/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem04_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:35:28,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:35:28,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:35:28,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:35:28,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:35:28,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:35:28,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:35:28,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:35:28,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:35:28,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:35:28,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:35:28,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:35:28,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:35:28,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:35:28,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:35:28,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:35:28,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:35:28,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:35:28,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:35:28,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:35:28,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 20:35:28,646 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:35:28,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:35:28,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:35:28,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:35:28,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:35:28,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:35:28,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:35:28,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:35:28,648 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:35:28,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:35:28,649 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:35:28,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:35:28,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:35:28,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:35:28,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:35:28,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:35:28,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:35:28,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:35:28,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:35:28,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:35:28,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:35:28,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:35:28,652 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:35:28,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:35:28,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:35:28,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:35:28,918 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:35:28,918 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:35:28,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label03.c [2023-04-01 20:35:29,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:35:30,197 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:35:30,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label03.c [2023-04-01 20:35:30,224 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b235a2ab5/32e5e34393544592942ae43a34e271da/FLAG9cd26cfad [2023-04-01 20:35:30,238 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b235a2ab5/32e5e34393544592942ae43a34e271da [2023-04-01 20:35:30,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:35:30,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:35:30,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:35:30,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:35:30,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:35:30,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:35:30" (1/1) ... [2023-04-01 20:35:30,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c85c67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:30, skipping insertion in model container [2023-04-01 20:35:30,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:35:30" (1/1) ... [2023-04-01 20:35:30,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:35:30,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:35:31,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label03.c[180326,180339] [2023-04-01 20:35:31,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:35:31,155 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:35:31,452 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label03.c[180326,180339] [2023-04-01 20:35:31,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:35:31,475 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:35:31,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31 WrapperNode [2023-04-01 20:35:31,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:35:31,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:35:31,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:35:31,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:35:31,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:35:31,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:35:31,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:35:31,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:35:31,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (1/1) ... [2023-04-01 20:35:31,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:35:31,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:31,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 20:35:31,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 20:35:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:35:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:35:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:35:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:35:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:35:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:35:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:35:31,875 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:35:31,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:35:34,897 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:35:34,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:35:34,912 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:35:34,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:35:34 BoogieIcfgContainer [2023-04-01 20:35:34,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:35:34,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:35:34,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:35:34,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:35:34,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:35:30" (1/3) ... [2023-04-01 20:35:34,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f94cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:35:34, skipping insertion in model container [2023-04-01 20:35:34,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:35:31" (2/3) ... [2023-04-01 20:35:34,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f94cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:35:34, skipping insertion in model container [2023-04-01 20:35:34,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:35:34" (3/3) ... [2023-04-01 20:35:34,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label03.c [2023-04-01 20:35:34,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:35:34,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:35:35,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:35:35,010 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;@1cc810da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:35:35,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:35:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 20:35:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-04-01 20:35:35,047 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:35,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:35,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:35,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1550063541, now seen corresponding path program 1 times [2023-04-01 20:35:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231681924] [2023-04-01 20:35:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:38,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:38,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231681924] [2023-04-01 20:35:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231681924] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:38,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:35:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836892762] [2023-04-01 20:35:38,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:35:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:35:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:35:38,125 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 197.5) internal successors, (790), 3 states have internal predecessors, (790), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:35:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:42,829 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2023-04-01 20:35:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:35:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 197.5) internal successors, (790), 3 states have internal predecessors, (790), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 797 [2023-04-01 20:35:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:42,859 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:35:42,860 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:35:42,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:35:42,875 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2693 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5375 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 5375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:42,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2693 Valid, 65 Invalid, 5834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 5375 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:35:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:35:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2023-04-01 20:35:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1664 states have (on average 1.8010817307692308) internal successors, (2997), 1666 states have internal predecessors, (2997), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:35:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2023-04-01 20:35:42,996 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 797 [2023-04-01 20:35:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:42,999 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2023-04-01 20:35:43,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 197.5) internal successors, (790), 3 states have internal predecessors, (790), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 20:35:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2023-04-01 20:35:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-04-01 20:35:43,016 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:43,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:43,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:35:43,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:43,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2060694057, now seen corresponding path program 1 times [2023-04-01 20:35:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025727893] [2023-04-01 20:35:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:35:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:44,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025727893] [2023-04-01 20:35:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025727893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:44,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:35:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:35:44,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742066277] [2023-04-01 20:35:44,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:35:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:35:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:35:44,812 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 5 states have internal predecessors, (796), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:50,326 INFO L93 Difference]: Finished difference Result 5170 states and 9293 transitions. [2023-04-01 20:35:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:35:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 5 states have internal predecessors, (796), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 805 [2023-04-01 20:35:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:50,338 INFO L225 Difference]: With dead ends: 5170 [2023-04-01 20:35:50,338 INFO L226 Difference]: Without dead ends: 3487 [2023-04-01 20:35:50,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:35:50,341 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2752 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 7043 mSolverCounterSat, 1740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1740 IncrementalHoareTripleChecker+Valid, 7043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 187 Invalid, 8783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1740 Valid, 7043 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 20:35:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-04-01 20:35:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3448. [2023-04-01 20:35:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3374 states have (on average 1.549792531120332) internal successors, (5229), 3384 states have internal predecessors, (5229), 18 states have call successors, (18), 18 states have call predecessors, (18), 55 states have return successors, (127), 45 states have call predecessors, (127), 17 states have call successors, (127) [2023-04-01 20:35:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 5374 transitions. [2023-04-01 20:35:50,405 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 5374 transitions. Word has length 805 [2023-04-01 20:35:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:50,405 INFO L495 AbstractCegarLoop]: Abstraction has 3448 states and 5374 transitions. [2023-04-01 20:35:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 5 states have internal predecessors, (796), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:35:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 5374 transitions. [2023-04-01 20:35:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2023-04-01 20:35:50,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:50,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:35:50,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:50,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 980048737, now seen corresponding path program 1 times [2023-04-01 20:35:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451399534] [2023-04-01 20:35:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 20:35:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:35:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451399534] [2023-04-01 20:35:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451399534] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096464880] [2023-04-01 20:35:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:51,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:51,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:35:51,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:35:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:51,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:35:51,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 20:35:51,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:35:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096464880] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:51,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:35:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:35:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200185647] [2023-04-01 20:35:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:35:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:35:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:35:51,753 INFO L87 Difference]: Start difference. First operand 3448 states and 5374 transitions. Second operand has 5 states, 5 states have (on average 159.8) internal successors, (799), 4 states have internal predecessors, (799), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:55,202 INFO L93 Difference]: Finished difference Result 10430 states and 16641 transitions. [2023-04-01 20:35:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 20:35:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 4 states have internal predecessors, (799), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 826 [2023-04-01 20:35:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:55,227 INFO L225 Difference]: With dead ends: 10430 [2023-04-01 20:35:55,227 INFO L226 Difference]: Without dead ends: 6988 [2023-04-01 20:35:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:35:55,233 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2994 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 1947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 6173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1947 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:55,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 100 Invalid, 6173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1947 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 20:35:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2023-04-01 20:35:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 6922. [2023-04-01 20:35:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6922 states, 6764 states have (on average 1.4801892371377883) internal successors, (10012), 6792 states have internal predecessors, (10012), 34 states have call successors, (34), 34 states have call predecessors, (34), 123 states have return successors, (449), 95 states have call predecessors, (449), 33 states have call successors, (449) [2023-04-01 20:35:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6922 states to 6922 states and 10495 transitions. [2023-04-01 20:35:55,363 INFO L78 Accepts]: Start accepts. Automaton has 6922 states and 10495 transitions. Word has length 826 [2023-04-01 20:35:55,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:55,363 INFO L495 AbstractCegarLoop]: Abstraction has 6922 states and 10495 transitions. [2023-04-01 20:35:55,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 4 states have internal predecessors, (799), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6922 states and 10495 transitions. [2023-04-01 20:35:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2023-04-01 20:35:55,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:55,378 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:55,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 20:35:55,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:55,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:55,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1206394637, now seen corresponding path program 1 times [2023-04-01 20:35:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883013480] [2023-04-01 20:35:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:35:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:35:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-01 20:35:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:35:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:35:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883013480] [2023-04-01 20:35:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883013480] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:35:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999353361] [2023-04-01 20:35:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:56,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:35:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:35:56,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:35:56,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:35:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:35:56,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:35:56,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:35:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 20:35:56,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:35:56,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999353361] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:35:56,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:35:56,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 20:35:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826035862] [2023-04-01 20:35:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:35:56,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:35:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:35:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:35:56,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:35:56,632 INFO L87 Difference]: Start difference. First operand 6922 states and 10495 transitions. Second operand has 5 states, 5 states have (on average 160.0) internal successors, (800), 4 states have internal predecessors, (800), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:35:59,171 INFO L93 Difference]: Finished difference Result 17388 states and 26830 transitions. [2023-04-01 20:35:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 20:35:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 160.0) internal successors, (800), 4 states have internal predecessors, (800), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 835 [2023-04-01 20:35:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:35:59,220 INFO L225 Difference]: With dead ends: 17388 [2023-04-01 20:35:59,221 INFO L226 Difference]: Without dead ends: 10472 [2023-04-01 20:35:59,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:35:59,234 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2595 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5097 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2595 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 5804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 5097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:35:59,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2595 Valid, 121 Invalid, 5804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 5097 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 20:35:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2023-04-01 20:35:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 10394. [2023-04-01 20:35:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10394 states, 10152 states have (on average 1.3694838455476754) internal successors, (13903), 10200 states have internal predecessors, (13903), 50 states have call successors, (50), 50 states have call predecessors, (50), 191 states have return successors, (793), 143 states have call predecessors, (793), 49 states have call successors, (793) [2023-04-01 20:35:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10394 states to 10394 states and 14746 transitions. [2023-04-01 20:35:59,427 INFO L78 Accepts]: Start accepts. Automaton has 10394 states and 14746 transitions. Word has length 835 [2023-04-01 20:35:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:35:59,427 INFO L495 AbstractCegarLoop]: Abstraction has 10394 states and 14746 transitions. [2023-04-01 20:35:59,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.0) internal successors, (800), 4 states have internal predecessors, (800), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:35:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10394 states and 14746 transitions. [2023-04-01 20:35:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2023-04-01 20:35:59,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:35:59,449 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:35:59,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:35:59,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 20:35:59,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:35:59,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:35:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1479155581, now seen corresponding path program 1 times [2023-04-01 20:35:59,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:35:59,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426206904] [2023-04-01 20:35:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:35:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:35:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-01 20:36:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-01 20:36:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 94 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-01 20:36:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426206904] [2023-04-01 20:36:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426206904] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926436341] [2023-04-01 20:36:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:00,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:00,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:36:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:01,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:36:01,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-01 20:36:01,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:36:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926436341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:36:01,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:36:01,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 20:36:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180256508] [2023-04-01 20:36:01,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:36:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:36:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:36:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:36:01,238 INFO L87 Difference]: Start difference. First operand 10394 states and 14746 transitions. Second operand has 5 states, 5 states have (on average 160.8) internal successors, (804), 4 states have internal predecessors, (804), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:36:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:04,030 INFO L93 Difference]: Finished difference Result 31287 states and 46136 transitions. [2023-04-01 20:36:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:36:04,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 4 states have internal predecessors, (804), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 900 [2023-04-01 20:36:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:04,106 INFO L225 Difference]: With dead ends: 31287 [2023-04-01 20:36:04,106 INFO L226 Difference]: Without dead ends: 20899 [2023-04-01 20:36:04,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:36:04,134 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3073 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 1784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1784 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:04,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 107 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1784 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 20:36:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20899 states. [2023-04-01 20:36:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20899 to 20819. [2023-04-01 20:36:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20819 states, 20322 states have (on average 1.2613915953154218) internal successors, (25634), 20430 states have internal predecessors, (25634), 98 states have call successors, (98), 98 states have call predecessors, (98), 398 states have return successors, (2353), 290 states have call predecessors, (2353), 97 states have call successors, (2353) [2023-04-01 20:36:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20819 states to 20819 states and 28085 transitions. [2023-04-01 20:36:04,468 INFO L78 Accepts]: Start accepts. Automaton has 20819 states and 28085 transitions. Word has length 900 [2023-04-01 20:36:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 20819 states and 28085 transitions. [2023-04-01 20:36:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 4 states have internal predecessors, (804), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:36:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20819 states and 28085 transitions. [2023-04-01 20:36:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2023-04-01 20:36:04,509 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:04,510 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:04,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 20:36:04,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:04,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:04,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1406918015, now seen corresponding path program 1 times [2023-04-01 20:36:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:04,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127873604] [2023-04-01 20:36:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:36:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-01 20:36:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 217 proven. 61 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 20:36:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127873604] [2023-04-01 20:36:05,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127873604] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304943997] [2023-04-01 20:36:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:05,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:05,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:05,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:05,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:36:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:05,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:05,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-01 20:36:05,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 218 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 20:36:06,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304943997] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:06,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:06,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:36:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900595162] [2023-04-01 20:36:06,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:06,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:36:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:36:06,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:36:06,300 INFO L87 Difference]: Start difference. First operand 20819 states and 28085 transitions. Second operand has 11 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 9 states have internal predecessors, (1181), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:36:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:14,693 INFO L93 Difference]: Finished difference Result 67100 states and 94210 transitions. [2023-04-01 20:36:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 20:36:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 9 states have internal predecessors, (1181), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 996 [2023-04-01 20:36:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:14,839 INFO L225 Difference]: With dead ends: 67100 [2023-04-01 20:36:14,839 INFO L226 Difference]: Without dead ends: 46287 [2023-04-01 20:36:14,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 1998 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:36:14,884 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 4820 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 13639 mSolverCounterSat, 1819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4823 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 15458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1819 IncrementalHoareTripleChecker+Valid, 13639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:14,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4823 Valid, 158 Invalid, 15458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1819 Valid, 13639 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 20:36:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46287 states. [2023-04-01 20:36:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46287 to 46209. [2023-04-01 20:36:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46209 states, 45041 states have (on average 1.2348082857840634) internal successors, (55617), 45298 states have internal predecessors, (55617), 250 states have call successors, (250), 214 states have call predecessors, (250), 917 states have return successors, (7537), 696 states have call predecessors, (7537), 249 states have call successors, (7537) [2023-04-01 20:36:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46209 states to 46209 states and 63404 transitions. [2023-04-01 20:36:15,847 INFO L78 Accepts]: Start accepts. Automaton has 46209 states and 63404 transitions. Word has length 996 [2023-04-01 20:36:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:15,847 INFO L495 AbstractCegarLoop]: Abstraction has 46209 states and 63404 transitions. [2023-04-01 20:36:15,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 9 states have internal predecessors, (1181), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:36:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 46209 states and 63404 transitions. [2023-04-01 20:36:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2023-04-01 20:36:15,948 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:15,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:15,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 20:36:16,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:16,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:16,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash -334838811, now seen corresponding path program 1 times [2023-04-01 20:36:16,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592373225] [2023-04-01 20:36:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:36:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-01 20:36:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 20:36:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-01 20:36:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 255 proven. 101 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 20:36:18,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592373225] [2023-04-01 20:36:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592373225] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662770278] [2023-04-01 20:36:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:18,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:18,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:18,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:36:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:18,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:18,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-04-01 20:36:18,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 259 proven. 101 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 20:36:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662770278] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:18,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:18,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 20:36:18,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384594385] [2023-04-01 20:36:18,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:36:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:36:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:36:18,721 INFO L87 Difference]: Start difference. First operand 46209 states and 63404 transitions. Second operand has 14 states, 14 states have (on average 84.14285714285714) internal successors, (1178), 12 states have internal predecessors, (1178), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:36:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:27,349 INFO L93 Difference]: Finished difference Result 128610 states and 188078 transitions. [2023-04-01 20:36:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-01 20:36:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 84.14285714285714) internal successors, (1178), 12 states have internal predecessors, (1178), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1035 [2023-04-01 20:36:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:27,605 INFO L225 Difference]: With dead ends: 128610 [2023-04-01 20:36:27,605 INFO L226 Difference]: Without dead ends: 82411 [2023-04-01 20:36:27,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 2092 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:36:27,668 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 22229 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 10364 mSolverCounterSat, 7712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22229 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 18076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7712 IncrementalHoareTripleChecker+Valid, 10364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:27,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22229 Valid, 317 Invalid, 18076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7712 Valid, 10364 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 20:36:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82411 states. [2023-04-01 20:36:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82411 to 81085. [2023-04-01 20:36:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81085 states, 79338 states have (on average 1.1980387708286067) internal successors, (95050), 79698 states have internal predecessors, (95050), 446 states have call successors, (446), 378 states have call predecessors, (446), 1300 states have return successors, (14299), 1008 states have call predecessors, (14299), 445 states have call successors, (14299) [2023-04-01 20:36:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81085 states to 81085 states and 109795 transitions. [2023-04-01 20:36:29,144 INFO L78 Accepts]: Start accepts. Automaton has 81085 states and 109795 transitions. Word has length 1035 [2023-04-01 20:36:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:29,145 INFO L495 AbstractCegarLoop]: Abstraction has 81085 states and 109795 transitions. [2023-04-01 20:36:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.14285714285714) internal successors, (1178), 12 states have internal predecessors, (1178), 5 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:36:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 81085 states and 109795 transitions. [2023-04-01 20:36:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2023-04-01 20:36:29,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:29,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:29,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:36:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:29,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:29,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1955076047, now seen corresponding path program 1 times [2023-04-01 20:36:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51734705] [2023-04-01 20:36:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:29,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-01 20:36:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-01 20:36:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 228 proven. 24 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 20:36:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51734705] [2023-04-01 20:36:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51734705] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214224102] [2023-04-01 20:36:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:31,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:31,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:31,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:31,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:36:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:31,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:31,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-04-01 20:36:31,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 247 proven. 80 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 20:36:32,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214224102] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:32,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:32,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 20:36:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007190247] [2023-04-01 20:36:32,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:32,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:36:32,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:36:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:36:32,328 INFO L87 Difference]: Start difference. First operand 81085 states and 109795 transitions. Second operand has 13 states, 13 states have (on average 94.46153846153847) internal successors, (1228), 11 states have internal predecessors, (1228), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:36:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:46,486 INFO L93 Difference]: Finished difference Result 220469 states and 314504 transitions. [2023-04-01 20:36:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-04-01 20:36:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 94.46153846153847) internal successors, (1228), 11 states have internal predecessors, (1228), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1034 [2023-04-01 20:36:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:47,041 INFO L225 Difference]: With dead ends: 220469 [2023-04-01 20:36:47,042 INFO L226 Difference]: Without dead ends: 139394 [2023-04-01 20:36:47,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2166 GetRequests, 2110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=2583, Unknown=0, NotChecked=0, Total=3192 [2023-04-01 20:36:47,155 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 14088 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 18339 mSolverCounterSat, 7747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14088 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 26086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7747 IncrementalHoareTripleChecker+Valid, 18339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:47,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14088 Valid, 546 Invalid, 26086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7747 Valid, 18339 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-04-01 20:36:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139394 states. [2023-04-01 20:36:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139394 to 137112. [2023-04-01 20:36:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137112 states, 134159 states have (on average 1.1606750199390277) internal successors, (155715), 134801 states have internal predecessors, (155715), 747 states have call successors, (747), 638 states have call predecessors, (747), 2205 states have return successors, (25596), 1672 states have call predecessors, (25596), 746 states have call successors, (25596) [2023-04-01 20:36:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137112 states to 137112 states and 182058 transitions. [2023-04-01 20:36:50,222 INFO L78 Accepts]: Start accepts. Automaton has 137112 states and 182058 transitions. Word has length 1034 [2023-04-01 20:36:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:50,223 INFO L495 AbstractCegarLoop]: Abstraction has 137112 states and 182058 transitions. [2023-04-01 20:36:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.46153846153847) internal successors, (1228), 11 states have internal predecessors, (1228), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:36:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 137112 states and 182058 transitions. [2023-04-01 20:36:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2023-04-01 20:36:50,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:50,548 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:50,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 20:36:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:50,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:50,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -353434601, now seen corresponding path program 1 times [2023-04-01 20:36:50,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:50,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651425444] [2023-04-01 20:36:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 20:36:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-01 20:36:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:36:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 302 proven. 154 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-04-01 20:36:51,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651425444] [2023-04-01 20:36:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651425444] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:36:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242708465] [2023-04-01 20:36:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:36:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:51,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:36:51,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:36:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:52,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:36:52,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:36:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 20:36:52,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:36:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 339 proven. 60 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 20:36:52,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242708465] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:36:52,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:36:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:36:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39281994] [2023-04-01 20:36:52,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:36:52,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:36:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:36:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:36:52,219 INFO L87 Difference]: Start difference. First operand 137112 states and 182058 transitions. Second operand has 12 states, 12 states have (on average 95.08333333333333) internal successors, (1141), 10 states have internal predecessors, (1141), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:37:03,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:03,203 INFO L93 Difference]: Finished difference Result 353321 states and 490008 transitions. [2023-04-01 20:37:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 20:37:03,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 95.08333333333333) internal successors, (1141), 10 states have internal predecessors, (1141), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1111 [2023-04-01 20:37:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:04,084 INFO L225 Difference]: With dead ends: 353321 [2023-04-01 20:37:04,084 INFO L226 Difference]: Without dead ends: 217049 [2023-04-01 20:37:04,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2285 GetRequests, 2249 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:37:04,274 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 15066 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 8293 mSolverCounterSat, 5201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15066 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5201 IncrementalHoareTripleChecker+Valid, 8293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:04,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15066 Valid, 369 Invalid, 13494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5201 Valid, 8293 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 20:37:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217049 states. [2023-04-01 20:37:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217049 to 207915. [2023-04-01 20:37:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207915 states, 204039 states have (on average 1.1163061963644205) internal successors, (227770), 204742 states have internal predecessors, (227770), 1138 states have call successors, (1138), 974 states have call predecessors, (1138), 2737 states have return successors, (31323), 2198 states have call predecessors, (31323), 1137 states have call successors, (31323) [2023-04-01 20:37:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207915 states to 207915 states and 260231 transitions. [2023-04-01 20:37:08,230 INFO L78 Accepts]: Start accepts. Automaton has 207915 states and 260231 transitions. Word has length 1111 [2023-04-01 20:37:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:08,230 INFO L495 AbstractCegarLoop]: Abstraction has 207915 states and 260231 transitions. [2023-04-01 20:37:08,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 95.08333333333333) internal successors, (1141), 10 states have internal predecessors, (1141), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:37:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 207915 states and 260231 transitions. [2023-04-01 20:37:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2023-04-01 20:37:08,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:08,597 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:08,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 20:37:08,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:08,801 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:08,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 391338985, now seen corresponding path program 1 times [2023-04-01 20:37:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817669977] [2023-04-01 20:37:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:37:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-04-01 20:37:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-04-01 20:37:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2023-04-01 20:37:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-04-01 20:37:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 614 proven. 346 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-04-01 20:37:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817669977] [2023-04-01 20:37:10,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817669977] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:10,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403386597] [2023-04-01 20:37:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:10,805 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:37:10,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 20:37:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:11,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:37:11,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 686 proven. 2 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2023-04-01 20:37:11,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 618 proven. 347 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-04-01 20:37:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403386597] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:12,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 20:37:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317749054] [2023-04-01 20:37:12,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:37:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:37:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:37:12,125 INFO L87 Difference]: Start difference. First operand 207915 states and 260231 transitions. Second operand has 13 states, 13 states have (on average 127.38461538461539) internal successors, (1656), 11 states have internal predecessors, (1656), 8 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 20:37:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:23,160 INFO L93 Difference]: Finished difference Result 436113 states and 545990 transitions. [2023-04-01 20:37:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 20:37:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 127.38461538461539) internal successors, (1656), 11 states have internal predecessors, (1656), 8 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 1403 [2023-04-01 20:37:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:23,929 INFO L225 Difference]: With dead ends: 436113 [2023-04-01 20:37:23,930 INFO L226 Difference]: Without dead ends: 229038 [2023-04-01 20:37:24,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2860 GetRequests, 2830 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2023-04-01 20:37:24,267 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 13136 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 13918 mSolverCounterSat, 3835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13136 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 17753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3835 IncrementalHoareTripleChecker+Valid, 13918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13136 Valid, 219 Invalid, 17753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3835 Valid, 13918 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 20:37:24,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229038 states. [2023-04-01 20:37:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229038 to 226217. [2023-04-01 20:37:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226217 states, 221871 states have (on average 1.078698883585507) internal successors, (239332), 222680 states have internal predecessors, (239332), 1210 states have call successors, (1210), 1058 states have call predecessors, (1210), 3135 states have return successors, (24019), 2478 states have call predecessors, (24019), 1209 states have call successors, (24019) [2023-04-01 20:37:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226217 states to 226217 states and 264561 transitions. [2023-04-01 20:37:28,246 INFO L78 Accepts]: Start accepts. Automaton has 226217 states and 264561 transitions. Word has length 1403 [2023-04-01 20:37:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:28,246 INFO L495 AbstractCegarLoop]: Abstraction has 226217 states and 264561 transitions. [2023-04-01 20:37:28,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.38461538461539) internal successors, (1656), 11 states have internal predecessors, (1656), 8 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 20:37:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 226217 states and 264561 transitions. [2023-04-01 20:37:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2023-04-01 20:37:28,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:28,612 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:28,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 20:37:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 20:37:28,813 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:28,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1050331925, now seen corresponding path program 1 times [2023-04-01 20:37:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340846869] [2023-04-01 20:37:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:37:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 20:37:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2023-04-01 20:37:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-04-01 20:37:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2023-04-01 20:37:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 645 proven. 384 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-04-01 20:37:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340846869] [2023-04-01 20:37:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340846869] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209354847] [2023-04-01 20:37:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:31,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:31,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:37:31,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 20:37:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:31,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:37:31,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 1176 proven. 2 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-04-01 20:37:32,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 870 proven. 205 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-04-01 20:37:33,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209354847] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:33,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:33,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:37:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843324809] [2023-04-01 20:37:33,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:33,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:37:33,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:37:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:37:33,079 INFO L87 Difference]: Start difference. First operand 226217 states and 264561 transitions. Second operand has 12 states, 12 states have (on average 142.41666666666666) internal successors, (1709), 10 states have internal predecessors, (1709), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 20:37:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:46,329 INFO L93 Difference]: Finished difference Result 453906 states and 525142 transitions. [2023-04-01 20:37:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 20:37:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 142.41666666666666) internal successors, (1709), 10 states have internal predecessors, (1709), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1463 [2023-04-01 20:37:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:46,984 INFO L225 Difference]: With dead ends: 453906 [2023-04-01 20:37:46,984 INFO L226 Difference]: Without dead ends: 210404 [2023-04-01 20:37:47,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2994 GetRequests, 2958 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:37:47,404 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 7901 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 17531 mSolverCounterSat, 4897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7910 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 22428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4897 IncrementalHoareTripleChecker+Valid, 17531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:47,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7910 Valid, 301 Invalid, 22428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4897 Valid, 17531 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-04-01 20:37:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210404 states. [2023-04-01 20:37:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210404 to 185260. [2023-04-01 20:37:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185260 states, 182173 states have (on average 1.0191685924917524) internal successors, (185665), 182750 states have internal predecessors, (185665), 874 states have call successors, (874), 874 states have call predecessors, (874), 2212 states have return successors, (8088), 1635 states have call predecessors, (8088), 873 states have call successors, (8088) [2023-04-01 20:37:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185260 states to 185260 states and 194627 transitions. [2023-04-01 20:37:50,335 INFO L78 Accepts]: Start accepts. Automaton has 185260 states and 194627 transitions. Word has length 1463 [2023-04-01 20:37:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:50,336 INFO L495 AbstractCegarLoop]: Abstraction has 185260 states and 194627 transitions. [2023-04-01 20:37:50,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.41666666666666) internal successors, (1709), 10 states have internal predecessors, (1709), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 20:37:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 185260 states and 194627 transitions. [2023-04-01 20:37:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1518 [2023-04-01 20:37:50,421 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:50,422 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:50,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 20:37:50,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:50,628 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:50,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1620871649, now seen corresponding path program 1 times [2023-04-01 20:37:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:50,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676015931] [2023-04-01 20:37:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:37:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:37:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:37:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:37:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:37:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-04-01 20:37:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-04-01 20:37:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 991 proven. 90 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2023-04-01 20:37:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676015931] [2023-04-01 20:37:52,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676015931] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149944926] [2023-04-01 20:37:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:52,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:52,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:37:52,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 20:37:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:53,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:37:53,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 1300 proven. 2 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2023-04-01 20:37:53,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 987 proven. 68 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-04-01 20:37:53,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149944926] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:53,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:53,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2023-04-01 20:37:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109343833] [2023-04-01 20:37:53,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:37:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:37:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:37:53,721 INFO L87 Difference]: Start difference. First operand 185260 states and 194627 transitions. Second operand has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 12 states have internal predecessors, (1234), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 20:38:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:03,028 INFO L93 Difference]: Finished difference Result 372500 states and 391733 transitions. [2023-04-01 20:38:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 20:38:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 12 states have internal predecessors, (1234), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 1517 [2023-04-01 20:38:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:03,498 INFO L225 Difference]: With dead ends: 372500 [2023-04-01 20:38:03,498 INFO L226 Difference]: Without dead ends: 188080 [2023-04-01 20:38:03,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3117 GetRequests, 3074 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=401, Invalid=1405, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 20:38:03,609 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17953 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 12372 mSolverCounterSat, 1547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17960 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 13919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1547 IncrementalHoareTripleChecker+Valid, 12372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:03,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17960 Valid, 289 Invalid, 13919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1547 Valid, 12372 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 20:38:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188080 states. [2023-04-01 20:38:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188080 to 183560. [2023-04-01 20:38:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183560 states, 180498 states have (on average 1.014731465168589) internal successors, (183157), 181080 states have internal predecessors, (183157), 866 states have call successors, (866), 866 states have call predecessors, (866), 2195 states have return successors, (6324), 1613 states have call predecessors, (6324), 865 states have call successors, (6324) [2023-04-01 20:38:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183560 states to 183560 states and 190347 transitions. [2023-04-01 20:38:06,500 INFO L78 Accepts]: Start accepts. Automaton has 183560 states and 190347 transitions. Word has length 1517 [2023-04-01 20:38:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:06,500 INFO L495 AbstractCegarLoop]: Abstraction has 183560 states and 190347 transitions. [2023-04-01 20:38:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 12 states have internal predecessors, (1234), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 20:38:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 183560 states and 190347 transitions. [2023-04-01 20:38:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1763 [2023-04-01 20:38:06,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:06,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:38:06,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 20:38:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 20:38:06,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:06,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1346306223, now seen corresponding path program 1 times [2023-04-01 20:38:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:06,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160015422] [2023-04-01 20:38:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:38:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:38:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:38:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-04-01 20:38:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2023-04-01 20:38:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-04-01 20:38:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1983 backedges. 951 proven. 8 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-04-01 20:38:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:38:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160015422] [2023-04-01 20:38:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160015422] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:38:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626316504] [2023-04-01 20:38:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:38:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:38:09,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:38:09,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 20:38:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:09,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:38:09,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:38:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1983 backedges. 959 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-04-01 20:38:10,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:38:10,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626316504] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:38:10,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:38:10,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 20:38:10,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083388304] [2023-04-01 20:38:10,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:38:10,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:38:10,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:38:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:38:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:38:10,169 INFO L87 Difference]: Start difference. First operand 183560 states and 190347 transitions. Second operand has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:38:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:13,103 INFO L93 Difference]: Finished difference Result 356136 states and 369515 transitions. [2023-04-01 20:38:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:38:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1762 [2023-04-01 20:38:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:13,491 INFO L225 Difference]: With dead ends: 356136 [2023-04-01 20:38:13,491 INFO L226 Difference]: Without dead ends: 180953 [2023-04-01 20:38:13,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1784 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:38:13,729 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 90 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 988 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 20:38:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180953 states. [2023-04-01 20:38:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180953 to 179278. [2023-04-01 20:38:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179278 states, 176300 states have (on average 1.0122404991491776) internal successors, (178458), 176862 states have internal predecessors, (178458), 846 states have call successors, (846), 846 states have call predecessors, (846), 2131 states have return successors, (5239), 1569 states have call predecessors, (5239), 845 states have call successors, (5239) [2023-04-01 20:38:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179278 states to 179278 states and 184543 transitions. [2023-04-01 20:38:16,949 INFO L78 Accepts]: Start accepts. Automaton has 179278 states and 184543 transitions. Word has length 1762 [2023-04-01 20:38:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:16,950 INFO L495 AbstractCegarLoop]: Abstraction has 179278 states and 184543 transitions. [2023-04-01 20:38:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:38:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 179278 states and 184543 transitions. [2023-04-01 20:38:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4976 [2023-04-01 20:38:17,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:17,646 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:38:17,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 20:38:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 20:38:17,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:17,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash 345275457, now seen corresponding path program 1 times [2023-04-01 20:38:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:17,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825738511] [2023-04-01 20:38:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:38:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:38:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:38:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-01 20:38:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 20:38:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-04-01 20:38:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-04-01 20:38:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2023-04-01 20:38:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1395 [2023-04-01 20:38:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2035 [2023-04-01 20:38:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2735 [2023-04-01 20:38:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2842 [2023-04-01 20:38:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3100 [2023-04-01 20:38:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3638 [2023-04-01 20:38:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3681 [2023-04-01 20:38:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19243 backedges. 4158 proven. 1519 refuted. 0 times theorem prover too weak. 13566 trivial. 0 not checked. [2023-04-01 20:38:26,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:38:26,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825738511] [2023-04-01 20:38:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825738511] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:38:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344548884] [2023-04-01 20:38:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:26,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:38:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:38:26,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:38:26,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 20:38:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:27,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 6413 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 20:38:27,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:38:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 19243 backedges. 11700 proven. 5 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2023-04-01 20:38:28,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:38:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19243 backedges. 5671 proven. 2096 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-04-01 20:38:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344548884] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:38:29,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:38:29,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 20:38:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494326195] [2023-04-01 20:38:29,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:38:29,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 20:38:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:38:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 20:38:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:38:29,943 INFO L87 Difference]: Start difference. First operand 179278 states and 184543 transitions. Second operand has 15 states, 15 states have (on average 195.8) internal successors, (2937), 13 states have internal predecessors, (2937), 7 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-04-01 20:38:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:48,804 INFO L93 Difference]: Finished difference Result 361029 states and 371352 transitions. [2023-04-01 20:38:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-04-01 20:38:48,805 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 195.8) internal successors, (2937), 13 states have internal predecessors, (2937), 7 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 4975 [2023-04-01 20:38:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:48,805 INFO L225 Difference]: With dead ends: 361029 [2023-04-01 20:38:48,805 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:38:48,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10135 GetRequests, 10058 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1978 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=893, Invalid=5113, Unknown=0, NotChecked=0, Total=6006 [2023-04-01 20:38:48,987 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 14622 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 28146 mSolverCounterSat, 1408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14623 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 29554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1408 IncrementalHoareTripleChecker+Valid, 28146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:48,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14623 Valid, 968 Invalid, 29554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1408 Valid, 28146 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-04-01 20:38:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:38:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:38:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:38:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:38:48,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4975 [2023-04-01 20:38:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:48,990 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:38:48,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 195.8) internal successors, (2937), 13 states have internal predecessors, (2937), 7 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-04-01 20:38:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:38:48,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:38:48,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:38:49,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 20:38:49,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 20:38:49,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.