand has 8 states, 7 states have (on average 241.14285714285714) internal successors, (1688), 5 states have internal predecessors, (1688), 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 21:02:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:36,919 INFO L93 Difference]: Finished difference Result 44734 states and 72689 transitions. [2023-04-01 21:02:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 21:02:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 241.14285714285714) internal successors, (1688), 5 states have internal predecessors, (1688), 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 1701 [2023-04-01 21:02:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:37,140 INFO L225 Difference]: With dead ends: 44734 [2023-04-01 21:02:37,140 INFO L226 Difference]: Without dead ends: 33510 [2023-04-01 21:02:37,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 21:02:37,172 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 18576 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 14670 mSolverCounterSat, 7327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18576 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 21997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7327 IncrementalHoareTripleChecker+Valid, 14670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:37,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18576 Valid, 1165 Invalid, 21997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7327 Valid, 14670 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-04-01 21:02:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33510 states. [2023-04-01 21:02:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33510 to 33249. [2023-04-01 21:02:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33249 states, 32427 states have (on average 1.4166589570419712) internal successors, (45938), 32512 states have internal predecessors, (45938), 146 states have call successors, (146), 146 states have call predecessors, (146), 675 states have return successors, (4661), 590 states have call predecessors, (4661), 145 states have call successors, (4661) [2023-04-01 21:02:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33249 states to 33249 states and 50745 transitions. [2023-04-01 21:02:37,973 INFO L78 Accepts]: Start accepts. Automaton has 33249 states and 50745 transitions. Word has length 1701 [2023-04-01 21:02:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:37,974 INFO L495 AbstractCegarLoop]: Abstraction has 33249 states and 50745 transitions. [2023-04-01 21:02:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 241.14285714285714) internal successors, (1688), 5 states have internal predecessors, (1688), 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 21:02:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 33249 states and 50745 transitions. [2023-04-01 21:02:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1750 [2023-04-01 21:02:38,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:38,094 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2023-04-01 21:02:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 21:02:38,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:38,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash -857568331, now seen corresponding path program 1 times [2023-04-01 21:02:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671104369] [2023-04-01 21:02:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-01 21:02:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 80 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:02:40,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671104369] [2023-04-01 21:02:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671104369] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297856220] [2023-04-01 21:02:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:40,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:40,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:40,485 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 21:02:40,487 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 21:02:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:41,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:02:41,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 21:02:41,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:02:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297856220] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:02:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:02:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316920844] [2023-04-01 21:02:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:41,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:02:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:02:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:02:41,145 INFO L87 Difference]: Start difference. First operand 33249 states and 50745 transitions. Second operand has 5 states, 5 states have (on average 337.6) internal successors, (1688), 4 states have internal predecessors, (1688), 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 21:02:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:48,764 INFO L93 Difference]: Finished difference Result 78545 states and 126128 transitions. [2023-04-01 21:02:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 21:02:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 337.6) internal successors, (1688), 4 states have internal predecessors, (1688), 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 1749 [2023-04-01 21:02:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:48,916 INFO L225 Difference]: With dead ends: 78545 [2023-04-01 21:02:48,916 INFO L226 Difference]: Without dead ends: 45302 [2023-04-01 21:02:48,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1761 GetRequests, 1749 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:02:48,992 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 6485 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 10575 mSolverCounterSat, 2445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6485 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 13020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2445 IncrementalHoareTripleChecker+Valid, 10575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:48,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6485 Valid, 1649 Invalid, 13020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2445 Valid, 10575 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 21:02:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45302 states. [2023-04-01 21:02:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45302 to 44929. [2023-04-01 21:02:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44929 states, 43552 states have (on average 1.273925422483468) internal successors, (55482), 43718 states have internal predecessors, (55482), 194 states have call successors, (194), 194 states have call predecessors, (194), 1182 states have return successors, (8383), 1016 states have call predecessors, (8383), 193 states have call successors, (8383) [2023-04-01 21:02:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44929 states to 44929 states and 64059 transitions. [2023-04-01 21:02:50,052 INFO L78 Accepts]: Start accepts. Automaton has 44929 states and 64059 transitions. Word has length 1749 [2023-04-01 21:02:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:50,053 INFO L495 AbstractCegarLoop]: Abstraction has 44929 states and 64059 transitions. [2023-04-01 21:02:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 337.6) internal successors, (1688), 4 states have internal predecessors, (1688), 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 21:02:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 44929 states and 64059 transitions. [2023-04-01 21:02:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2023-04-01 21:02:50,469 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:50,470 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2023-04-01 21:02:50,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 21:02:50,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 21:02:50,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:50,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash 900359552, now seen corresponding path program 1 times [2023-04-01 21:02:50,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470147165] [2023-04-01 21:02:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:02:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 21:02:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-04-01 21:02:52,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:52,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470147165] [2023-04-01 21:02:52,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470147165] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729113629] [2023-04-01 21:02:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:52,349 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 21:02:52,377 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 21:02:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:52,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 21:02:53,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-01 21:02:53,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:02:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729113629] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:02:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-04-01 21:02:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935601897] [2023-04-01 21:02:53,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:02:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:02:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:02:53,065 INFO L87 Difference]: Start difference. First operand 44929 states and 64059 transitions. Second operand has 3 states, 3 states have (on average 563.3333333333334) internal successors, (1690), 3 states have internal predecessors, (1690), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:02:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:59,060 INFO L93 Difference]: Finished difference Result 132384 states and 197083 transitions. [2023-04-01 21:02:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:02:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 563.3333333333334) internal successors, (1690), 3 states have internal predecessors, (1690), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1760 [2023-04-01 21:02:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:59,353 INFO L225 Difference]: With dead ends: 132384 [2023-04-01 21:02:59,353 INFO L226 Difference]: Without dead ends: 87461 [2023-04-01 21:02:59,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1773 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:02:59,403 INFO L413 NwaCegarLoop]: 3968 mSDtfsCounter, 1853 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 5839 mSolverCounterSat, 1352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 7191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1352 IncrementalHoareTripleChecker+Valid, 5839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:59,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 4405 Invalid, 7191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1352 Valid, 5839 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 21:02:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87461 states. [2023-04-01 21:03:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87461 to 87446. [2023-04-01 21:03:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87446 states, 85329 states have (on average 1.1807826178673135) internal successors, (100755), 85567 states have internal predecessors, (100755), 386 states have call successors, (386), 386 states have call predecessors, (386), 1730 states have return successors, (16204), 1492 states have call predecessors, (16204), 385 states have call successors, (16204) [2023-04-01 21:03:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87446 states to 87446 states and 117345 transitions. [2023-04-01 21:03:01,875 INFO L78 Accepts]: Start accepts. Automaton has 87446 states and 117345 transitions. Word has length 1760 [2023-04-01 21:03:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:01,876 INFO L495 AbstractCegarLoop]: Abstraction has 87446 states and 117345 transitions. [2023-04-01 21:03:01,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 563.3333333333334) internal successors, (1690), 3 states have internal predecessors, (1690), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:03:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 87446 states and 117345 transitions. [2023-04-01 21:03:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2023-04-01 21:03:02,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:02,277 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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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] [2023-04-01 21:03:02,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 21:03:02,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:02,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:02,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -837967679, now seen corresponding path program 1 times [2023-04-01 21:03:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828072867] [2023-04-01 21:03:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-01 21:03:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-01 21:03:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 91 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 21:03:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828072867] [2023-04-01 21:03:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828072867] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923900124] [2023-04-01 21:03:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:04,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:04,413 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 21:03:04,436 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 21:03:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:04,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:03:05,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 21:03:05,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:03:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 102 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-01 21:03:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923900124] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:03:05,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:03:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:03:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569220115] [2023-04-01 21:03:05,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:03:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:03:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:03:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:03:05,253 INFO L87 Difference]: Start difference. First operand 87446 states and 117345 transitions. Second operand has 12 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 10 states have internal predecessors, (1760), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:03:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:35,286 INFO L93 Difference]: Finished difference Result 315276 states and 504317 transitions. [2023-04-01 21:03:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 21:03:35,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 10 states have internal predecessors, (1760), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1761 [2023-04-01 21:03:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:37,008 INFO L225 Difference]: With dead ends: 315276 [2023-04-01 21:03:37,008 INFO L226 Difference]: Without dead ends: 227836 [2023-04-01 21:03:37,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3608 GetRequests, 3558 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=2083, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 21:03:37,123 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 32357 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 24765 mSolverCounterSat, 20194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32357 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 44959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20194 IncrementalHoareTripleChecker+Valid, 24765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:37,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32357 Valid, 2143 Invalid, 44959 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20194 Valid, 24765 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2023-04-01 21:03:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227836 states. [2023-04-01 21:03:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227836 to 227085. [2023-04-01 21:03:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227085 states, 222014 states have (on average 1.1826776689758303) internal successors, (262571), 222642 states have internal predecessors, (262571), 1010 states have call successors, (1010), 1010 states have call predecessors, (1010), 4060 states have return successors, (70912), 3432 states have call predecessors, (70912), 1009 states have call successors, (70912) [2023-04-01 21:03:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227085 states to 227085 states and 334493 transitions. [2023-04-01 21:03:43,414 INFO L78 Accepts]: Start accepts. Automaton has 227085 states and 334493 transitions. Word has length 1761 [2023-04-01 21:03:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:43,414 INFO L495 AbstractCegarLoop]: Abstraction has 227085 states and 334493 transitions. [2023-04-01 21:03:43,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 10 states have internal predecessors, (1760), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:03:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 227085 states and 334493 transitions. [2023-04-01 21:03:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1888 [2023-04-01 21:03:44,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:44,092 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-04-01 21:03:44,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 21:03:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:44,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:44,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 62489261, now seen corresponding path program 1 times [2023-04-01 21:03:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436815877] [2023-04-01 21:03:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:03:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 21:03:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-01 21:03:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-01 21:03:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 229 proven. 74 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 21:03:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436815877] [2023-04-01 21:03:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436815877] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992301091] [2023-04-01 21:03:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:46,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:03:46,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 21:03:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:46,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:03:46,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-01 21:03:47,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:03:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 230 proven. 77 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-01 21:03:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992301091] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:03:47,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:03:47,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:03:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174323527] [2023-04-01 21:03:47,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:03:47,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:03:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:03:47,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:03:47,262 INFO L87 Difference]: Start difference. First operand 227085 states and 334493 transitions. Second operand has 12 states, 12 states have (on average 157.5) internal successors, (1890), 10 states have internal predecessors, (1890), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:04:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:15,360 INFO L93 Difference]: Finished difference Result 539072 states and 876289 transitions. [2023-04-01 21:04:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 21:04:15,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 157.5) internal successors, (1890), 10 states have internal predecessors, (1890), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1887 [2023-04-01 21:04:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:16,998 INFO L225 Difference]: With dead ends: 539072 [2023-04-01 21:04:16,998 INFO L226 Difference]: Without dead ends: 311993 [2023-04-01 21:04:17,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3911 GetRequests, 3838 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=873, Invalid=4529, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 21:04:17,414 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 24739 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 31780 mSolverCounterSat, 8249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24747 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 40029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8249 IncrementalHoareTripleChecker+Valid, 31780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:17,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24747 Valid, 2676 Invalid, 40029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8249 Valid, 31780 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2023-04-01 21:04:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311993 states. [2023-04-01 21:04:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311993 to 299692. [2023-04-01 21:04:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299692 states, 292734 states have (on average 1.0795705316089008) internal successors, (316027), 293683 states have internal predecessors, (316027), 1330 states have call successors, (1330), 1330 states have call predecessors, (1330), 5627 states have return successors, (53627), 4678 states have call predecessors, (53627), 1329 states have call successors, (53627) [2023-04-01 21:04:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299692 states to 299692 states and 370984 transitions. [2023-04-01 21:04:24,981 INFO L78 Accepts]: Start accepts. Automaton has 299692 states and 370984 transitions. Word has length 1887 [2023-04-01 21:04:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:24,981 INFO L495 AbstractCegarLoop]: Abstraction has 299692 states and 370984 transitions. [2023-04-01 21:04:24,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.5) internal successors, (1890), 10 states have internal predecessors, (1890), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:04:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 299692 states and 370984 transitions. [2023-04-01 21:04:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2023-04-01 21:04:25,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:25,673 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 21:04:25,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 21:04:25,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:25,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:25,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 600136466, now seen corresponding path program 1 times [2023-04-01 21:04:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209373762] [2023-04-01 21:04:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:25,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 21:04:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 227 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:04:28,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209373762] [2023-04-01 21:04:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209373762] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113549970] [2023-04-01 21:04:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:28,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:28,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:04:28,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 21:04:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:29,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:04:29,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:29,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:04:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113549970] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:04:30,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:04:30,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 21:04:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493253244] [2023-04-01 21:04:30,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:04:30,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 21:04:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 21:04:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:04:30,293 INFO L87 Difference]: Start difference. First operand 299692 states and 370984 transitions. Second operand has 11 states, 11 states have (on average 192.9090909090909) internal successors, (2122), 9 states have internal predecessors, (2122), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)