/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:39:49,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:39:49,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:39:49,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:39:49,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:39:49,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:39:49,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:39:49,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:39:49,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:39:49,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:39:49,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:39:49,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:39:49,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:39:49,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:39:49,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:39:49,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:39:49,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:39:49,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:39:49,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:39:49,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:39:49,562 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 20:39:49,585 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:39:49,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:39:49,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:39:49,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:39:49,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:39:49,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:39:49,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:39:49,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:39:49,587 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:39:49,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:39:49,587 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:39:49,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:39:49,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:39:49,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:39:49,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:39:49,590 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:39:49,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:39:49,590 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:39:49,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:39:49,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:39:49,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:39:49,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:39:49,804 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:39:49,805 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:39:49,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label22.c [2023-04-01 20:39:50,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:39:51,135 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:39:51,135 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label22.c [2023-04-01 20:39:51,160 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa06f7ba/cc940be1e89d4f39a766699bd43a4e0f/FLAGea94eeac2 [2023-04-01 20:39:51,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa06f7ba/cc940be1e89d4f39a766699bd43a4e0f [2023-04-01 20:39:51,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:39:51,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:39:51,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:39:51,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:39:51,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:39:51,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:39:51" (1/1) ... [2023-04-01 20:39:51,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da17741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:51, skipping insertion in model container [2023-04-01 20:39:51,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:39:51" (1/1) ... [2023-04-01 20:39:51,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:39:51,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:39:52,097 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_label22.c[184143,184156] [2023-04-01 20:39:52,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:39:52,118 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:39:52,382 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_label22.c[184143,184156] [2023-04-01 20:39:52,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:39:52,403 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:39:52,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52 WrapperNode [2023-04-01 20:39:52,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:39:52,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:39:52,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:39:52,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:39:52,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:39:52,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:39:52,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:39:52,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:39:52,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (1/1) ... [2023-04-01 20:39:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:39:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:52,667 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 20:39:52,685 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 20:39:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:39:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:39:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:39:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:39:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:39:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:39:52,770 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:39:52,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:39:55,415 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:39:55,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:39:55,425 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:39:55,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:39:55 BoogieIcfgContainer [2023-04-01 20:39:55,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:39:55,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:39:55,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:39:55,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:39:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:39:51" (1/3) ... [2023-04-01 20:39:55,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae21b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:39:55, skipping insertion in model container [2023-04-01 20:39:55,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:52" (2/3) ... [2023-04-01 20:39:55,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae21b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:39:55, skipping insertion in model container [2023-04-01 20:39:55,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:39:55" (3/3) ... [2023-04-01 20:39:55,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label22.c [2023-04-01 20:39:55,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:39:55,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:39:55,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:39:55,493 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;@2fb6b73c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:39:55,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:39:55,499 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 20:39:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2023-04-01 20:39:55,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:55,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:39:55,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:55,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2117766011, now seen corresponding path program 1 times [2023-04-01 20:39:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599213792] [2023-04-01 20:39:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:55,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:58,420 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 20:39:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599213792] [2023-04-01 20:39:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599213792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:39:58,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:39:58,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:39:58,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049532609] [2023-04-01 20:39:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:39:58,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:39:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:39:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:39:58,484 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 204.5) internal successors, (818), 3 states have internal predecessors, (818), 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 20:40:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:03,245 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2023-04-01 20:40:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:40:03,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 204.5) internal successors, (818), 3 states have internal predecessors, (818), 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 825 [2023-04-01 20:40:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:03,268 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:40:03,268 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:40:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:40:03,278 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2683 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:03,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 62 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 20:40:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:40:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2023-04-01 20:40:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1664 states have (on average 1.7866586538461537) internal successors, (2973), 1666 states have internal predecessors, (2973), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:40:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions. [2023-04-01 20:40:03,371 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 825 [2023-04-01 20:40:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:03,373 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions. [2023-04-01 20:40:03,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 204.5) internal successors, (818), 3 states have internal predecessors, (818), 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 20:40:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions. [2023-04-01 20:40:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2023-04-01 20:40:03,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:03,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:40:03,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:03,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2057501785, now seen corresponding path program 1 times [2023-04-01 20:40:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782487233] [2023-04-01 20:40:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:04,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:04,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782487233] [2023-04-01 20:40:04,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782487233] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:40:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263954526] [2023-04-01 20:40:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:04,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:40:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:40:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:40:04,850 INFO L87 Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand has 8 states, 7 states have (on average 117.71428571428571) internal successors, (824), 5 states have internal predecessors, (824), 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 20:40:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:10,255 INFO L93 Difference]: Finished difference Result 5176 states and 9249 transitions. [2023-04-01 20:40:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:40:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 117.71428571428571) internal successors, (824), 5 states have internal predecessors, (824), 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 833 [2023-04-01 20:40:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:10,277 INFO L225 Difference]: With dead ends: 5176 [2023-04-01 20:40:10,277 INFO L226 Difference]: Without dead ends: 3493 [2023-04-01 20:40:10,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:10,281 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2758 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 7038 mSolverCounterSat, 1743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 8781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1743 IncrementalHoareTripleChecker+Valid, 7038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:10,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 180 Invalid, 8781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1743 Valid, 7038 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 20:40:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-04-01 20:40:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3437. [2023-04-01 20:40:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 3367 states have (on average 1.5562815562815562) internal successors, (5240), 3376 states have internal predecessors, (5240), 18 states have call successors, (18), 18 states have call predecessors, (18), 51 states have return successors, (120), 42 states have call predecessors, (120), 17 states have call successors, (120) [2023-04-01 20:40:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5378 transitions. [2023-04-01 20:40:10,372 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5378 transitions. Word has length 833 [2023-04-01 20:40:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 5378 transitions. [2023-04-01 20:40:10,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 117.71428571428571) internal successors, (824), 5 states have internal predecessors, (824), 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 20:40:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5378 transitions. [2023-04-01 20:40:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-04-01 20:40:10,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:10,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:40:10,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:10,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash -156103929, now seen corresponding path program 1 times [2023-04-01 20:40:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:10,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004899064] [2023-04-01 20:40:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:10,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:11,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:11,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004899064] [2023-04-01 20:40:11,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004899064] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:11,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:40:11,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:40:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344212984] [2023-04-01 20:40:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:11,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:40:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:40:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:40:11,262 INFO L87 Difference]: Start difference. First operand 3437 states and 5378 transitions. Second operand has 8 states, 7 states have (on average 121.0) internal successors, (847), 5 states have internal predecessors, (847), 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 20:40:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:15,614 INFO L93 Difference]: Finished difference Result 8775 states and 13819 transitions. [2023-04-01 20:40:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:40:15,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 121.0) internal successors, (847), 5 states have internal predecessors, (847), 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 856 [2023-04-01 20:40:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:15,634 INFO L225 Difference]: With dead ends: 8775 [2023-04-01 20:40:15,634 INFO L226 Difference]: Without dead ends: 5344 [2023-04-01 20:40:15,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:15,645 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6200 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5690 mSolverCounterSat, 1299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6200 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 6989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 5690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:15,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6200 Valid, 135 Invalid, 6989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1299 Valid, 5690 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 20:40:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2023-04-01 20:40:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5281. [2023-04-01 20:40:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5129 states have (on average 1.4213296938974458) internal successors, (7290), 5160 states have internal predecessors, (7290), 26 states have call successors, (26), 26 states have call predecessors, (26), 125 states have return successors, (329), 94 states have call predecessors, (329), 25 states have call successors, (329) [2023-04-01 20:40:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7645 transitions. [2023-04-01 20:40:15,761 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7645 transitions. Word has length 856 [2023-04-01 20:40:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:15,762 INFO L495 AbstractCegarLoop]: Abstraction has 5281 states and 7645 transitions. [2023-04-01 20:40:15,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 121.0) internal successors, (847), 5 states have internal predecessors, (847), 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 20:40:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7645 transitions. [2023-04-01 20:40:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2023-04-01 20:40:15,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:15,783 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:40:15,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:15,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 109702291, now seen corresponding path program 1 times [2023-04-01 20:40:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287940512] [2023-04-01 20:40:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:40:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:40:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287940512] [2023-04-01 20:40:18,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287940512] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428558432] [2023-04-01 20:40:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:18,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:18,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:18,333 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 20:40:18,334 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 20:40:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:18,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:40:18,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:18,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:40:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:40:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428558432] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:40:18,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:40:18,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-04-01 20:40:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899399907] [2023-04-01 20:40:18,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:40:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:40:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:40:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:40:18,941 INFO L87 Difference]: Start difference. First operand 5281 states and 7645 transitions. Second operand has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 12 states have internal predecessors, (932), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:40:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:33,527 INFO L93 Difference]: Finished difference Result 35580 states and 54910 transitions. [2023-04-01 20:40:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 20:40:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 12 states have internal predecessors, (932), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 875 [2023-04-01 20:40:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:33,626 INFO L225 Difference]: With dead ends: 35580 [2023-04-01 20:40:33,626 INFO L226 Difference]: Without dead ends: 30305 [2023-04-01 20:40:33,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1795 GetRequests, 1760 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:40:33,647 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 11900 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 18907 mSolverCounterSat, 4344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11900 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 23251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4344 IncrementalHoareTripleChecker+Valid, 18907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:33,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11900 Valid, 320 Invalid, 23251 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4344 Valid, 18907 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-04-01 20:40:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30305 states. [2023-04-01 20:40:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30305 to 29407. [2023-04-01 20:40:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29407 states, 28735 states have (on average 1.2003132068905515) internal successors, (34491), 28880 states have internal predecessors, (34491), 138 states have call successors, (138), 138 states have call predecessors, (138), 533 states have return successors, (3329), 388 states have call predecessors, (3329), 137 states have call successors, (3329) [2023-04-01 20:40:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29407 states to 29407 states and 37958 transitions. [2023-04-01 20:40:34,289 INFO L78 Accepts]: Start accepts. Automaton has 29407 states and 37958 transitions. Word has length 875 [2023-04-01 20:40:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:34,290 INFO L495 AbstractCegarLoop]: Abstraction has 29407 states and 37958 transitions. [2023-04-01 20:40:34,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 12 states have internal predecessors, (932), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:40:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29407 states and 37958 transitions. [2023-04-01 20:40:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2023-04-01 20:40:34,352 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:34,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:34,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:40:34,560 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 20:40:34,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:34,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash -823008441, now seen corresponding path program 1 times [2023-04-01 20:40:34,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:34,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934830046] [2023-04-01 20:40:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:40:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:35,475 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 20:40:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934830046] [2023-04-01 20:40:35,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934830046] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124666872] [2023-04-01 20:40:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:35,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:35,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:35,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:40:35,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:40:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:35,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:40:35,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:35,865 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 20:40:35,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:40:36,049 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 20:40:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124666872] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:40:36,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:40:36,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:40:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559559773] [2023-04-01 20:40:36,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:40:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:40:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:40:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:40:36,054 INFO L87 Difference]: Start difference. First operand 29407 states and 37958 transitions. Second operand has 12 states, 12 states have (on average 85.41666666666667) internal successors, (1025), 10 states have internal predecessors, (1025), 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 20:40:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:45,545 INFO L93 Difference]: Finished difference Result 90459 states and 127673 transitions. [2023-04-01 20:40:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 20:40:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 85.41666666666667) internal successors, (1025), 10 states have internal predecessors, (1025), 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 913 [2023-04-01 20:40:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:45,723 INFO L225 Difference]: With dead ends: 90459 [2023-04-01 20:40:45,724 INFO L226 Difference]: Without dead ends: 61058 [2023-04-01 20:40:45,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1864 GetRequests, 1833 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:40:45,767 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 9561 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 11355 mSolverCounterSat, 3021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9561 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 14376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3021 IncrementalHoareTripleChecker+Valid, 11355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9561 Valid, 376 Invalid, 14376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3021 Valid, 11355 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 20:40:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61058 states. [2023-04-01 20:40:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61058 to 51649. [2023-04-01 20:40:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51649 states, 50558 states have (on average 1.2040626607065152) internal successors, (60875), 50778 states have internal predecessors, (60875), 242 states have call successors, (242), 242 states have call predecessors, (242), 848 states have return successors, (7698), 628 states have call predecessors, (7698), 241 states have call successors, (7698) [2023-04-01 20:40:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51649 states to 51649 states and 68815 transitions. [2023-04-01 20:40:46,839 INFO L78 Accepts]: Start accepts. Automaton has 51649 states and 68815 transitions. Word has length 913 [2023-04-01 20:40:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 51649 states and 68815 transitions. [2023-04-01 20:40:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 85.41666666666667) internal successors, (1025), 10 states have internal predecessors, (1025), 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 20:40:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 51649 states and 68815 transitions. [2023-04-01 20:40:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2023-04-01 20:40:46,930 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:46,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:46,937 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 20:40:47,137 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 20:40:47,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:47,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2038479901, now seen corresponding path program 1 times [2023-04-01 20:40:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:47,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678917425] [2023-04-01 20:40:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:40:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 20:40:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 312 proven. 61 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-01 20:40:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:48,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678917425] [2023-04-01 20:40:48,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678917425] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:48,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242004744] [2023-04-01 20:40:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:48,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:48,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:48,390 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 20:40:48,392 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 20:40:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:48,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:40:48,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-01 20:40:48,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:40:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 316 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-01 20:40:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242004744] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:40:49,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:40:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 20:40:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094807047] [2023-04-01 20:40:49,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:40:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:40:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:40:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:40:49,100 INFO L87 Difference]: Start difference. First operand 51649 states and 68815 transitions. Second operand has 14 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 12 states have internal predecessors, (1146), 4 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:41:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:02,629 INFO L93 Difference]: Finished difference Result 161739 states and 222770 transitions. [2023-04-01 20:41:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-01 20:41:02,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 12 states have internal predecessors, (1146), 4 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 1080 [2023-04-01 20:41:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:03,006 INFO L225 Difference]: With dead ends: 161739 [2023-04-01 20:41:03,007 INFO L226 Difference]: Without dead ends: 110096 [2023-04-01 20:41:03,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2244 GetRequests, 2195 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 20:41:03,059 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 14386 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 13866 mSolverCounterSat, 6007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 19873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6007 IncrementalHoareTripleChecker+Valid, 13866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:03,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14386 Valid, 591 Invalid, 19873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6007 Valid, 13866 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-04-01 20:41:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110096 states. [2023-04-01 20:41:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110096 to 101352. [2023-04-01 20:41:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101352 states, 99595 states have (on average 1.1513529795672472) internal successors, (114669), 99900 states have internal predecessors, (114669), 478 states have call successors, (478), 478 states have call predecessors, (478), 1278 states have return successors, (14056), 973 states have call predecessors, (14056), 477 states have call successors, (14056) [2023-04-01 20:41:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101352 states to 101352 states and 129203 transitions. [2023-04-01 20:41:05,046 INFO L78 Accepts]: Start accepts. Automaton has 101352 states and 129203 transitions. Word has length 1080 [2023-04-01 20:41:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:05,047 INFO L495 AbstractCegarLoop]: Abstraction has 101352 states and 129203 transitions. [2023-04-01 20:41:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 12 states have internal predecessors, (1146), 4 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:41:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 101352 states and 129203 transitions. [2023-04-01 20:41:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2023-04-01 20:41:05,185 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:05,187 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 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] [2023-04-01 20:41:05,196 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 20:41:05,394 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 20:41:05,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:05,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1855143057, now seen corresponding path program 1 times [2023-04-01 20:41:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927599579] [2023-04-01 20:41:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:41:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 20:41:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 20:41:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2023-04-01 20:41:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-04-01 20:41:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-04-01 20:41:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-04-01 20:41:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1652 backedges. 550 proven. 394 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2023-04-01 20:41:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927599579] [2023-04-01 20:41:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927599579] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714031511] [2023-04-01 20:41:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:08,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:08,336 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 20:41:08,338 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 20:41:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:08,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:08,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1652 backedges. 1225 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-04-01 20:41:08,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1652 backedges. 899 proven. 126 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2023-04-01 20:41:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714031511] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:09,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:41:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973837249] [2023-04-01 20:41:09,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:41:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:41:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:41:09,279 INFO L87 Difference]: Start difference. First operand 101352 states and 129203 transitions. Second operand has 12 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 10 states have internal predecessors, (1385), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:41:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:22,352 INFO L93 Difference]: Finished difference Result 228928 states and 291907 transitions. [2023-04-01 20:41:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 20:41:22,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 10 states have internal predecessors, (1385), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 1399 [2023-04-01 20:41:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:22,641 INFO L225 Difference]: With dead ends: 228928 [2023-04-01 20:41:22,641 INFO L226 Difference]: Without dead ends: 121486 [2023-04-01 20:41:22,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2868 GetRequests, 2832 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:41:22,853 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 8914 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 20024 mSolverCounterSat, 4215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8923 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 24239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4215 IncrementalHoareTripleChecker+Valid, 20024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:22,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8923 Valid, 354 Invalid, 24239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4215 Valid, 20024 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-04-01 20:41:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121486 states. [2023-04-01 20:41:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121486 to 103925. [2023-04-01 20:41:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103925 states, 102414 states have (on average 1.0366551448044212) internal successors, (106168), 102648 states have internal predecessors, (106168), 494 states have call successors, (494), 494 states have call predecessors, (494), 1016 states have return successors, (7872), 782 states have call predecessors, (7872), 493 states have call successors, (7872) [2023-04-01 20:41:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103925 states to 103925 states and 114534 transitions. [2023-04-01 20:41:24,630 INFO L78 Accepts]: Start accepts. Automaton has 103925 states and 114534 transitions. Word has length 1399 [2023-04-01 20:41:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:24,630 INFO L495 AbstractCegarLoop]: Abstraction has 103925 states and 114534 transitions. [2023-04-01 20:41:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 10 states have internal predecessors, (1385), 4 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 20:41:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 103925 states and 114534 transitions. [2023-04-01 20:41:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2023-04-01 20:41:24,827 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:24,828 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:24,852 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 20:41:25,028 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 20:41:25,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:25,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash 440714893, now seen corresponding path program 1 times [2023-04-01 20:41:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709560222] [2023-04-01 20:41:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:41:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:41:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 20:41:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-04-01 20:41:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 569 proven. 333 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-04-01 20:41:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709560222] [2023-04-01 20:41:28,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709560222] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492137098] [2023-04-01 20:41:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:28,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:28,283 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 20:41:28,285 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 20:41:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:28,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:28,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 1033 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-04-01 20:41:28,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 858 proven. 80 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 20:41:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492137098] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:29,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:41:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271377033] [2023-04-01 20:41:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:29,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:41:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:41:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:41:29,287 INFO L87 Difference]: Start difference. First operand 103925 states and 114534 transitions. Second operand has 11 states, 11 states have (on average 147.0909090909091) internal successors, (1618), 9 states have internal predecessors, (1618), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:41:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:37,451 INFO L93 Difference]: Finished difference Result 214018 states and 235870 transitions. [2023-04-01 20:41:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 20:41:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 147.0909090909091) internal successors, (1618), 9 states have internal predecessors, (1618), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1412 [2023-04-01 20:41:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:37,687 INFO L225 Difference]: With dead ends: 214018 [2023-04-01 20:41:37,687 INFO L226 Difference]: Without dead ends: 109260 [2023-04-01 20:41:37,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2890 GetRequests, 2855 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=926, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 20:41:37,774 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 5212 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 12273 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 13297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 12273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:37,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 385 Invalid, 13297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 12273 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 20:41:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109260 states. [2023-04-01 20:41:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109260 to 107539. [2023-04-01 20:41:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107539 states, 105888 states have (on average 1.0278029616198248) internal successors, (108832), 106168 states have internal predecessors, (108832), 510 states have call successors, (510), 510 states have call predecessors, (510), 1140 states have return successors, (6432), 860 states have call predecessors, (6432), 509 states have call successors, (6432) [2023-04-01 20:41:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107539 states to 107539 states and 115774 transitions. [2023-04-01 20:41:39,567 INFO L78 Accepts]: Start accepts. Automaton has 107539 states and 115774 transitions. Word has length 1412 [2023-04-01 20:41:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:39,567 INFO L495 AbstractCegarLoop]: Abstraction has 107539 states and 115774 transitions. [2023-04-01 20:41:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 147.0909090909091) internal successors, (1618), 9 states have internal predecessors, (1618), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:41:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 107539 states and 115774 transitions. [2023-04-01 20:41:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2023-04-01 20:41:39,849 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:39,850 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:41:39,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:41:40,051 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 20:41:40,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:40,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -564009815, now seen corresponding path program 1 times [2023-04-01 20:41:40,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568677164] [2023-04-01 20:41:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:40,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:41:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-01 20:41:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2023-04-01 20:41:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2023-04-01 20:41:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-04-01 20:41:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2023-04-01 20:41:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 809 proven. 185 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2023-04-01 20:41:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568677164] [2023-04-01 20:41:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568677164] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711115698] [2023-04-01 20:41:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:41,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:41,697 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 20:41:41,699 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 20:41:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:42,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:42,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 1241 proven. 2 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2023-04-01 20:41:42,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 815 proven. 179 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2023-04-01 20:41:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711115698] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:42,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 20:41:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484590895] [2023-04-01 20:41:42,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:42,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:41:42,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:41:42,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:41:42,431 INFO L87 Difference]: Start difference. First operand 107539 states and 115774 transitions. Second operand has 13 states, 13 states have (on average 94.0) internal successors, (1222), 11 states have internal predecessors, (1222), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:41:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:52,178 INFO L93 Difference]: Finished difference Result 221976 states and 239258 transitions. [2023-04-01 20:41:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 20:41:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 94.0) internal successors, (1222), 11 states have internal predecessors, (1222), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1459 [2023-04-01 20:41:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:52,179 INFO L225 Difference]: With dead ends: 221976 [2023-04-01 20:41:52,179 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 20:41:52,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2995 GetRequests, 2953 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2023-04-01 20:41:52,310 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 16014 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 12325 mSolverCounterSat, 1220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16021 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 13545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 12325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:52,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16021 Valid, 331 Invalid, 13545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1220 Valid, 12325 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 20:41:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 20:41:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 20:41:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 20:41:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 20:41:52,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1459 [2023-04-01 20:41:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:52,312 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 20:41:52,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.0) internal successors, (1222), 11 states have internal predecessors, (1222), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:41:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 20:41:52,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 20:41:52,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 20:41:52,321 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 20:41:52,520 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 20:41:52,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 20:42:57,752 WARN L223 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 725 DAG size of output: 888 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)