/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem05_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:03:04,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:03:04,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:03:04,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:03:04,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:03:04,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:03:04,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:03:04,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:03:04,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:03:04,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:03:04,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:03:04,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:03:04,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:03:04,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:03:04,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:03:04,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:03:04,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:03:04,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:03:04,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:03:04,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:03:04,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 21:03:04,361 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:03:04,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:03:04,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:03:04,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:03:04,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:03:04,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:03:04,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:03:04,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:03:04,369 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:03:04,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:03:04,369 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:03:04,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:03:04,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:03:04,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:03:04,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:03:04,371 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:03:04,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:03:04,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:03:04,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:03:04,651 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:03:04,651 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:03:04,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label52.c [2023-04-01 21:03:05,701 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:03:06,094 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:03:06,095 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label52.c [2023-04-01 21:03:06,129 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12204ece1/2961ca6a7a2a41bc976b8873bb76c4e8/FLAG4b107b4af [2023-04-01 21:03:06,143 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12204ece1/2961ca6a7a2a41bc976b8873bb76c4e8 [2023-04-01 21:03:06,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:03:06,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:03:06,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:03:06,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:03:06,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:03:06,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:03:06" (1/1) ... [2023-04-01 21:03:06,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e35fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:06, skipping insertion in model container [2023-04-01 21:03:06,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:03:06" (1/1) ... [2023-04-01 21:03:06,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:03:06,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:03:07,537 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label52.c[380386,380399] [2023-04-01 21:03:07,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:03:07,557 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:03:08,093 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label52.c[380386,380399] [2023-04-01 21:03:08,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:03:08,127 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:03:08,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08 WrapperNode [2023-04-01 21:03:08,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:03:08,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:03:08,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:03:08,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:03:08,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:03:08,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:03:08,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:03:08,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:03:08,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (1/1) ... [2023-04-01 21:03:08,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:03:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:08,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 21:03:08,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 21:03:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 21:03:08,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:03:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:03:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:03:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:03:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:03:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:03:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:03:08,515 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:03:08,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:03:13,639 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:03:13,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:03:13,654 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:03:13,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:03:13 BoogieIcfgContainer [2023-04-01 21:03:13,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:03:13,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:03:13,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:03:13,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:03:13,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:03:06" (1/3) ... [2023-04-01 21:03:13,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5cfa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:03:13, skipping insertion in model container [2023-04-01 21:03:13,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:03:08" (2/3) ... [2023-04-01 21:03:13,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5cfa66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:03:13, skipping insertion in model container [2023-04-01 21:03:13,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:03:13" (3/3) ... [2023-04-01 21:03:13,662 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label52.c [2023-04-01 21:03:13,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:03:13,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:03:13,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:03:13,728 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;@1a4770fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:03:13,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:03:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 21:03:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2023-04-01 21:03:13,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:13,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:03:13,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:13,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -352999343, now seen corresponding path program 1 times [2023-04-01 21:03:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164016986] [2023-04-01 21:03:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:03:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164016986] [2023-04-01 21:03:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164016986] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:20,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:03:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:03:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908015170] [2023-04-01 21:03:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:20,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:03:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:03:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:03:20,704 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:03:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:32,391 INFO L93 Difference]: Finished difference Result 8111 states and 15415 transitions. [2023-04-01 21:03:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:03:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1698 [2023-04-01 21:03:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:32,465 INFO L225 Difference]: With dead ends: 8111 [2023-04-01 21:03:32,465 INFO L226 Difference]: Without dead ends: 5821 [2023-04-01 21:03:32,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:03:32,494 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 6713 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 11483 mSolverCounterSat, 3615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6713 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 15098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3615 IncrementalHoareTripleChecker+Valid, 11483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:32,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6713 Valid, 503 Invalid, 15098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3615 Valid, 11483 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-04-01 21:03:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2023-04-01 21:03:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5769. [2023-04-01 21:03:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5700 states have (on average 1.7456140350877194) internal successors, (9950), 5703 states have internal predecessors, (9950), 26 states have call successors, (26), 26 states have call predecessors, (26), 42 states have return successors, (96), 39 states have call predecessors, (96), 25 states have call successors, (96) [2023-04-01 21:03:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 10072 transitions. [2023-04-01 21:03:32,712 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 10072 transitions. Word has length 1698 [2023-04-01 21:03:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:32,716 INFO L495 AbstractCegarLoop]: Abstraction has 5769 states and 10072 transitions. [2023-04-01 21:03:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:03:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 10072 transitions. [2023-04-01 21:03:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2023-04-01 21:03:32,776 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:32,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:03:32,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:03:32,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:32,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2086497720, now seen corresponding path program 1 times [2023-04-01 21:03:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540281705] [2023-04-01 21:03:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:03:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540281705] [2023-04-01 21:03:34,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540281705] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:34,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:03:34,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 21:03:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500383708] [2023-04-01 21:03:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:34,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 21:03:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:34,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 21:03:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:03:34,717 INFO L87 Difference]: Start difference. First operand 5769 states and 10072 transitions. Second operand has 8 states, 7 states have (on average 242.0) internal successors, (1694), 5 states have internal predecessors, (1694), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:03:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:48,240 INFO L93 Difference]: Finished difference Result 22483 states and 40438 transitions. [2023-04-01 21:03:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 21:03:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 242.0) internal successors, (1694), 5 states have internal predecessors, (1694), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1707 [2023-04-01 21:03:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:48,370 INFO L225 Difference]: With dead ends: 22483 [2023-04-01 21:03:48,370 INFO L226 Difference]: Without dead ends: 16720 [2023-04-01 21:03:48,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 21:03:48,386 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 10104 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 18523 mSolverCounterSat, 4011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10104 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 22534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4011 IncrementalHoareTripleChecker+Valid, 18523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:48,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10104 Valid, 1417 Invalid, 22534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4011 Valid, 18523 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-04-01 21:03:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16720 states. [2023-04-01 21:03:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16720 to 16655. [2023-04-01 21:03:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16655 states, 16332 states have (on average 1.545860886602988) internal successors, (25247), 16356 states have internal predecessors, (25247), 74 states have call successors, (74), 74 states have call predecessors, (74), 248 states have return successors, (1200), 224 states have call predecessors, (1200), 73 states have call successors, (1200) [2023-04-01 21:03:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16655 states to 16655 states and 26521 transitions. [2023-04-01 21:03:48,707 INFO L78 Accepts]: Start accepts. Automaton has 16655 states and 26521 transitions. Word has length 1707 [2023-04-01 21:03:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:48,707 INFO L495 AbstractCegarLoop]: Abstraction has 16655 states and 26521 transitions. [2023-04-01 21:03:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 242.0) internal successors, (1694), 5 states have internal predecessors, (1694), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:03:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16655 states and 26521 transitions. [2023-04-01 21:03:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2023-04-01 21:03:48,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:48,792 INFO L195 NwaCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:03:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 21:03:48,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:48,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1676410874, now seen corresponding path program 1 times [2023-04-01 21:03:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68839016] [2023-04-01 21:03:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:03:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68839016] [2023-04-01 21:03:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68839016] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:03:50,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:03:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059601260] [2023-04-01 21:03:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:03:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:03:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:03:50,182 INFO L87 Difference]: Start difference. First operand 16655 states and 26521 transitions. Second operand has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:03:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:59,182 INFO L93 Difference]: Finished difference Result 50200 states and 84566 transitions. [2023-04-01 21:03:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 21:03:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1716 [2023-04-01 21:03:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:59,270 INFO L225 Difference]: With dead ends: 50200 [2023-04-01 21:03:59,270 INFO L226 Difference]: Without dead ends: 33551 [2023-04-01 21:03:59,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:03:59,308 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 11260 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 13117 mSolverCounterSat, 3384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11260 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 16501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3384 IncrementalHoareTripleChecker+Valid, 13117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:59,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11260 Valid, 939 Invalid, 16501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3384 Valid, 13117 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-01 21:03:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33551 states. [2023-04-01 21:03:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33551 to 33420. [2023-04-01 21:03:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33420 states, 32533 states have (on average 1.3891125933667352) internal successors, (45192), 32622 states have internal predecessors, (45192), 146 states have call successors, (146), 146 states have call predecessors, (146), 740 states have return successors, (5527), 651 states have call predecessors, (5527), 145 states have call successors, (5527) [2023-04-01 21:03:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33420 states to 33420 states and 50865 transitions. [2023-04-01 21:03:59,863 INFO L78 Accepts]: Start accepts. Automaton has 33420 states and 50865 transitions. Word has length 1716 [2023-04-01 21:03:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:59,864 INFO L495 AbstractCegarLoop]: Abstraction has 33420 states and 50865 transitions. [2023-04-01 21:03:59,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:03:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 33420 states and 50865 transitions. [2023-04-01 21:03:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2023-04-01 21:03:59,948 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:59,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:03:59,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 21:03:59,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:59,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash 891440411, now seen corresponding path program 1 times [2023-04-01 21:03:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:59,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204584956] [2023-04-01 21:03:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-01 21:04:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 21:04:02,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204584956] [2023-04-01 21:04:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204584956] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070622065] [2023-04-01 21:04:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:02,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:02,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:02,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:04:02,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 21:04:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:02,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:04:02,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:03,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:04:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070622065] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:04:03,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:04:03,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 21:04:03,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029081850] [2023-04-01 21:04:03,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:04:03,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 21:04:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 21:04:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 21:04:03,259 INFO L87 Difference]: Start difference. First operand 33420 states and 50865 transitions. Second operand has 15 states, 15 states have (on average 117.6) internal successors, (1764), 13 states have internal predecessors, (1764), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 21:04:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:37,542 INFO L93 Difference]: Finished difference Result 168430 states and 319750 transitions. [2023-04-01 21:04:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-04-01 21:04:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 117.6) internal successors, (1764), 13 states have internal predecessors, (1764), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 1738 [2023-04-01 21:04:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:38,089 INFO L225 Difference]: With dead ends: 168430 [2023-04-01 21:04:38,089 INFO L226 Difference]: Without dead ends: 135016 [2023-04-01 21:04:38,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3615 GetRequests, 3519 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3297 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1593, Invalid=7719, Unknown=0, NotChecked=0, Total=9312 [2023-04-01 21:04:38,585 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 43999 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 46028 mSolverCounterSat, 17614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43999 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 63642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17614 IncrementalHoareTripleChecker+Valid, 46028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:38,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43999 Valid, 3302 Invalid, 63642 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17614 Valid, 46028 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time] [2023-04-01 21:04:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135016 states. [2023-04-01 21:04:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135016 to 134121. [2023-04-01 21:04:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134121 states, 129767 states have (on average 1.1429562215355213) internal successors, (148318), 130395 states have internal predecessors, (148318), 578 states have call successors, (578), 578 states have call predecessors, (578), 3775 states have return successors, (43957), 3147 states have call predecessors, (43957), 577 states have call successors, (43957) [2023-04-01 21:04:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134121 states to 134121 states and 192853 transitions. [2023-04-01 21:04:42,360 INFO L78 Accepts]: Start accepts. Automaton has 134121 states and 192853 transitions. Word has length 1738 [2023-04-01 21:04:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:42,363 INFO L495 AbstractCegarLoop]: Abstraction has 134121 states and 192853 transitions. [2023-04-01 21:04:42,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 117.6) internal successors, (1764), 13 states have internal predecessors, (1764), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 21:04:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 134121 states and 192853 transitions. [2023-04-01 21:04:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1758 [2023-04-01 21:04:42,845 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:42,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:04:42,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 21:04:43,054 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 21:04:43,054 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:43,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1838977207, now seen corresponding path program 1 times [2023-04-01 21:04:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461405161] [2023-04-01 21:04:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:43,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-01 21:04:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:04:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461405161] [2023-04-01 21:04:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461405161] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397615438] [2023-04-01 21:04:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:44,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:04:44,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 21:04:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:45,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:04:45,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:45,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:04:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:45,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397615438] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:04:45,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:04:45,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:04:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647162067] [2023-04-01 21:04:45,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:04:45,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:04:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:04:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:04:45,499 INFO L87 Difference]: Start difference. First operand 134121 states and 192853 transitions. Second operand has 12 states, 12 states have (on average 149.91666666666666) internal successors, (1799), 10 states have internal predecessors, (1799), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:05:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:05:08,138 INFO L93 Difference]: Finished difference Result 389550 states and 579747 transitions. [2023-04-01 21:05:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 21:05:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 149.91666666666666) internal successors, (1799), 10 states have internal predecessors, (1799), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1757 [2023-04-01 21:05:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:05:08,906 INFO L225 Difference]: With dead ends: 389550 [2023-04-01 21:05:08,907 INFO L226 Difference]: Without dead ends: 255435 [2023-04-01 21:05:09,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3576 GetRequests, 3538 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=1193, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 21:05:09,124 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 28333 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 33655 mSolverCounterSat, 4785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28341 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 38440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4785 IncrementalHoareTripleChecker+Valid, 33655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:05:09,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28341 Valid, 1739 Invalid, 38440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4785 Valid, 33655 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2023-04-01 21:05:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255435 states. [2023-04-01 21:05:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255435 to 225889. [2023-04-01 21:05:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225889 states, 220634 states have (on average 1.066494737891712) internal successors, (235305), 221301 states have internal predecessors, (235305), 1003 states have call successors, (1003), 1002 states have call predecessors, (1003), 4251 states have return successors, (30051), 3585 states have call predecessors, (30051), 1002 states have call successors, (30051) [2023-04-01 21:05:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225889 states to 225889 states and 266359 transitions. [2023-04-01 21:05:13,141 INFO L78 Accepts]: Start accepts. Automaton has 225889 states and 266359 transitions. Word has length 1757 [2023-04-01 21:05:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:05:13,141 INFO L495 AbstractCegarLoop]: Abstraction has 225889 states and 266359 transitions. [2023-04-01 21:05:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.91666666666666) internal successors, (1799), 10 states have internal predecessors, (1799), 4 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:05:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 225889 states and 266359 transitions. [2023-04-01 21:05:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1880 [2023-04-01 21:05:13,612 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:05:13,613 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:05:13,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 21:05:13,820 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 21:05:13,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:05:13,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:05:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1206626113, now seen corresponding path program 1 times [2023-04-01 21:05:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:05:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185212439] [2023-04-01 21:05:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:13,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:05:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:05:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:05:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-01 21:05:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-01 21:05:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 172 proven. 57 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-01 21:05:15,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:05:15,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185212439] [2023-04-01 21:05:15,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185212439] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:05:15,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656062512] [2023-04-01 21:05:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:15,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:05:15,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:05:15,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 21:05:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:16,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:05:16,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:05:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-04-01 21:05:16,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:05:16,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656062512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:05:16,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:05:16,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 21:05:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914226259] [2023-04-01 21:05:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:05:16,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:05:16,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:05:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:05:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 21:05:16,466 INFO L87 Difference]: Start difference. First operand 225889 states and 266359 transitions. Second operand has 5 states, 5 states have (on average 345.6) internal successors, (1728), 4 states have internal predecessors, (1728), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:05:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:05:25,767 INFO L93 Difference]: Finished difference Result 507317 states and 603947 transitions. [2023-04-01 21:05:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:05:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 345.6) internal successors, (1728), 4 states have internal predecessors, (1728), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1879 [2023-04-01 21:05:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:05:26,763 INFO L225 Difference]: With dead ends: 507317 [2023-04-01 21:05:26,763 INFO L226 Difference]: Without dead ends: 281438 [2023-04-01 21:05:26,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1893 GetRequests, 1882 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:05:26,941 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 6365 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 9486 mSolverCounterSat, 3118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6365 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 12604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3118 IncrementalHoareTripleChecker+Valid, 9486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:05:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6365 Valid, 1442 Invalid, 12604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3118 Valid, 9486 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 21:05:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281438 states. [2023-04-01 21:05:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281438 to 277213. [2023-04-01 21:05:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277213 states, 271074 states have (on average 1.0613338055291175) internal successors, (287700), 271848 states have internal predecessors, (287700), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 4903 states have return successors, (37259), 4130 states have call predecessors, (37259), 1234 states have call successors, (37259) [2023-04-01 21:05:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277213 states to 277213 states and 326194 transitions. [2023-04-01 21:05:31,472 INFO L78 Accepts]: Start accepts. Automaton has 277213 states and 326194 transitions. Word has length 1879 [2023-04-01 21:05:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:05:31,472 INFO L495 AbstractCegarLoop]: Abstraction has 277213 states and 326194 transitions. [2023-04-01 21:05:31,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.6) internal successors, (1728), 4 states have internal predecessors, (1728), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:05:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 277213 states and 326194 transitions. [2023-04-01 21:05:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2124 [2023-04-01 21:05:31,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:05:31,747 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:05:31,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 21:05:31,953 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 21:05:31,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:05:31,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:05:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1220012679, now seen corresponding path program 1 times [2023-04-01 21:05:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:05:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545457795] [2023-04-01 21:05:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:05:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:05:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:05:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:05:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:05:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 21:05:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2023-04-01 21:05:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 441 proven. 13 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 21:05:35,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:05:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545457795] [2023-04-01 21:05:35,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545457795] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:05:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373392310] [2023-04-01 21:05:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:35,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:35,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:05:35,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:05:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 21:05:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:35,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-01 21:05:35,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:05:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-04-01 21:05:35,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:05:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373392310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:05:35,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:05:35,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2023-04-01 21:05:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4038567] [2023-04-01 21:05:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:05:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:05:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:05:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:05:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:05:35,836 INFO L87 Difference]: Start difference. First operand 277213 states and 326194 transitions. Second operand has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:05:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:05:41,807 INFO L93 Difference]: Finished difference Result 554358 states and 652731 transitions. [2023-04-01 21:05:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:05:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 2123 [2023-04-01 21:05:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:05:42,856 INFO L225 Difference]: With dead ends: 554358 [2023-04-01 21:05:42,856 INFO L226 Difference]: Without dead ends: 277155 [2023-04-01 21:05:43,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2142 GetRequests, 2135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:05:43,077 INFO L413 NwaCegarLoop]: 3009 mSDtfsCounter, 2114 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 6120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:05:43,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2114 Valid, 3316 Invalid, 6120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 21:05:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277155 states. [2023-04-01 21:05:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277155 to 277152. [2023-04-01 21:05:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277152 states, 271033 states have (on average 1.0534473661878812) internal successors, (285519), 271802 states have internal predecessors, (285519), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 4883 states have return successors, (34056), 4115 states have call predecessors, (34056), 1234 states have call successors, (34056) [2023-04-01 21:05:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277152 states to 277152 states and 320810 transitions. [2023-04-01 21:05:47,541 INFO L78 Accepts]: Start accepts. Automaton has 277152 states and 320810 transitions. Word has length 2123 [2023-04-01 21:05:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:05:47,542 INFO L495 AbstractCegarLoop]: Abstraction has 277152 states and 320810 transitions. [2023-04-01 21:05:47,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:05:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 277152 states and 320810 transitions. [2023-04-01 21:05:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2666 [2023-04-01 21:05:48,238 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:05:48,239 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, 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, 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, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:05:48,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 21:05:48,445 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 21:05:48,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:05:48,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:05:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1439968189, now seen corresponding path program 1 times [2023-04-01 21:05:48,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:05:48,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190623101] [2023-04-01 21:05:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:05:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:05:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:05:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:05:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:05:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-01 21:05:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2023-04-01 21:05:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2023-04-01 21:05:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:05:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 878 [2023-04-01 21:05:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 1237 proven. 368 refuted. 0 times theorem prover too weak. 1198 trivial. 0 not checked. [2023-04-01 21:05:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:05:50,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190623101] [2023-04-01 21:05:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190623101] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:05:50,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300018675] [2023-04-01 21:05:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:05:50,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:05:50,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:05:50,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:05:50,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 21:05:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:05:51,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 21:05:51,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:05:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 1372 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-04-01 21:05:52,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:05:52,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300018675] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:05:52,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:05:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 21:05:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332171446] [2023-04-01 21:05:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:05:52,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:05:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:05:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:05:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:05:52,249 INFO L87 Difference]: Start difference. First operand 277152 states and 320810 transitions. Second operand has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 2 states have internal predecessors, (2020), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 21:05:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:05:56,839 INFO L93 Difference]: Finished difference Result 554129 states and 642072 transitions. [2023-04-01 21:05:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:05:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 2 states have internal predecessors, (2020), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 2665 [2023-04-01 21:05:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:05:57,997 INFO L225 Difference]: With dead ends: 554129 [2023-04-01 21:05:57,997 INFO L226 Difference]: Without dead ends: 276987 [2023-04-01 21:05:58,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2687 GetRequests, 2681 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:05:58,189 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 3503 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3503 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:05:58,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3503 Valid, 504 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 21:05:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276987 states. [2023-04-01 21:06:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276987 to 276987. [2023-04-01 21:06:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276987 states, 270917 states have (on average 1.0533558248467243) internal successors, (285372), 271674 states have internal predecessors, (285372), 1235 states have call successors, (1235), 1234 states have call predecessors, (1235), 4834 states have return successors, (33670), 4078 states have call predecessors, (33670), 1234 states have call successors, (33670) [2023-04-01 21:06:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276987 states to 276987 states and 320277 transitions. [2023-04-01 21:06:03,083 INFO L78 Accepts]: Start accepts. Automaton has 276987 states and 320277 transitions. Word has length 2665 [2023-04-01 21:06:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:06:03,084 INFO L495 AbstractCegarLoop]: Abstraction has 276987 states and 320277 transitions. [2023-04-01 21:06:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 2 states have internal predecessors, (2020), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 21:06:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 276987 states and 320277 transitions. [2023-04-01 21:06:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2667 [2023-04-01 21:06:03,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:06:03,533 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, 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, 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, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:06:03,544 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 21:06:03,741 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 21:06:03,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:06:03,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:06:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1448455363, now seen corresponding path program 1 times [2023-04-01 21:06:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:06:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696137537] [2023-04-01 21:06:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:06:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:06:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:06:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:06:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:06:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-01 21:06:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2023-04-01 21:06:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2023-04-01 21:06:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 879 [2023-04-01 21:06:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 1238 proven. 368 refuted. 0 times theorem prover too weak. 1198 trivial. 0 not checked. [2023-04-01 21:06:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:06:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696137537] [2023-04-01 21:06:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696137537] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:06:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654338592] [2023-04-01 21:06:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:06:05,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:06:05,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 21:06:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:06,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:06:06,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:06:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 1808 proven. 2 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2023-04-01 21:06:06,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:06:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 1241 proven. 371 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2023-04-01 21:06:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654338592] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:06:07,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:06:07,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 21:06:07,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614663303] [2023-04-01 21:06:07,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:06:07,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 21:06:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:06:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 21:06:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:06:07,357 INFO L87 Difference]: Start difference. First operand 276987 states and 320277 transitions. Second operand has 11 states, 11 states have (on average 232.0) internal successors, (2552), 9 states have internal predecessors, (2552), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 21:06:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:06:26,742 INFO L93 Difference]: Finished difference Result 884204 states and 1038631 transitions. [2023-04-01 21:06:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 21:06:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 232.0) internal successors, (2552), 9 states have internal predecessors, (2552), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 2666 [2023-04-01 21:06:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:06:28,395 INFO L225 Difference]: With dead ends: 884204 [2023-04-01 21:06:28,396 INFO L226 Difference]: Without dead ends: 599579 [2023-04-01 21:06:28,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5384 GetRequests, 5358 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 21:06:28,800 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 15490 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 29341 mSolverCounterSat, 5248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15490 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 34589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5248 IncrementalHoareTripleChecker+Valid, 29341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:06:28,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15490 Valid, 1962 Invalid, 34589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5248 Valid, 29341 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-04-01 21:06:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599579 states. [2023-04-01 21:06:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599579 to 597112. [2023-04-01 21:06:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597112 states, 586839 states have (on average 1.0394264866513643) internal successors, (609976), 587925 states have internal predecessors, (609976), 2699 states have call successors, (2699), 2698 states have call predecessors, (2699), 7573 states have return successors, (65627), 6488 states have call predecessors, (65627), 2698 states have call successors, (65627) [2023-04-01 21:06:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597112 states to 597112 states and 678302 transitions. [2023-04-01 21:06:38,883 INFO L78 Accepts]: Start accepts. Automaton has 597112 states and 678302 transitions. Word has length 2666 [2023-04-01 21:06:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:06:38,883 INFO L495 AbstractCegarLoop]: Abstraction has 597112 states and 678302 transitions. [2023-04-01 21:06:38,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 232.0) internal successors, (2552), 9 states have internal predecessors, (2552), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 21:06:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 597112 states and 678302 transitions. [2023-04-01 21:06:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2913 [2023-04-01 21:06:39,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:06:39,882 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:06:39,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 21:06:40,092 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 21:06:40,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:06:40,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:06:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1432138345, now seen corresponding path program 1 times [2023-04-01 21:06:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:06:40,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228094263] [2023-04-01 21:06:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:40,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:06:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:06:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:06:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:06:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:06:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2023-04-01 21:06:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2023-04-01 21:06:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 970 [2023-04-01 21:06:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 21:06:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 1587 proven. 493 refuted. 0 times theorem prover too weak. 1201 trivial. 0 not checked. [2023-04-01 21:06:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:06:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228094263] [2023-04-01 21:06:49,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228094263] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:06:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884604889] [2023-04-01 21:06:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:06:49,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:06:49,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:06:49,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:06:49,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 21:06:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:06:50,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 3729 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:06:50,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:06:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 2275 proven. 5 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2023-04-01 21:06:50,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:06:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 1595 proven. 485 refuted. 0 times theorem prover too weak. 1201 trivial. 0 not checked. [2023-04-01 21:06:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884604889] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:06:51,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:06:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-04-01 21:06:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519344878] [2023-04-01 21:06:51,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:06:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 21:06:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:06:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 21:06:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:06:51,465 INFO L87 Difference]: Start difference. First operand 597112 states and 678302 transitions. Second operand has 14 states, 14 states have (on average 197.0) internal successors, (2758), 12 states have internal predecessors, (2758), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20)