/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:57:45,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:57:45,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:57:45,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:57:45,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:57:45,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:57:45,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:57:45,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:57:45,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:57:45,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:57:45,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:57:45,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:57:45,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:57:45,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:57:45,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:57:45,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:57:45,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:57:45,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:57:45,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:57:45,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:57:45,767 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 23:57:45,793 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:57:45,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:57:45,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:57:45,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:57:45,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:57:45,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:57:45,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:57:45,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:57:45,796 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:57:45,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:57:45,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:57:45,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:45,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:57:45,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:57:45,799 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:57:45,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:57:45,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:57:45,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:57:45,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:57:45,952 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:57:45,953 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:57:45,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label38.c [2023-04-01 23:57:46,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:57:47,246 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:57:47,246 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label38.c [2023-04-01 23:57:47,281 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0e21646/bcbeffa8f8984979bd2c99ea46bfbe40/FLAGd04238683 [2023-04-01 23:57:47,417 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0e21646/bcbeffa8f8984979bd2c99ea46bfbe40 [2023-04-01 23:57:47,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:57:47,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:57:47,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:47,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:57:47,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:57:47,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:47" (1/1) ... [2023-04-01 23:57:47,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181853c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:47, skipping insertion in model container [2023-04-01 23:57:47,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:57:47" (1/1) ... [2023-04-01 23:57:47,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:57:47,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:57:47,775 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label38.c[7658,7671] [2023-04-01 23:57:48,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:48,512 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:57:48,538 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label38.c[7658,7671] [2023-04-01 23:57:49,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:57:49,055 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:57:49,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49 WrapperNode [2023-04-01 23:57:49,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:57:49,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:57:49,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:57:49,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:57:49,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:57:49,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:57:49,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:57:49,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:57:49,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (1/1) ... [2023-04-01 23:57:49,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:57:49,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:57:49,419 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 23:57:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:57:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:57:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:57:49,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:57:49,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:57:49,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:57:49,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:57:49,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:57:49,434 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 23:57:49,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:57:49,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:57:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:57:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:57:49,563 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:57:49,564 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:57:54,943 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:57:54,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:57:54,961 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:57:54,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:54 BoogieIcfgContainer [2023-04-01 23:57:54,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:57:54,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:57:54,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:57:54,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:57:54,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:57:47" (1/3) ... [2023-04-01 23:57:54,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c861d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:54, skipping insertion in model container [2023-04-01 23:57:54,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:57:49" (2/3) ... [2023-04-01 23:57:54,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c861d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:57:54, skipping insertion in model container [2023-04-01 23:57:54,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:57:54" (3/3) ... [2023-04-01 23:57:54,969 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label38.c [2023-04-01 23:57:54,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:57:54,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:57:55,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:57:55,034 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;@55c26dfd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:57:55,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:57:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 23:57:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-01 23:57:55,047 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:57:55,048 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] [2023-04-01 23:57:55,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:57:55,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:57:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2110596808, now seen corresponding path program 1 times [2023-04-01 23:57:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:57:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387812497] [2023-04-01 23:57:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:57:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:57:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:57:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:57:55,613 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 23:57:55,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:57:55,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387812497] [2023-04-01 23:57:55,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387812497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:57:55,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:57:55,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:57:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976394196] [2023-04-01 23:57:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:57:55,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:57:55,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:57:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:57:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:57:55,640 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:58:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:07,700 INFO L93 Difference]: Finished difference Result 6483 states and 12306 transitions. [2023-04-01 23:58:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:58:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-01 23:58:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:07,730 INFO L225 Difference]: With dead ends: 6483 [2023-04-01 23:58:07,730 INFO L226 Difference]: Without dead ends: 4638 [2023-04-01 23:58:07,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:07,740 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 7897 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 3639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7897 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 12786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3639 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:07,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7897 Valid, 495 Invalid, 12786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3639 Valid, 9147 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-04-01 23:58:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2023-04-01 23:58:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4629. [2023-04-01 23:58:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6764384161015096) internal successors, (7663), 4574 states have internal predecessors, (7663), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-01 23:58:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7760 transitions. [2023-04-01 23:58:07,932 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7760 transitions. Word has length 65 [2023-04-01 23:58:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:07,935 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7760 transitions. [2023-04-01 23:58:07,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:58:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7760 transitions. [2023-04-01 23:58:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-01 23:58:07,945 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:07,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:58:07,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:07,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 673354544, now seen corresponding path program 1 times [2023-04-01 23:58:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893766579] [2023-04-01 23:58:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893766579] [2023-04-01 23:58:08,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893766579] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530585010] [2023-04-01 23:58:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:08,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:08,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:08,428 INFO L87 Difference]: Start difference. First operand 4629 states and 7760 transitions. Second operand has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:18,623 INFO L93 Difference]: Finished difference Result 13837 states and 23541 transitions. [2023-04-01 23:58:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 154 [2023-04-01 23:58:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:18,658 INFO L225 Difference]: With dead ends: 13837 [2023-04-01 23:58:18,659 INFO L226 Difference]: Without dead ends: 9214 [2023-04-01 23:58:18,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:58:18,672 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 8094 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 9996 mSolverCounterSat, 2127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 12123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 9996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:18,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8094 Valid, 897 Invalid, 12123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 9996 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-01 23:58:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2023-04-01 23:58:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 9059. [2023-04-01 23:58:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 8892 states have (on average 1.4507422402159245) internal successors, (12900), 8909 states have internal predecessors, (12900), 38 states have call successors, (38), 38 states have call predecessors, (38), 128 states have return successors, (405), 111 states have call predecessors, (405), 37 states have call successors, (405) [2023-04-01 23:58:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13343 transitions. [2023-04-01 23:58:18,857 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 13343 transitions. Word has length 154 [2023-04-01 23:58:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:18,858 INFO L495 AbstractCegarLoop]: Abstraction has 9059 states and 13343 transitions. [2023-04-01 23:58:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 13343 transitions. [2023-04-01 23:58:18,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-04-01 23:58:18,865 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:18,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:18,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:58:18,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:18,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1652196163, now seen corresponding path program 1 times [2023-04-01 23:58:18,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583374095] [2023-04-01 23:58:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:18,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:58:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583374095] [2023-04-01 23:58:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583374095] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:19,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:58:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:58:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566189666] [2023-04-01 23:58:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:19,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:58:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:58:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:58:19,333 INFO L87 Difference]: Start difference. First operand 9059 states and 13343 transitions. Second operand has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:28,924 INFO L93 Difference]: Finished difference Result 27892 states and 42475 transitions. [2023-04-01 23:58:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:58:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 199 [2023-04-01 23:58:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:28,979 INFO L225 Difference]: With dead ends: 27892 [2023-04-01 23:58:28,979 INFO L226 Difference]: Without dead ends: 18839 [2023-04-01 23:58:28,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:58:29,000 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 11592 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 9609 mSolverCounterSat, 2149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11592 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 11758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2149 IncrementalHoareTripleChecker+Valid, 9609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11592 Valid, 997 Invalid, 11758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2149 Valid, 9609 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-04-01 23:58:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18839 states. [2023-04-01 23:58:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18839 to 18417. [2023-04-01 23:58:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18417 states, 17885 states have (on average 1.2922560805143974) internal successors, (23112), 17964 states have internal predecessors, (23112), 74 states have call successors, (74), 74 states have call predecessors, (74), 457 states have return successors, (1799), 378 states have call predecessors, (1799), 73 states have call successors, (1799) [2023-04-01 23:58:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18417 states to 18417 states and 24985 transitions. [2023-04-01 23:58:29,419 INFO L78 Accepts]: Start accepts. Automaton has 18417 states and 24985 transitions. Word has length 199 [2023-04-01 23:58:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:29,420 INFO L495 AbstractCegarLoop]: Abstraction has 18417 states and 24985 transitions. [2023-04-01 23:58:29,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 32.166666666666664) internal successors, (193), 4 states have internal predecessors, (193), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:58:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 18417 states and 24985 transitions. [2023-04-01 23:58:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-01 23:58:29,423 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:29,423 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, 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] [2023-04-01 23:58:29,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:58:29,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:29,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1929355084, now seen corresponding path program 1 times [2023-04-01 23:58:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:29,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466559311] [2023-04-01 23:58:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-01 23:58:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 116 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:58:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466559311] [2023-04-01 23:58:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466559311] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554825622] [2023-04-01 23:58:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:29,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:29,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:29,718 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 23:58:29,719 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 23:58:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:29,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:58:29,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-01 23:58:29,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:58:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554825622] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:29,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:58:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 23:58:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392057396] [2023-04-01 23:58:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:29,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:58:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:58:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:58:29,978 INFO L87 Difference]: Start difference. First operand 18417 states and 24985 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:58:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:38,190 INFO L93 Difference]: Finished difference Result 55851 states and 78306 transitions. [2023-04-01 23:58:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:58:38,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 218 [2023-04-01 23:58:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:38,299 INFO L225 Difference]: With dead ends: 55851 [2023-04-01 23:58:38,299 INFO L226 Difference]: Without dead ends: 37440 [2023-04-01 23:58:38,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:58:38,342 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 8212 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8101 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8212 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 9109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 8101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8212 Valid, 941 Invalid, 9109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 8101 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 23:58:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37440 states. [2023-04-01 23:58:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37440 to 32598. [2023-04-01 23:58:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32598 states, 31421 states have (on average 1.2786353075968302) internal successors, (40176), 31627 states have internal predecessors, (40176), 128 states have call successors, (128), 128 states have call predecessors, (128), 1048 states have return successors, (4196), 842 states have call predecessors, (4196), 127 states have call successors, (4196) [2023-04-01 23:58:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32598 states to 32598 states and 44500 transitions. [2023-04-01 23:58:38,999 INFO L78 Accepts]: Start accepts. Automaton has 32598 states and 44500 transitions. Word has length 218 [2023-04-01 23:58:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:38,999 INFO L495 AbstractCegarLoop]: Abstraction has 32598 states and 44500 transitions. [2023-04-01 23:58:38,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:58:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32598 states and 44500 transitions. [2023-04-01 23:58:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-04-01 23:58:39,002 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:39,002 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, 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] [2023-04-01 23:58:39,012 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 23:58:39,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:39,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:39,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -524721614, now seen corresponding path program 1 times [2023-04-01 23:58:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194223535] [2023-04-01 23:58:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:39,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-01 23:58:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 116 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:58:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194223535] [2023-04-01 23:58:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194223535] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817633741] [2023-04-01 23:58:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:39,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:39,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:39,477 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 23:58:39,479 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 23:58:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:39,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:58:39,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-01 23:58:39,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:58:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817633741] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:58:39,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:58:39,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:58:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257091760] [2023-04-01 23:58:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:58:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:58:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:58:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:58:39,727 INFO L87 Difference]: Start difference. First operand 32598 states and 44500 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:58:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:58:48,432 INFO L93 Difference]: Finished difference Result 98970 states and 145136 transitions. [2023-04-01 23:58:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:58:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 234 [2023-04-01 23:58:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:58:48,617 INFO L225 Difference]: With dead ends: 98970 [2023-04-01 23:58:48,617 INFO L226 Difference]: Without dead ends: 66378 [2023-04-01 23:58:48,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 234 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 23:58:48,666 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 4826 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 8381 mSolverCounterSat, 3379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 11760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3379 IncrementalHoareTripleChecker+Valid, 8381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:58:48,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 1202 Invalid, 11760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3379 Valid, 8381 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 23:58:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66378 states. [2023-04-01 23:58:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66378 to 63488. [2023-04-01 23:58:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63488 states, 60948 states have (on average 1.2307376780206076) internal successors, (75011), 61436 states have internal predecessors, (75011), 248 states have call successors, (248), 248 states have call predecessors, (248), 2291 states have return successors, (12861), 1803 states have call predecessors, (12861), 247 states have call successors, (12861) [2023-04-01 23:58:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63488 states to 63488 states and 88120 transitions. [2023-04-01 23:58:50,004 INFO L78 Accepts]: Start accepts. Automaton has 63488 states and 88120 transitions. Word has length 234 [2023-04-01 23:58:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:58:50,004 INFO L495 AbstractCegarLoop]: Abstraction has 63488 states and 88120 transitions. [2023-04-01 23:58:50,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:58:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 63488 states and 88120 transitions. [2023-04-01 23:58:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-04-01 23:58:50,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:58:50,012 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:50,019 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 23:58:50,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:50,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:58:50,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:58:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1422496243, now seen corresponding path program 1 times [2023-04-01 23:58:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:58:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743118498] [2023-04-01 23:58:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:58:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:58:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:58:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 23:58:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-04-01 23:58:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 273 proven. 97 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-04-01 23:58:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:58:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743118498] [2023-04-01 23:58:50,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743118498] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:58:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001381039] [2023-04-01 23:58:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:58:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:58:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:58:50,759 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 23:58:50,763 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 23:58:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:58:50,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:58:50,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:58:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-01 23:58:51,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:58:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 274 proven. 98 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-04-01 23:58:51,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001381039] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:58:51,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:58:51,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:58:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299287506] [2023-04-01 23:58:51,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:58:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:58:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:58:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:58:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:58:51,318 INFO L87 Difference]: Start difference. First operand 63488 states and 88120 transitions. Second operand has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:59:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:59:28,739 INFO L93 Difference]: Finished difference Result 258271 states and 435019 transitions. [2023-04-01 23:59:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-04-01 23:59:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 520 [2023-04-01 23:59:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:59:30,163 INFO L225 Difference]: With dead ends: 258271 [2023-04-01 23:59:30,164 INFO L226 Difference]: Without dead ends: 184548 [2023-04-01 23:59:30,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1100 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=814, Invalid=4298, Unknown=0, NotChecked=0, Total=5112 [2023-04-01 23:59:30,469 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 15432 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 52110 mSolverCounterSat, 5274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15436 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 57384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5274 IncrementalHoareTripleChecker+Valid, 52110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:59:30,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15436 Valid, 2682 Invalid, 57384 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5274 Valid, 52110 Invalid, 0 Unknown, 0 Unchecked, 33.8s Time] [2023-04-01 23:59:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184548 states. [2023-04-01 23:59:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184548 to 178598. [2023-04-01 23:59:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178598 states, 172207 states have (on average 1.1473575406342367) internal successors, (197583), 173461 states have internal predecessors, (197583), 820 states have call successors, (820), 710 states have call predecessors, (820), 5570 states have return successors, (57879), 4426 states have call predecessors, (57879), 819 states have call successors, (57879) [2023-04-01 23:59:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178598 states to 178598 states and 256282 transitions. [2023-04-01 23:59:35,163 INFO L78 Accepts]: Start accepts. Automaton has 178598 states and 256282 transitions. Word has length 520 [2023-04-01 23:59:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:59:35,163 INFO L495 AbstractCegarLoop]: Abstraction has 178598 states and 256282 transitions. [2023-04-01 23:59:35,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.333333333333336) internal successors, (652), 10 states have internal predecessors, (652), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:59:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 178598 states and 256282 transitions. [2023-04-01 23:59:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2023-04-01 23:59:35,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:59:35,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:35,273 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 23:59:35,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:59:35,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:59:35,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:59:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -622425768, now seen corresponding path program 1 times [2023-04-01 23:59:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:59:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501762781] [2023-04-01 23:59:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:59:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:36,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:59:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:59:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-01 23:59:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:59:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:37,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-04-01 23:59:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 891 [2023-04-01 23:59:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 448 proven. 287 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-04-01 23:59:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:59:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501762781] [2023-04-01 23:59:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501762781] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:59:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349198344] [2023-04-01 23:59:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:59:37,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:59:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:59:37,707 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 23:59:37,709 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 23:59:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:59:37,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:59:37,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:59:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 905 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-04-01 23:59:38,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:59:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 449 proven. 289 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-04-01 23:59:39,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349198344] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:59:39,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:59:39,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:59:39,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397425764] [2023-04-01 23:59:39,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:59:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:59:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:59:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:59:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:59:39,716 INFO L87 Difference]: Start difference. First operand 178598 states and 256282 transitions. Second operand has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-02 00:00:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:05,619 INFO L93 Difference]: Finished difference Result 432426 states and 635075 transitions. [2023-04-02 00:00:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-02 00:00:05,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 1075 [2023-04-02 00:00:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:06,623 INFO L225 Difference]: With dead ends: 432426 [2023-04-02 00:00:06,623 INFO L226 Difference]: Without dead ends: 252453 [2023-04-02 00:00:06,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2250 GetRequests, 2196 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 00:00:06,937 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 14971 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 29284 mSolverCounterSat, 8280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14971 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 37564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8280 IncrementalHoareTripleChecker+Valid, 29284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:06,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14971 Valid, 1929 Invalid, 37564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8280 Valid, 29284 Invalid, 0 Unknown, 0 Unchecked, 21.5s Time] [2023-04-02 00:00:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252453 states. [2023-04-02 00:00:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252453 to 244407. [2023-04-02 00:00:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244407 states, 236276 states have (on average 1.1031971084663699) internal successors, (260659), 237862 states have internal predecessors, (260659), 1114 states have call successors, (1114), 980 states have call predecessors, (1114), 7016 states have return successors, (64280), 5564 states have call predecessors, (64280), 1113 states have call successors, (64280) [2023-04-02 00:00:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244407 states to 244407 states and 326053 transitions. [2023-04-02 00:00:12,649 INFO L78 Accepts]: Start accepts. Automaton has 244407 states and 326053 transitions. Word has length 1075 [2023-04-02 00:00:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:12,650 INFO L495 AbstractCegarLoop]: Abstraction has 244407 states and 326053 transitions. [2023-04-02 00:00:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 9 states have internal predecessors, (1889), 7 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-02 00:00:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 244407 states and 326053 transitions. [2023-04-02 00:00:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2023-04-02 00:00:12,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:12,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:12,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 00:00:12,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:12,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:12,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash 648631075, now seen corresponding path program 1 times [2023-04-02 00:00:12,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:12,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688227327] [2023-04-02 00:00:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:12,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 00:00:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2023-04-02 00:00:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2023-04-02 00:00:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 312 proven. 10 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-04-02 00:00:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688227327] [2023-04-02 00:00:14,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688227327] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252773844] [2023-04-02 00:00:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:14,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:14,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:14,400 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) [2023-04-02 00:00:14,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 00:00:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:14,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:00:14,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:00:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-02 00:00:14,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:00:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-02 00:00:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252773844] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:00:15,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:00:15,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-02 00:00:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564425261] [2023-04-02 00:00:15,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:00:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:00:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:00:15,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:00:15,009 INFO L87 Difference]: Start difference. First operand 244407 states and 326053 transitions. Second operand has 12 states, 12 states have (on average 75.41666666666667) internal successors, (905), 10 states have internal predecessors, (905), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 00:00:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:30,422 INFO L93 Difference]: Finished difference Result 489751 states and 656889 transitions. [2023-04-02 00:00:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:00:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 75.41666666666667) internal successors, (905), 10 states have internal predecessors, (905), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 962 [2023-04-02 00:00:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:31,460 INFO L225 Difference]: With dead ends: 489751 [2023-04-02 00:00:31,460 INFO L226 Difference]: Without dead ends: 245354 [2023-04-02 00:00:31,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1956 GetRequests, 1938 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-04-02 00:00:31,817 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 11434 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 20058 mSolverCounterSat, 2074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11434 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 22132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2074 IncrementalHoareTripleChecker+Valid, 20058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:31,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11434 Valid, 1635 Invalid, 22132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2074 Valid, 20058 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-04-02 00:00:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245354 states. [2023-04-02 00:00:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245354 to 244831. [2023-04-02 00:00:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244831 states, 236550 states have (on average 1.0946438385119426) internal successors, (258938), 238184 states have internal predecessors, (258938), 1114 states have call successors, (1114), 980 states have call predecessors, (1114), 7166 states have return successors, (58913), 5666 states have call predecessors, (58913), 1113 states have call successors, (58913) [2023-04-02 00:00:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244831 states to 244831 states and 318965 transitions. [2023-04-02 00:00:37,113 INFO L78 Accepts]: Start accepts. Automaton has 244831 states and 318965 transitions. Word has length 962 [2023-04-02 00:00:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:37,114 INFO L495 AbstractCegarLoop]: Abstraction has 244831 states and 318965 transitions. [2023-04-02 00:00:37,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 75.41666666666667) internal successors, (905), 10 states have internal predecessors, (905), 5 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 00:00:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 244831 states and 318965 transitions. [2023-04-02 00:00:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2023-04-02 00:00:37,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:37,128 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:37,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 00:00:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:37,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:37,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -909250922, now seen corresponding path program 1 times [2023-04-02 00:00:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141657220] [2023-04-02 00:00:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 00:00:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2023-04-02 00:00:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-02 00:00:38,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141657220] [2023-04-02 00:00:38,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141657220] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023131428] [2023-04-02 00:00:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:38,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:38,816 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) [2023-04-02 00:00:38,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 00:00:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:39,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 00:00:39,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:00:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-02 00:00:40,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:00:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023131428] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:00:40,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:00:40,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-02 00:00:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866760371] [2023-04-02 00:00:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:00:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:00:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:00:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:00:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:00:40,934 INFO L87 Difference]: Start difference. First operand 244831 states and 318965 transitions. Second operand has 5 states, 5 states have (on average 178.8) internal successors, (894), 4 states have internal predecessors, (894), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 00:00:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:00:51,792 INFO L93 Difference]: Finished difference Result 512868 states and 667519 transitions. [2023-04-02 00:00:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:00:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 178.8) internal successors, (894), 4 states have internal predecessors, (894), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 963 [2023-04-02 00:00:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:00:52,899 INFO L225 Difference]: With dead ends: 512868 [2023-04-02 00:00:52,899 INFO L226 Difference]: Without dead ends: 266387 [2023-04-02 00:00:53,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-04-02 00:00:53,218 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 3959 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 8364 mSolverCounterSat, 1453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3959 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 9817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1453 IncrementalHoareTripleChecker+Valid, 8364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:00:53,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3959 Valid, 733 Invalid, 9817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1453 Valid, 8364 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-04-02 00:00:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266387 states. [2023-04-02 00:00:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266387 to 264900. [2023-04-02 00:00:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264900 states, 256227 states have (on average 1.0881366912932673) internal successors, (278810), 257924 states have internal predecessors, (278810), 1204 states have call successors, (1204), 1064 states have call predecessors, (1204), 7468 states have return successors, (60907), 5911 states have call predecessors, (60907), 1203 states have call successors, (60907) [2023-04-02 00:00:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264900 states to 264900 states and 340921 transitions. [2023-04-02 00:00:58,397 INFO L78 Accepts]: Start accepts. Automaton has 264900 states and 340921 transitions. Word has length 963 [2023-04-02 00:00:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:00:58,398 INFO L495 AbstractCegarLoop]: Abstraction has 264900 states and 340921 transitions. [2023-04-02 00:00:58,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.8) internal successors, (894), 4 states have internal predecessors, (894), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 00:00:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 264900 states and 340921 transitions. [2023-04-02 00:00:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2023-04-02 00:00:58,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:00:58,410 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:00:58,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 00:00:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:58,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:00:58,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:00:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1597526132, now seen corresponding path program 1 times [2023-04-02 00:00:58,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:00:58,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340099030] [2023-04-02 00:00:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:00:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:00:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:00:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:00:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:00:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-02 00:00:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2023-04-02 00:00:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:00:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 573 proven. 11 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-04-02 00:00:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:00:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340099030] [2023-04-02 00:00:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340099030] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:00:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991392751] [2023-04-02 00:00:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:00:59,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:00:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:00:59,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:00:59,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 00:01:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:00,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 00:01:00,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:01:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-04-02 00:01:00,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:01:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 419 proven. 89 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-04-02 00:01:00,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991392751] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:01:00,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:01:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2023-04-02 00:01:00,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489471133] [2023-04-02 00:01:00,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:01:00,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 00:01:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 00:01:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-04-02 00:01:00,690 INFO L87 Difference]: Start difference. First operand 264900 states and 340921 transitions. Second operand has 17 states, 17 states have (on average 55.294117647058826) internal successors, (940), 15 states have internal predecessors, (940), 6 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13)