/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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:43:55,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:43:55,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:43:55,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:43:55,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:43:55,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:43:55,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:43:55,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:43:55,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:43:55,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:43:55,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:43:55,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:43:55,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:43:55,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:43:55,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:43:55,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:43:55,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:43:55,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:43:55,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:43:55,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:43:55,562 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 20:43:55,590 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:43:55,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:43:55,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:43:55,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:43:55,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:43:55,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:43:55,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:43:55,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:43:55,593 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:43:55,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:43:55,593 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:43:55,594 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:43:55,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:43:55,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:43:55,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:43:55,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:43:55,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:43:55,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:43:55,598 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:43:55,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:43:55,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:43:55,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:43:55,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:43:55,846 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:43:55,847 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:43:55,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label38.c [2023-04-01 20:43:57,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:43:57,557 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:43:57,558 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label38.c [2023-04-01 20:43:57,590 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e42303c48/e841640aae524fd98cb8f189f4ad54d4/FLAG2a9cd030e [2023-04-01 20:43:57,605 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e42303c48/e841640aae524fd98cb8f189f4ad54d4 [2023-04-01 20:43:57,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:43:57,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:43:57,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:43:57,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:43:57,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:43:57,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:43:57" (1/1) ... [2023-04-01 20:43:57,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40456cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:57, skipping insertion in model container [2023-04-01 20:43:57,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:43:57" (1/1) ... [2023-04-01 20:43:57,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:43:57,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:43:58,619 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_label38.c[177597,177610] [2023-04-01 20:43:58,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:43:58,652 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:43:59,041 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_label38.c[177597,177610] [2023-04-01 20:43:59,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:43:59,081 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:43:59,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59 WrapperNode [2023-04-01 20:43:59,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:43:59,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:43:59,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:43:59,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:43:59,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:43:59,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:43:59,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:43:59,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:43:59,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:43:59,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:43:59,374 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 20:43:59,392 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 20:43:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:43:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:43:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:43:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:43:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:43:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:43:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:43:59,556 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:43:59,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:44:02,956 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:44:02,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:44:02,973 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:44:02,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:02 BoogieIcfgContainer [2023-04-01 20:44:02,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:44:02,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:44:02,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:44:02,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:44:02,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:43:57" (1/3) ... [2023-04-01 20:44:02,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d233aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:02, skipping insertion in model container [2023-04-01 20:44:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (2/3) ... [2023-04-01 20:44:02,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d233aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:02, skipping insertion in model container [2023-04-01 20:44:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:02" (3/3) ... [2023-04-01 20:44:02,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label38.c [2023-04-01 20:44:03,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:44:03,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:44:03,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:44:03,072 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;@1d83fdf0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:44:03,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:44:03,082 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 20:44:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-04-01 20:44:03,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:03,126 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] [2023-04-01 20:44:03,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:03,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1445481541, now seen corresponding path program 1 times [2023-04-01 20:44:03,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:03,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064454326] [2023-04-01 20:44:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:06,563 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 20:44:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064454326] [2023-04-01 20:44:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064454326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:06,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 20:44:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562282000] [2023-04-01 20:44:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 20:44:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 20:44:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:44:06,616 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 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 2 states have internal predecessors, (770), 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 20:44:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:12,132 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2023-04-01 20:44:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:44:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 2 states have internal predecessors, (770), 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 777 [2023-04-01 20:44:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:12,156 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:44:12,156 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:44:12,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:44:12,168 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2040 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:12,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 39 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 20:44:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:44:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2023-04-01 20:44:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1663 states have (on average 1.7690920024052916) internal successors, (2942), 1664 states have internal predecessors, (2942), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 20:44:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2023-04-01 20:44:12,286 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 777 [2023-04-01 20:44:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:12,289 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2023-04-01 20:44:12,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 2 states have internal predecessors, (770), 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 20:44:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2023-04-01 20:44:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-04-01 20:44:12,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:12,313 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:44:12,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:44:12,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:12,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1827530405, now seen corresponding path program 1 times [2023-04-01 20:44:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626441262] [2023-04-01 20:44:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626441262] [2023-04-01 20:44:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626441262] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:13,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:44:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081802937] [2023-04-01 20:44:13,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:44:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:44:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:44:13,927 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand has 8 states, 7 states have (on average 111.0) internal successors, (777), 5 states have internal predecessors, (777), 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 20:44:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:20,539 INFO L93 Difference]: Finished difference Result 5160 states and 9152 transitions. [2023-04-01 20:44:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:44:20,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 111.0) internal successors, (777), 5 states have internal predecessors, (777), 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 786 [2023-04-01 20:44:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:20,564 INFO L225 Difference]: With dead ends: 5160 [2023-04-01 20:44:20,565 INFO L226 Difference]: Without dead ends: 3479 [2023-04-01 20:44:20,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:44:20,578 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3107 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6976 mSolverCounterSat, 1459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 8435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1459 IncrementalHoareTripleChecker+Valid, 6976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:20,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 133 Invalid, 8435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1459 Valid, 6976 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 20:44:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-04-01 20:44:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3418. [2023-04-01 20:44:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3355 states have (on average 1.6748137108792847) internal successors, (5619), 3362 states have internal predecessors, (5619), 18 states have call successors, (18), 18 states have call predecessors, (18), 44 states have return successors, (106), 37 states have call predecessors, (106), 17 states have call successors, (106) [2023-04-01 20:44:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5743 transitions. [2023-04-01 20:44:20,728 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5743 transitions. Word has length 786 [2023-04-01 20:44:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:20,728 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 5743 transitions. [2023-04-01 20:44:20,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 111.0) internal successors, (777), 5 states have internal predecessors, (777), 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 20:44:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5743 transitions. [2023-04-01 20:44:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-04-01 20:44:20,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:20,747 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:44:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:44:20,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:20,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash -712853455, now seen corresponding path program 1 times [2023-04-01 20:44:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:20,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115443121] [2023-04-01 20:44:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:20,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115443121] [2023-04-01 20:44:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115443121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:22,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:22,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:44:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997507667] [2023-04-01 20:44:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:44:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:44:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:44:22,018 INFO L87 Difference]: Start difference. First operand 3418 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 5 states have internal predecessors, (788), 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 20:44:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:29,129 INFO L93 Difference]: Finished difference Result 13938 states and 24261 transitions. [2023-04-01 20:44:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:44:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 5 states have internal predecessors, (788), 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 797 [2023-04-01 20:44:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:29,176 INFO L225 Difference]: With dead ends: 13938 [2023-04-01 20:44:29,177 INFO L226 Difference]: Without dead ends: 10526 [2023-04-01 20:44:29,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:44:29,187 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7581 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6326 mSolverCounterSat, 2188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7581 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 8514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 6326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:29,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7581 Valid, 153 Invalid, 8514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2188 Valid, 6326 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 20:44:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10526 states. [2023-04-01 20:44:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10526 to 10479. [2023-04-01 20:44:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10479 states, 10206 states have (on average 1.4618851655888694) internal successors, (14920), 10262 states have internal predecessors, (14920), 50 states have call successors, (50), 50 states have call predecessors, (50), 222 states have return successors, (1111), 166 states have call predecessors, (1111), 49 states have call successors, (1111) [2023-04-01 20:44:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 16081 transitions. [2023-04-01 20:44:29,465 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 16081 transitions. Word has length 797 [2023-04-01 20:44:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:29,465 INFO L495 AbstractCegarLoop]: Abstraction has 10479 states and 16081 transitions. [2023-04-01 20:44:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 5 states have internal predecessors, (788), 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 20:44:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 16081 transitions. [2023-04-01 20:44:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2023-04-01 20:44:29,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:29,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:29,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:44:29,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:29,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 507663239, now seen corresponding path program 1 times [2023-04-01 20:44:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:29,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147402326] [2023-04-01 20:44:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:29,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:44:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:44:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147402326] [2023-04-01 20:44:30,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147402326] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:44:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443349674] [2023-04-01 20:44:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:30,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:30,988 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 20:44:30,989 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 20:44:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:31,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:44:31,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:44:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:31,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:44:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:31,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443349674] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:44:31,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:44:31,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:44:31,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197612753] [2023-04-01 20:44:31,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:44:31,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:44:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:44:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:44:31,797 INFO L87 Difference]: Start difference. First operand 10479 states and 16081 transitions. Second operand has 12 states, 12 states have (on average 81.41666666666667) internal successors, (977), 10 states have internal predecessors, (977), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:44:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:41,869 INFO L93 Difference]: Finished difference Result 50893 states and 83997 transitions. [2023-04-01 20:44:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 20:44:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 81.41666666666667) internal successors, (977), 10 states have internal predecessors, (977), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 865 [2023-04-01 20:44:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:42,061 INFO L225 Difference]: With dead ends: 50893 [2023-04-01 20:44:42,061 INFO L226 Difference]: Without dead ends: 40420 [2023-04-01 20:44:42,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1737 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:44:42,111 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 11422 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10017 mSolverCounterSat, 2971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11422 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 12988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2971 IncrementalHoareTripleChecker+Valid, 10017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11422 Valid, 345 Invalid, 12988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2971 Valid, 10017 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-04-01 20:44:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40420 states. [2023-04-01 20:44:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40420 to 34440. [2023-04-01 20:44:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34440 states, 33709 states have (on average 1.3323741434038388) internal successors, (44913), 33858 states have internal predecessors, (44913), 162 states have call successors, (162), 162 states have call predecessors, (162), 568 states have return successors, (5588), 419 states have call predecessors, (5588), 161 states have call successors, (5588) [2023-04-01 20:44:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34440 states to 34440 states and 50663 transitions. [2023-04-01 20:44:43,273 INFO L78 Accepts]: Start accepts. Automaton has 34440 states and 50663 transitions. Word has length 865 [2023-04-01 20:44:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:43,274 INFO L495 AbstractCegarLoop]: Abstraction has 34440 states and 50663 transitions. [2023-04-01 20:44:43,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.41666666666667) internal successors, (977), 10 states have internal predecessors, (977), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:44:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 34440 states and 50663 transitions. [2023-04-01 20:44:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2023-04-01 20:44:43,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:43,372 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:44:43,387 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 20:44:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:43,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:43,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash -896649975, now seen corresponding path program 1 times [2023-04-01 20:44:43,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127658080] [2023-04-01 20:44:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:43,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-01 20:44:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-01 20:44:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 201 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 20:44:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:45,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127658080] [2023-04-01 20:44:45,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127658080] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:44:45,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436588185] [2023-04-01 20:44:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:45,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:45,235 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 20:44:45,239 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 20:44:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:45,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:44:45,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:44:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-04-01 20:44:45,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:44:45,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436588185] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:45,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:44:45,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:44:45,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350013274] [2023-04-01 20:44:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:45,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:44:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:44:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:44:45,818 INFO L87 Difference]: Start difference. First operand 34440 states and 50663 transitions. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 4 states have internal predecessors, (821), 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 20:44:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:49,943 INFO L93 Difference]: Finished difference Result 86689 states and 129826 transitions. [2023-04-01 20:44:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:44:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 4 states have internal predecessors, (821), 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 987 [2023-04-01 20:44:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:50,139 INFO L225 Difference]: With dead ends: 86689 [2023-04-01 20:44:50,139 INFO L226 Difference]: Without dead ends: 52255 [2023-04-01 20:44:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:44:50,204 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2963 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 1980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1980 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:50,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 106 Invalid, 5787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1980 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 20:44:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52255 states. [2023-04-01 20:44:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52255 to 49603. [2023-04-01 20:44:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49603 states, 48672 states have (on average 1.217619986850756) internal successors, (59264), 48838 states have internal predecessors, (59264), 234 states have call successors, (234), 234 states have call predecessors, (234), 696 states have return successors, (6273), 530 states have call predecessors, (6273), 233 states have call successors, (6273) [2023-04-01 20:44:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49603 states to 49603 states and 65771 transitions. [2023-04-01 20:44:51,549 INFO L78 Accepts]: Start accepts. Automaton has 49603 states and 65771 transitions. Word has length 987 [2023-04-01 20:44:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:51,549 INFO L495 AbstractCegarLoop]: Abstraction has 49603 states and 65771 transitions. [2023-04-01 20:44:51,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 4 states have internal predecessors, (821), 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 20:44:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 49603 states and 65771 transitions. [2023-04-01 20:44:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2023-04-01 20:44:51,647 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:51,648 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, 4, 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, 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] [2023-04-01 20:44:51,658 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 20:44:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:51,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:51,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash 375588947, now seen corresponding path program 1 times [2023-04-01 20:44:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:51,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477470361] [2023-04-01 20:44:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:44:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 20:44:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-04-01 20:44:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 356 proven. 203 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 20:44:55,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477470361] [2023-04-01 20:44:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477470361] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:44:55,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80417937] [2023-04-01 20:44:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:55,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:55,697 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 20:44:55,724 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 20:44:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:56,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:44:56,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:44:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 605 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 20:44:56,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:44:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 555 proven. 28 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 20:44:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80417937] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:44:56,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:44:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:44:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772586532] [2023-04-01 20:44:56,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:44:56,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:44:56,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:44:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:44:56,722 INFO L87 Difference]: Start difference. First operand 49603 states and 65771 transitions. Second operand has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 10 states have internal predecessors, (1354), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:45:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:11,729 INFO L93 Difference]: Finished difference Result 163477 states and 221005 transitions. [2023-04-01 20:45:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-01 20:45:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 10 states have internal predecessors, (1354), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1145 [2023-04-01 20:45:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:12,137 INFO L225 Difference]: With dead ends: 163477 [2023-04-01 20:45:12,137 INFO L226 Difference]: Without dead ends: 113880 [2023-04-01 20:45:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2372 GetRequests, 2326 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1714, Unknown=0, NotChecked=0, Total=2162 [2023-04-01 20:45:12,219 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 12205 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 14371 mSolverCounterSat, 7236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12205 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 21607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7236 IncrementalHoareTripleChecker+Valid, 14371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:12,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12205 Valid, 386 Invalid, 21607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7236 Valid, 14371 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-04-01 20:45:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113880 states. [2023-04-01 20:45:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113880 to 110326. [2023-04-01 20:45:14,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110326 states, 108241 states have (on average 1.152613150285012) internal successors, (124760), 108656 states have internal predecessors, (124760), 518 states have call successors, (518), 518 states have call predecessors, (518), 1566 states have return successors, (15169), 1151 states have call predecessors, (15169), 517 states have call successors, (15169) [2023-04-01 20:45:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110326 states to 110326 states and 140447 transitions. [2023-04-01 20:45:14,938 INFO L78 Accepts]: Start accepts. Automaton has 110326 states and 140447 transitions. Word has length 1145 [2023-04-01 20:45:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:14,938 INFO L495 AbstractCegarLoop]: Abstraction has 110326 states and 140447 transitions. [2023-04-01 20:45:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 10 states have internal predecessors, (1354), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:45:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 110326 states and 140447 transitions. [2023-04-01 20:45:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2023-04-01 20:45:15,048 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:15,049 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:15,059 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 20:45:15,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:15,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:15,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash 635314177, now seen corresponding path program 1 times [2023-04-01 20:45:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275592053] [2023-04-01 20:45:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:17,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:45:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:45:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-01 20:45:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2023-04-01 20:45:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 624 proven. 190 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 20:45:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275592053] [2023-04-01 20:45:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275592053] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776240690] [2023-04-01 20:45:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:18,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:18,285 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 20:45:18,289 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 20:45:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:18,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:18,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 800 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-04-01 20:45:18,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 629 proven. 186 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-04-01 20:45:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776240690] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:19,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:45:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591712678] [2023-04-01 20:45:19,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:45:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:45:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:45:19,304 INFO L87 Difference]: Start difference. First operand 110326 states and 140447 transitions. Second operand has 13 states, 13 states have (on average 97.3076923076923) internal successors, (1265), 11 states have internal predecessors, (1265), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:45:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:36,420 INFO L93 Difference]: Finished difference Result 265505 states and 348580 transitions. [2023-04-01 20:45:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:45:36,421 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 97.3076923076923) internal successors, (1265), 11 states have internal predecessors, (1265), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1277 [2023-04-01 20:45:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:37,276 INFO L225 Difference]: With dead ends: 265505 [2023-04-01 20:45:37,276 INFO L226 Difference]: Without dead ends: 155185 [2023-04-01 20:45:37,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2618 GetRequests, 2582 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:45:37,429 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 14577 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 17282 mSolverCounterSat, 6465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14589 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 23747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6465 IncrementalHoareTripleChecker+Valid, 17282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:37,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14589 Valid, 331 Invalid, 23747 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6465 Valid, 17282 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-04-01 20:45:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155185 states. [2023-04-01 20:45:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155185 to 154255. [2023-04-01 20:45:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154255 states, 151312 states have (on average 1.1082795812625568) internal successors, (167696), 151835 states have internal predecessors, (167696), 875 states have call successors, (875), 722 states have call predecessors, (875), 2067 states have return successors, (23980), 1697 states have call predecessors, (23980), 874 states have call successors, (23980) [2023-04-01 20:45:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154255 states to 154255 states and 192551 transitions. [2023-04-01 20:45:41,059 INFO L78 Accepts]: Start accepts. Automaton has 154255 states and 192551 transitions. Word has length 1277 [2023-04-01 20:45:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:41,059 INFO L495 AbstractCegarLoop]: Abstraction has 154255 states and 192551 transitions. [2023-04-01 20:45:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.3076923076923) internal successors, (1265), 11 states have internal predecessors, (1265), 5 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:45:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 154255 states and 192551 transitions. [2023-04-01 20:45:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2023-04-01 20:45:41,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:41,471 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:41,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:41,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:41,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 686421825, now seen corresponding path program 1 times [2023-04-01 20:45:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402687372] [2023-04-01 20:45:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:45:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:45:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-04-01 20:45:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2023-04-01 20:45:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-04-01 20:45:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 764 proven. 190 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-04-01 20:45:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402687372] [2023-04-01 20:45:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402687372] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641641860] [2023-04-01 20:45:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:43,659 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 20:45:43,660 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 20:45:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:44,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:44,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 983 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-04-01 20:45:44,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 769 proven. 186 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-04-01 20:45:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641641860] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:44,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:44,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 20:45:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834376648] [2023-04-01 20:45:44,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:45:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:45:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:45:44,735 INFO L87 Difference]: Start difference. First operand 154255 states and 192551 transitions. Second operand has 13 states, 13 states have (on average 104.84615384615384) internal successors, (1363), 11 states have internal predecessors, (1363), 5 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:45:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:55,153 INFO L93 Difference]: Finished difference Result 315470 states and 393619 transitions. [2023-04-01 20:45:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 20:45:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 104.84615384615384) internal successors, (1363), 11 states have internal predecessors, (1363), 5 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1420 [2023-04-01 20:45:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:55,685 INFO L225 Difference]: With dead ends: 315470 [2023-04-01 20:45:55,685 INFO L226 Difference]: Without dead ends: 161225 [2023-04-01 20:45:55,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2887 GetRequests, 2861 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-04-01 20:45:55,848 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 12293 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 12070 mSolverCounterSat, 2275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12293 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 14345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2275 IncrementalHoareTripleChecker+Valid, 12070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:55,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12293 Valid, 291 Invalid, 14345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2275 Valid, 12070 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-04-01 20:45:55,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161225 states. [2023-04-01 20:45:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161225 to 159453. [2023-04-01 20:45:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159453 states, 156392 states have (on average 1.0865069824543454) internal successors, (169921), 156935 states have internal predecessors, (169921), 903 states have call successors, (903), 746 states have call predecessors, (903), 2157 states have return successors, (20632), 1771 states have call predecessors, (20632), 902 states have call successors, (20632) [2023-04-01 20:45:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159453 states to 159453 states and 191456 transitions. [2023-04-01 20:45:59,147 INFO L78 Accepts]: Start accepts. Automaton has 159453 states and 191456 transitions. Word has length 1420 [2023-04-01 20:45:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:59,151 INFO L495 AbstractCegarLoop]: Abstraction has 159453 states and 191456 transitions. [2023-04-01 20:45:59,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.84615384615384) internal successors, (1363), 11 states have internal predecessors, (1363), 5 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 20:45:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 159453 states and 191456 transitions. [2023-04-01 20:45:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1459 [2023-04-01 20:45:59,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:59,288 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:45:59,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:59,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:59,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2078622467, now seen corresponding path program 1 times [2023-04-01 20:45:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631632343] [2023-04-01 20:45:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:46:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-01 20:46:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2023-04-01 20:46:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 672 proven. 40 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-01 20:46:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631632343] [2023-04-01 20:46:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631632343] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127193400] [2023-04-01 20:46:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:03,441 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 20:46:03,443 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 20:46:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:03,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:46:03,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 20:46:04,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:46:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127193400] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:46:04,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:46:04,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-04-01 20:46:04,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616618396] [2023-04-01 20:46:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:46:04,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:46:04,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:46:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:46:04,750 INFO L87 Difference]: Start difference. First operand 159453 states and 191456 transitions. Second operand has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:46:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:08,889 INFO L93 Difference]: Finished difference Result 318066 states and 382078 transitions. [2023-04-01 20:46:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:46:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1458 [2023-04-01 20:46:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:09,456 INFO L225 Difference]: With dead ends: 318066 [2023-04-01 20:46:09,456 INFO L226 Difference]: Without dead ends: 159453 [2023-04-01 20:46:09,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1477 GetRequests, 1468 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:46:09,586 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 93 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 233 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 20:46:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159453 states. [2023-04-01 20:46:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159453 to 159453. [2023-04-01 20:46:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159453 states, 156392 states have (on average 1.0837702695790066) internal successors, (169493), 156935 states have internal predecessors, (169493), 903 states have call successors, (903), 746 states have call predecessors, (903), 2157 states have return successors, (19929), 1771 states have call predecessors, (19929), 902 states have call successors, (19929) [2023-04-01 20:46:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159453 states to 159453 states and 190325 transitions. [2023-04-01 20:46:12,885 INFO L78 Accepts]: Start accepts. Automaton has 159453 states and 190325 transitions. Word has length 1458 [2023-04-01 20:46:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:12,886 INFO L495 AbstractCegarLoop]: Abstraction has 159453 states and 190325 transitions. [2023-04-01 20:46:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:46:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 159453 states and 190325 transitions. [2023-04-01 20:46:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2023-04-01 20:46:13,023 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:13,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:13,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:13,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:13,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2000492225, now seen corresponding path program 1 times [2023-04-01 20:46:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845388250] [2023-04-01 20:46:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:13,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:46:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-04-01 20:46:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-04-01 20:46:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 744 proven. 410 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-04-01 20:46:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845388250] [2023-04-01 20:46:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845388250] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537582748] [2023-04-01 20:46:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:16,641 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 20:46:16,643 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 20:46:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:17,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:17,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 934 proven. 2 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-04-01 20:46:17,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 934 proven. 2 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-04-01 20:46:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537582748] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:17,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:17,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 20:46:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725792790] [2023-04-01 20:46:17,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:46:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:46:17,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:46:17,449 INFO L87 Difference]: Start difference. First operand 159453 states and 190325 transitions. Second operand has 13 states, 13 states have (on average 120.0) internal successors, (1560), 11 states have internal predecessors, (1560), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:46:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:32,819 INFO L93 Difference]: Finished difference Result 310371 states and 365727 transitions. [2023-04-01 20:46:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-01 20:46:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 120.0) internal successors, (1560), 11 states have internal predecessors, (1560), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 1536 [2023-04-01 20:46:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:33,159 INFO L225 Difference]: With dead ends: 310371 [2023-04-01 20:46:33,159 INFO L226 Difference]: Without dead ends: 150918 [2023-04-01 20:46:33,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3173 GetRequests, 3118 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2023-04-01 20:46:33,477 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 10794 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 20168 mSolverCounterSat, 2427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10799 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 22595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2427 IncrementalHoareTripleChecker+Valid, 20168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10799 Valid, 638 Invalid, 22595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2427 Valid, 20168 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-04-01 20:46:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150918 states. [2023-04-01 20:46:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150918 to 147421. [2023-04-01 20:46:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147421 states, 144526 states have (on average 1.0521013520058675) internal successors, (152056), 145106 states have internal predecessors, (152056), 690 states have call successors, (690), 690 states have call predecessors, (690), 2204 states have return successors, (9111), 1624 states have call predecessors, (9111), 689 states have call successors, (9111) [2023-04-01 20:46:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147421 states to 147421 states and 161857 transitions. [2023-04-01 20:46:35,638 INFO L78 Accepts]: Start accepts. Automaton has 147421 states and 161857 transitions. Word has length 1536 [2023-04-01 20:46:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:35,639 INFO L495 AbstractCegarLoop]: Abstraction has 147421 states and 161857 transitions. [2023-04-01 20:46:35,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.0) internal successors, (1560), 11 states have internal predecessors, (1560), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 20:46:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 147421 states and 161857 transitions. [2023-04-01 20:46:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1809 [2023-04-01 20:46:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:35,968 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:46:35,975 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 20:46:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:36,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:36,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash 796363087, now seen corresponding path program 1 times [2023-04-01 20:46:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399887287] [2023-04-01 20:46:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:46:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:46:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:46:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2023-04-01 20:46:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 977 [2023-04-01 20:46:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1359 proven. 260 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-04-01 20:46:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399887287] [2023-04-01 20:46:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399887287] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305439039] [2023-04-01 20:46:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:39,221 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 20:46:39,223 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 20:46:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 20:46:39,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1801 proven. 9 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-04-01 20:46:40,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1389 proven. 377 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 20:46:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305439039] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:41,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-04-01 20:46:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188423988] [2023-04-01 20:46:41,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 20:46:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 20:46:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:46:41,722 INFO L87 Difference]: Start difference. First operand 147421 states and 161857 transitions. Second operand has 15 states, 15 states have (on average 157.33333333333334) internal successors, (2360), 13 states have internal predecessors, (2360), 8 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-04-01 20:47:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:04,212 INFO L93 Difference]: Finished difference Result 296114 states and 325379 transitions. [2023-04-01 20:47:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-04-01 20:47:04,212 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 157.33333333333334) internal successors, (2360), 13 states have internal predecessors, (2360), 8 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 1808 [2023-04-01 20:47:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:47:04,515 INFO L225 Difference]: With dead ends: 296114 [2023-04-01 20:47:04,515 INFO L226 Difference]: Without dead ends: 148699 [2023-04-01 20:47:04,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3819 GetRequests, 3709 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1722, Invalid=9620, Unknown=0, NotChecked=0, Total=11342 [2023-04-01 20:47:04,835 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 18893 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 27075 mSolverCounterSat, 4812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18893 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 31887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4812 IncrementalHoareTripleChecker+Valid, 27075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:04,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18893 Valid, 754 Invalid, 31887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4812 Valid, 27075 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-04-01 20:47:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148699 states. [2023-04-01 20:47:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148699 to 143362. [2023-04-01 20:47:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143362 states, 140463 states have (on average 1.0336529904672405) internal successors, (145190), 141064 states have internal predecessors, (145190), 670 states have call successors, (670), 670 states have call predecessors, (670), 2228 states have return successors, (5936), 1627 states have call predecessors, (5936), 669 states have call successors, (5936) [2023-04-01 20:47:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143362 states to 143362 states and 151796 transitions. [2023-04-01 20:47:07,090 INFO L78 Accepts]: Start accepts. Automaton has 143362 states and 151796 transitions. Word has length 1808 [2023-04-01 20:47:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:07,091 INFO L495 AbstractCegarLoop]: Abstraction has 143362 states and 151796 transitions. [2023-04-01 20:47:07,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 157.33333333333334) internal successors, (2360), 13 states have internal predecessors, (2360), 8 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-04-01 20:47:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 143362 states and 151796 transitions. [2023-04-01 20:47:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1827 [2023-04-01 20:47:07,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:07,197 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:47:07,205 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 20:47:07,403 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,SelfDestructingSolverStorable10 [2023-04-01 20:47:07,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:07,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash 374582371, now seen corresponding path program 1 times [2023-04-01 20:47:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411218105] [2023-04-01 20:47:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 20:47:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-04-01 20:47:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-04-01 20:47:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2023-04-01 20:47:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1054 proven. 21 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2023-04-01 20:47:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411218105] [2023-04-01 20:47:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411218105] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947129937] [2023-04-01 20:47:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:10,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:10,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:10,464 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 20:47:10,465 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 20:47:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 20:47:11,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1223 proven. 58 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-04-01 20:47:11,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:47:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1279 proven. 2 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-04-01 20:47:12,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947129937] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:47:12,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:47:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2023-04-01 20:47:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81660698] [2023-04-01 20:47:12,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:47:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 20:47:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 20:47:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:47:12,928 INFO L87 Difference]: Start difference. First operand 143362 states and 151796 transitions. Second operand has 9 states, 9 states have (on average 235.0) internal successors, (2115), 7 states have internal predecessors, (2115), 4 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 20:47:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:47:22,243 INFO L93 Difference]: Finished difference Result 286404 states and 305496 transitions. [2023-04-01 20:47:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:47:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 235.0) internal successors, (2115), 7 states have internal predecessors, (2115), 4 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1826 [2023-04-01 20:47:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.