/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:01:05,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:01:05,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:01:05,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:01:05,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:01:05,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:01:05,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:01:05,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:01:05,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:01:05,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:01:05,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:01:05,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:01:05,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:01:05,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:01:05,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:01:05,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:01:05,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:01:05,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:01:05,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:01:05,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:01:05,102 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 [2023-04-02 00:01:05,131 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:01:05,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:01:05,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:01:05,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:01:05,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:01:05,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:01:05,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:01:05,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:01:05,134 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:01:05,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:01:05,135 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:01:05,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:01:05,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:01:05,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:01:05,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:01:05,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:01:05,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:01:05,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:01:05,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:01:05,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:01:05,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:01:05,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:01:05,138 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:01:05,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:01:05,139 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:01:05,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:01:05,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:01:05,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:01:05,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:01:05,434 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:01:05,434 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:01:05,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label48.c [2023-04-02 00:01:06,717 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:01:07,334 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:01:07,335 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c [2023-04-02 00:01:07,398 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd29ed170/fb04b3076bfe4882882fd0459d7115e6/FLAG51155f33e [2023-04-02 00:01:07,414 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd29ed170/fb04b3076bfe4882882fd0459d7115e6 [2023-04-02 00:01:07,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:01:07,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:01:07,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:01:07,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:01:07,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:01:07,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:01:07" (1/1) ... [2023-04-02 00:01:07,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418e0089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:07, skipping insertion in model container [2023-04-02 00:01:07,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:01:07" (1/1) ... [2023-04-02 00:01:07,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:01:07,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:01:08,037 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c[8401,8414] [2023-04-02 00:01:09,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:01:09,207 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:01:09,239 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c[8401,8414] [2023-04-02 00:01:09,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:01:09,994 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:01:09,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09 WrapperNode [2023-04-02 00:01:09,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:01:09,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:01:09,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:01:09,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:01:10,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:01:10,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:01:10,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:01:10,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:01:10,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (1/1) ... [2023-04-02 00:01:10,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:01:10,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:01:10,431 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) [2023-04-02 00:01:10,579 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 [2023-04-02 00:01:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:01:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:01:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:01:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-02 00:01:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-02 00:01:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-02 00:01:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-02 00:01:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-02 00:01:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-02 00:01:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:01:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-02 00:01:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-02 00:01:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-02 00:01:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-02 00:01:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:01:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:01:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:01:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:01:10,682 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:01:10,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:01:18,028 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:01:18,054 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:01:18,055 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 00:01:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:01:18 BoogieIcfgContainer [2023-04-02 00:01:18,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:01:18,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:01:18,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:01:18,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:01:18,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:01:07" (1/3) ... [2023-04-02 00:01:18,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122c4c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:01:18, skipping insertion in model container [2023-04-02 00:01:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:01:09" (2/3) ... [2023-04-02 00:01:18,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122c4c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:01:18, skipping insertion in model container [2023-04-02 00:01:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:01:18" (3/3) ... [2023-04-02 00:01:18,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2023-04-02 00:01:18,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:01:18,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:01:18,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:01:18,170 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;@5a0033b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:01:18,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:01:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 00:01:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 00:01:18,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:18,190 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] [2023-04-02 00:01:18,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:18,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1008126672, now seen corresponding path program 1 times [2023-04-02 00:01:18,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:18,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741414508] [2023-04-02 00:01:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:18,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:18,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741414508] [2023-04-02 00:01:18,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741414508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:18,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:18,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 00:01:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727152543] [2023-04-02 00:01:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 00:01:18,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 00:01:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:01:18,887 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:01:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:30,160 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2023-04-02 00:01:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:01:30,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 00:01:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:30,201 INFO L225 Difference]: With dead ends: 5076 [2023-04-02 00:01:30,201 INFO L226 Difference]: Without dead ends: 3219 [2023-04-02 00:01:30,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:01:30,218 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 4623 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 1544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:30,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 384 Invalid, 8871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1544 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-04-02 00:01:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-04-02 00:01:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2023-04-02 00:01:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3154 states have (on average 1.592263792010146) internal successors, (5022), 3156 states have internal predecessors, (5022), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (37), 23 states have call predecessors, (37), 13 states have call successors, (37) [2023-04-02 00:01:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2023-04-02 00:01:30,387 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 71 [2023-04-02 00:01:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:30,389 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2023-04-02 00:01:30,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 00:01:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2023-04-02 00:01:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 00:01:30,398 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:30,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:01:30,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:01:30,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:30,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash 956664360, now seen corresponding path program 1 times [2023-04-02 00:01:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:30,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577076263] [2023-04-02 00:01:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577076263] [2023-04-02 00:01:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577076263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 00:01:30,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585075261] [2023-04-02 00:01:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:01:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:01:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:30,812 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:01:57,987 INFO L93 Difference]: Finished difference Result 20617 states and 33713 transitions. [2023-04-02 00:01:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 00:01:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 142 [2023-04-02 00:01:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:01:58,084 INFO L225 Difference]: With dead ends: 20617 [2023-04-02 00:01:58,084 INFO L226 Difference]: Without dead ends: 17429 [2023-04-02 00:01:58,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-04-02 00:01:58,105 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 11623 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 28037 mSolverCounterSat, 3776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11623 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 31813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3776 IncrementalHoareTripleChecker+Valid, 28037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:01:58,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11623 Valid, 1043 Invalid, 31813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3776 Valid, 28037 Invalid, 0 Unknown, 0 Unchecked, 26.2s Time] [2023-04-02 00:01:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2023-04-02 00:01:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 17373. [2023-04-02 00:01:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17373 states, 17154 states have (on average 1.3166025416812406) internal successors, (22585), 17166 states have internal predecessors, (22585), 74 states have call successors, (74), 74 states have call predecessors, (74), 144 states have return successors, (810), 132 states have call predecessors, (810), 73 states have call successors, (810) [2023-04-02 00:01:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 23469 transitions. [2023-04-02 00:01:58,563 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 23469 transitions. Word has length 142 [2023-04-02 00:01:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:01:58,565 INFO L495 AbstractCegarLoop]: Abstraction has 17373 states and 23469 transitions. [2023-04-02 00:01:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:01:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 23469 transitions. [2023-04-02 00:01:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 00:01:58,569 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:01:58,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 00:01:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:01:58,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:01:58,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:01:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -432887232, now seen corresponding path program 1 times [2023-04-02 00:01:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:01:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109924542] [2023-04-02 00:01:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:01:58,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:01:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:01:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:01:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:01:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:01:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:01:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109924542] [2023-04-02 00:01:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109924542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:01:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:01:59,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:01:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132421297] [2023-04-02 00:01:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:01:59,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:01:59,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:01:59,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:01:59,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:01:59,105 INFO L87 Difference]: Start difference. First operand 17373 states and 23469 transitions. Second operand has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:02:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:02:10,673 INFO L93 Difference]: Finished difference Result 51229 states and 72277 transitions. [2023-04-02 00:02:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:02:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 172 [2023-04-02 00:02:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:02:10,809 INFO L225 Difference]: With dead ends: 51229 [2023-04-02 00:02:10,809 INFO L226 Difference]: Without dead ends: 33862 [2023-04-02 00:02:10,859 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 [2023-04-02 00:02:10,860 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 8899 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 10631 mSolverCounterSat, 2137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8899 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 12768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2137 IncrementalHoareTripleChecker+Valid, 10631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-04-02 00:02:10,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8899 Valid, 1102 Invalid, 12768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2137 Valid, 10631 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-04-02 00:02:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2023-04-02 00:02:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 33708. [2023-04-02 00:02:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33708 states, 33057 states have (on average 1.2129352330822518) internal successors, (40096), 33128 states have internal predecessors, (40096), 140 states have call successors, (140), 140 states have call predecessors, (140), 510 states have return successors, (3490), 439 states have call predecessors, (3490), 139 states have call successors, (3490) [2023-04-02 00:02:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33708 states to 33708 states and 43726 transitions. [2023-04-02 00:02:11,892 INFO L78 Accepts]: Start accepts. Automaton has 33708 states and 43726 transitions. Word has length 172 [2023-04-02 00:02:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:02:11,893 INFO L495 AbstractCegarLoop]: Abstraction has 33708 states and 43726 transitions. [2023-04-02 00:02:11,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:02:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 33708 states and 43726 transitions. [2023-04-02 00:02:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-02 00:02:11,897 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:02:11,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:02:11,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:02:11,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:02:11,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:02:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -665722522, now seen corresponding path program 1 times [2023-04-02 00:02:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:02:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358223963] [2023-04-02 00:02:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:02:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:02:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:02:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 00:02:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 128 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 00:02:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:02:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358223963] [2023-04-02 00:02:12,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358223963] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:02:12,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755836438] [2023-04-02 00:02:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:02:12,421 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) [2023-04-02 00:02:12,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 00:02:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:12,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 00:02:12,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:02:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 00:02:12,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 00:02:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755836438] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:02:12,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 00:02:12,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-02 00:02:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298473652] [2023-04-02 00:02:12,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:02:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:02:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:02:12,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:02:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:02:12,857 INFO L87 Difference]: Start difference. First operand 33708 states and 43726 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:02:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:02:22,172 INFO L93 Difference]: Finished difference Result 101284 states and 135130 transitions. [2023-04-02 00:02:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 00:02:22,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 266 [2023-04-02 00:02:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:02:22,594 INFO L225 Difference]: With dead ends: 101284 [2023-04-02 00:02:22,594 INFO L226 Difference]: Without dead ends: 67582 [2023-04-02 00:02:22,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-02 00:02:22,658 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 7865 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 8317 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7865 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 9217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 8317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:02:22,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7865 Valid, 993 Invalid, 9217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 8317 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-02 00:02:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67582 states. [2023-04-02 00:02:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67582 to 59046. [2023-04-02 00:02:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59046 states, 57641 states have (on average 1.2045766034593433) internal successors, (69433), 57833 states have internal predecessors, (69433), 242 states have call successors, (242), 242 states have call predecessors, (242), 1162 states have return successors, (7722), 970 states have call predecessors, (7722), 241 states have call successors, (7722) [2023-04-02 00:02:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59046 states to 59046 states and 77397 transitions. [2023-04-02 00:02:24,189 INFO L78 Accepts]: Start accepts. Automaton has 59046 states and 77397 transitions. Word has length 266 [2023-04-02 00:02:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:02:24,190 INFO L495 AbstractCegarLoop]: Abstraction has 59046 states and 77397 transitions. [2023-04-02 00:02:24,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:02:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 59046 states and 77397 transitions. [2023-04-02 00:02:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-04-02 00:02:24,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:02:24,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:02:24,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 00:02:24,419 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 [2023-04-02 00:02:24,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:02:24,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:02:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash 223074203, now seen corresponding path program 1 times [2023-04-02 00:02:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:02:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116739096] [2023-04-02 00:02:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:02:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:02:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:02:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-02 00:02:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 00:02:25,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:02:25,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116739096] [2023-04-02 00:02:25,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116739096] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:02:25,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490286241] [2023-04-02 00:02:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:25,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:02:25,376 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) [2023-04-02 00:02:25,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 00:02:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:25,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:02:25,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:02:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:02:25,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:02:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:02:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490286241] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:02:26,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:02:26,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-02 00:02:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003676294] [2023-04-02 00:02:26,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:02:26,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:02:26,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:02:26,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:02:26,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:02:26,369 INFO L87 Difference]: Start difference. First operand 59046 states and 77397 transitions. Second operand has 12 states, 12 states have (on average 63.916666666666664) internal successors, (767), 10 states have internal predecessors, (767), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 00:02:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:02:45,810 INFO L93 Difference]: Finished difference Result 181438 states and 260314 transitions. [2023-04-02 00:02:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 00:02:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 63.916666666666664) internal successors, (767), 10 states have internal predecessors, (767), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 446 [2023-04-02 00:02:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:02:46,795 INFO L225 Difference]: With dead ends: 181438 [2023-04-02 00:02:46,795 INFO L226 Difference]: Without dead ends: 122398 [2023-04-02 00:02:46,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 894 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-02 00:02:46,883 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 9496 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 21115 mSolverCounterSat, 5221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9496 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 26336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5221 IncrementalHoareTripleChecker+Valid, 21115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-04-02 00:02:46,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9496 Valid, 1397 Invalid, 26336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5221 Valid, 21115 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2023-04-02 00:02:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122398 states. [2023-04-02 00:02:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122398 to 117673. [2023-04-02 00:02:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117673 states, 114214 states have (on average 1.2017528499133205) internal successors, (137257), 114799 states have internal predecessors, (137257), 476 states have call successors, (476), 476 states have call predecessors, (476), 2982 states have return successors, (27064), 2397 states have call predecessors, (27064), 475 states have call successors, (27064) [2023-04-02 00:02:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117673 states to 117673 states and 164797 transitions. [2023-04-02 00:02:50,125 INFO L78 Accepts]: Start accepts. Automaton has 117673 states and 164797 transitions. Word has length 446 [2023-04-02 00:02:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:02:50,126 INFO L495 AbstractCegarLoop]: Abstraction has 117673 states and 164797 transitions. [2023-04-02 00:02:50,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.916666666666664) internal successors, (767), 10 states have internal predecessors, (767), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 00:02:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 117673 states and 164797 transitions. [2023-04-02 00:02:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-04-02 00:02:50,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:02:50,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:02:50,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 00:02:50,362 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 [2023-04-02 00:02:50,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:02:50,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:02:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1431744524, now seen corresponding path program 1 times [2023-04-02 00:02:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:02:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080016452] [2023-04-02 00:02:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:02:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:02:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:02:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:02:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:02:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 00:02:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:02:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080016452] [2023-04-02 00:02:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080016452] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:02:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765605556] [2023-04-02 00:02:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:02:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:02:52,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:02:52,514 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) [2023-04-02 00:02:52,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 00:02:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:02:52,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 00:02:52,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:02:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 00:02:55,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:03:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 131 proven. 217 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 00:03:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765605556] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:03:01,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:03:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 11 [2023-04-02 00:03:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488943631] [2023-04-02 00:03:01,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:03:01,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 00:03:01,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:03:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 00:03:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:03:01,966 INFO L87 Difference]: Start difference. First operand 117673 states and 164797 transitions. Second operand has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 9 states have internal predecessors, (1832), 7 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 00:03:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:03:28,756 INFO L93 Difference]: Finished difference Result 433851 states and 645240 transitions. [2023-04-02 00:03:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 00:03:28,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 9 states have internal predecessors, (1832), 7 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 789 [2023-04-02 00:03:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:03:30,321 INFO L225 Difference]: With dead ends: 433851 [2023-04-02 00:03:30,321 INFO L226 Difference]: Without dead ends: 316184 [2023-04-02 00:03:30,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1632 GetRequests, 1600 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 00:03:30,581 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 32082 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 14368 mSolverCounterSat, 10626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32082 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 24994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10626 IncrementalHoareTripleChecker+Valid, 14368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-04-02 00:03:30,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32082 Valid, 1270 Invalid, 24994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10626 Valid, 14368 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2023-04-02 00:03:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316184 states. [2023-04-02 00:03:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316184 to 293427. [2023-04-02 00:03:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293427 states, 286717 states have (on average 1.1447978320085659) internal successors, (328233), 287764 states have internal predecessors, (328233), 1214 states have call successors, (1214), 1214 states have call predecessors, (1214), 5495 states have return successors, (57892), 4448 states have call predecessors, (57892), 1213 states have call successors, (57892) [2023-04-02 00:03:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293427 states to 293427 states and 387339 transitions. [2023-04-02 00:03:38,375 INFO L78 Accepts]: Start accepts. Automaton has 293427 states and 387339 transitions. Word has length 789 [2023-04-02 00:03:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:03:38,376 INFO L495 AbstractCegarLoop]: Abstraction has 293427 states and 387339 transitions. [2023-04-02 00:03:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 9 states have internal predecessors, (1832), 7 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 00:03:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 293427 states and 387339 transitions. [2023-04-02 00:03:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2023-04-02 00:03:38,421 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:03:38,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 00:03:38,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 00:03:38,628 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 [2023-04-02 00:03:38,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:03:38,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:03:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1705987385, now seen corresponding path program 1 times [2023-04-02 00:03:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:03:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725109814] [2023-04-02 00:03:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:03:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:03:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:03:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:03:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-04-02 00:03:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2023-04-02 00:03:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:03:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 288 proven. 100 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-04-02 00:03:40,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:03:40,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725109814] [2023-04-02 00:03:40,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725109814] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:03:40,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017130286] [2023-04-02 00:03:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:03:40,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:03:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:03:40,757 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) [2023-04-02 00:03:40,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 00:03:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:03:41,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 00:03:41,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:03:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 648 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 00:03:41,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:03:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 292 proven. 101 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-04-02 00:03:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017130286] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:03:41,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:03:41,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-02 00:03:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741000639] [2023-04-02 00:03:41,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:03:41,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:03:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:03:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:03:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:03:41,588 INFO L87 Difference]: Start difference. First operand 293427 states and 387339 transitions. Second operand has 12 states, 12 states have (on average 94.0) internal successors, (1128), 10 states have internal predecessors, (1128), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 00:04:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:04:11,347 INFO L93 Difference]: Finished difference Result 739511 states and 1043220 transitions. [2023-04-02 00:04:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 00:04:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 94.0) internal successors, (1128), 10 states have internal predecessors, (1128), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1004 [2023-04-02 00:04:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:04:13,686 INFO L225 Difference]: With dead ends: 739511 [2023-04-02 00:04:13,686 INFO L226 Difference]: Without dead ends: 447479 [2023-04-02 00:04:14,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2087 GetRequests, 2043 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 00:04:14,088 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 9002 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 30814 mSolverCounterSat, 5069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9006 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 35883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5069 IncrementalHoareTripleChecker+Valid, 30814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-04-02 00:04:14,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9006 Valid, 2297 Invalid, 35883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5069 Valid, 30814 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-04-02 00:04:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447479 states. [2023-04-02 00:04:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447479 to 431287. [2023-04-02 00:04:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431287 states, 420771 states have (on average 1.091493948014478) internal successors, (459269), 422560 states have internal predecessors, (459269), 1778 states have call successors, (1778), 1778 states have call predecessors, (1778), 8737 states have return successors, (74500), 6948 states have call predecessors, (74500), 1777 states have call successors, (74500) [2023-04-02 00:04:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431287 states to 431287 states and 535547 transitions. [2023-04-02 00:04:26,064 INFO L78 Accepts]: Start accepts. Automaton has 431287 states and 535547 transitions. Word has length 1004 [2023-04-02 00:04:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:04:26,066 INFO L495 AbstractCegarLoop]: Abstraction has 431287 states and 535547 transitions. [2023-04-02 00:04:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 94.0) internal successors, (1128), 10 states have internal predecessors, (1128), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 00:04:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 431287 states and 535547 transitions. [2023-04-02 00:04:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2023-04-02 00:04:26,101 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:04:26,102 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:04:26,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 00:04:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:04:26,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:04:26,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:04:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1765195990, now seen corresponding path program 1 times [2023-04-02 00:04:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:04:26,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318615101] [2023-04-02 00:04:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:04:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:04:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:04:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 00:04:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 00:04:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-02 00:04:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-02 00:04:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2023-04-02 00:04:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 934 [2023-04-02 00:04:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 327 proven. 5 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 00:04:27,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:04:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318615101] [2023-04-02 00:04:27,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318615101] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:04:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049468759] [2023-04-02 00:04:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:04:27,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:04:27,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:04:27,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:04:28,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 00:04:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:04:28,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 00:04:28,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:04:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 1065 proven. 2 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-04-02 00:04:28,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:04:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 515 proven. 176 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2023-04-02 00:04:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049468759] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:04:28,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:04:28,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-04-02 00:04:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525797422] [2023-04-02 00:04:28,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:04:28,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 00:04:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:04:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 00:04:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:04:28,916 INFO L87 Difference]: Start difference. First operand 431287 states and 535547 transitions. Second operand has 12 states, 12 states have (on average 74.16666666666667) internal successors, (890), 10 states have internal predecessors, (890), 5 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)