/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/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:25:29,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:25:29,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:25:29,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:25:29,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:25:29,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:25:29,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:25:29,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:25:29,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:25:29,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:25:29,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:25:29,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:25:29,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:25:29,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:25:29,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:25:29,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:25:29,545 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:25:29,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:25:29,545 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:25:29,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:25:29,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:25:29,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:25:29,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:25:29,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:25:29,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:25:29,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:25:29,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:25:29,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:25:29,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:25:29,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:25:29,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:25:29,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:25:29,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:25:29,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:25:29,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:25:29,549 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:25:29,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:25:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:25:29,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:25:29,798 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:25:29,799 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:25:29,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label22.c [2023-04-01 22:25:30,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:25:31,277 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:25:31,278 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label22.c [2023-04-01 22:25:31,303 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d390e42e7/068cb810675544d1986ecff9ecd7eaea/FLAG0d7cbe854 [2023-04-01 22:25:31,318 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d390e42e7/068cb810675544d1986ecff9ecd7eaea [2023-04-01 22:25:31,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:25:31,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:25:31,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:25:31,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:25:31,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:25:31,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:25:31" (1/1) ... [2023-04-01 22:25:31,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10663d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:31, skipping insertion in model container [2023-04-01 22:25:31,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:25:31" (1/1) ... [2023-04-01 22:25:31,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:25:31,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:25:31,673 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/Problem12_label22.c[7880,7893] [2023-04-01 22:25:32,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:25:32,343 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:25:32,372 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/Problem12_label22.c[7880,7893] [2023-04-01 22:25:32,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:25:32,717 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:25:32,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32 WrapperNode [2023-04-01 22:25:32,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:25:32,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:25:32,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:25:32,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:25:32,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,919 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:25:32,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:25:32,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:25:32,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:25:32,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (1/1) ... [2023-04-01 22:25:32,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:25:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:32,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:25:33,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:25:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:25:33,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:25:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:25:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:25:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:25:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:25:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:25:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:25:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:25:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:25:33,162 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:25:33,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:25:36,703 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:25:36,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:25:36,723 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:25:36,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:36 BoogieIcfgContainer [2023-04-01 22:25:36,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:25:36,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:25:36,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:25:36,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:25:36,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:25:31" (1/3) ... [2023-04-01 22:25:36,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceaa7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:36, skipping insertion in model container [2023-04-01 22:25:36,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:32" (2/3) ... [2023-04-01 22:25:36,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceaa7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:36, skipping insertion in model container [2023-04-01 22:25:36,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:36" (3/3) ... [2023-04-01 22:25:36,733 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2023-04-01 22:25:36,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:25:36,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:25:36,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:25:36,828 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;@2d1636ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:25:36,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:25:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:25:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 22:25:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:36,844 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] [2023-04-01 22:25:36,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:36,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -577916795, now seen corresponding path program 1 times [2023-04-01 22:25:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528385285] [2023-04-01 22:25:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528385285] [2023-04-01 22:25:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528385285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:25:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370478136] [2023-04-01 22:25:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:37,490 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-04-01 22:25:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:42,829 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:25:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:25:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 70 [2023-04-01 22:25:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:42,850 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:25:42,851 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:25:42,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:25:42,861 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3332 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 2077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2077 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:42,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 33 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2077 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 22:25:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:25:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:25:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.856115107913669) internal successors, (2838), 1530 states have internal predecessors, (2838), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:25:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions. [2023-04-01 22:25:42,984 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 70 [2023-04-01 22:25:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:42,984 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions. [2023-04-01 22:25:42,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-04-01 22:25:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions. [2023-04-01 22:25:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 22:25:42,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:42,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:25:42,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:42,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1903376059, now seen corresponding path program 1 times [2023-04-01 22:25:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466125909] [2023-04-01 22:25:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:43,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:43,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466125909] [2023-04-01 22:25:43,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466125909] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:43,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:25:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660031485] [2023-04-01 22:25:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:43,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:25:43,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:25:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:25:43,409 INFO L87 Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand has 7 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-04-01 22:25:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:48,966 INFO L93 Difference]: Finished difference Result 4763 states and 8802 transitions. [2023-04-01 22:25:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:25:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 147 [2023-04-01 22:25:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:48,983 INFO L225 Difference]: With dead ends: 4763 [2023-04-01 22:25:48,983 INFO L226 Difference]: Without dead ends: 3216 [2023-04-01 22:25:48,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:48,987 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3154 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:48,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 115 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 22:25:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-04-01 22:25:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3139. [2023-04-01 22:25:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3080 states have (on average 1.6376623376623376) internal successors, (5044), 3086 states have internal predecessors, (5044), 18 states have call successors, (18), 18 states have call predecessors, (18), 40 states have return successors, (85), 34 states have call predecessors, (85), 17 states have call successors, (85) [2023-04-01 22:25:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5147 transitions. [2023-04-01 22:25:49,097 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5147 transitions. Word has length 147 [2023-04-01 22:25:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:49,099 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5147 transitions. [2023-04-01 22:25:49,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-04-01 22:25:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5147 transitions. [2023-04-01 22:25:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 22:25:49,104 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:49,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:49,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:25:49,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:49,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash -869678320, now seen corresponding path program 1 times [2023-04-01 22:25:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541928373] [2023-04-01 22:25:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541928373] [2023-04-01 22:25:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541928373] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:49,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:49,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:25:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782311106] [2023-04-01 22:25:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:25:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:25:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:25:49,458 INFO L87 Difference]: Start difference. First operand 3139 states and 5147 transitions. Second operand has 7 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-04-01 22:25:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:54,631 INFO L93 Difference]: Finished difference Result 9827 states and 16306 transitions. [2023-04-01 22:25:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:25:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 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 160 [2023-04-01 22:25:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:54,658 INFO L225 Difference]: With dead ends: 9827 [2023-04-01 22:25:54,658 INFO L226 Difference]: Without dead ends: 6694 [2023-04-01 22:25:54,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:54,666 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5425 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5425 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 5749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:54,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5425 Valid, 139 Invalid, 5749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 22:25:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2023-04-01 22:25:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6473. [2023-04-01 22:25:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6473 states, 6282 states have (on average 1.4186564788283986) internal successors, (8912), 6322 states have internal predecessors, (8912), 34 states have call successors, (34), 34 states have call predecessors, (34), 156 states have return successors, (437), 116 states have call predecessors, (437), 33 states have call successors, (437) [2023-04-01 22:25:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9383 transitions. [2023-04-01 22:25:54,858 INFO L78 Accepts]: Start accepts. Automaton has 6473 states and 9383 transitions. Word has length 160 [2023-04-01 22:25:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:54,859 INFO L495 AbstractCegarLoop]: Abstraction has 6473 states and 9383 transitions. [2023-04-01 22:25:54,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-04-01 22:25:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6473 states and 9383 transitions. [2023-04-01 22:25:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 22:25:54,862 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:54,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:25:54,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:54,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1984751572, now seen corresponding path program 1 times [2023-04-01 22:25:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133684636] [2023-04-01 22:25:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133684636] [2023-04-01 22:25:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133684636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:25:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134242902] [2023-04-01 22:25:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:25:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:25:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:55,238 INFO L87 Difference]: Start difference. First operand 6473 states and 9383 transitions. Second operand has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 5 states have internal predecessors, (188), 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) [2023-04-01 22:26:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:01,561 INFO L93 Difference]: Finished difference Result 26175 states and 40156 transitions. [2023-04-01 22:26:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:26:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 5 states have internal predecessors, (188), 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 194 [2023-04-01 22:26:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:01,642 INFO L225 Difference]: With dead ends: 26175 [2023-04-01 22:26:01,643 INFO L226 Difference]: Without dead ends: 19708 [2023-04-01 22:26:01,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:01,664 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 9413 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 2469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9413 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2469 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:01,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9413 Valid, 134 Invalid, 7823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2469 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:26:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19708 states. [2023-04-01 22:26:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19708 to 18774. [2023-04-01 22:26:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18774 states, 18159 states have (on average 1.2937386419957047) internal successors, (23493), 18315 states have internal predecessors, (23493), 94 states have call successors, (94), 94 states have call predecessors, (94), 520 states have return successors, (2642), 364 states have call predecessors, (2642), 93 states have call successors, (2642) [2023-04-01 22:26:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18774 states to 18774 states and 26229 transitions. [2023-04-01 22:26:02,170 INFO L78 Accepts]: Start accepts. Automaton has 18774 states and 26229 transitions. Word has length 194 [2023-04-01 22:26:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:02,172 INFO L495 AbstractCegarLoop]: Abstraction has 18774 states and 26229 transitions. [2023-04-01 22:26:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 5 states have internal predecessors, (188), 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) [2023-04-01 22:26:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 18774 states and 26229 transitions. [2023-04-01 22:26:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-04-01 22:26:02,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:02,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:26:02,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:02,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1240952717, now seen corresponding path program 1 times [2023-04-01 22:26:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760259205] [2023-04-01 22:26:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:26:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760259205] [2023-04-01 22:26:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760259205] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:02,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153521423] [2023-04-01 22:26:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:02,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:02,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:02,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:02,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:26:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:02,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:02,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153521423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:26:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382271475] [2023-04-01 22:26:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:02,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:26:02,998 INFO L87 Difference]: Start difference. First operand 18774 states and 26229 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:26:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:06,447 INFO L93 Difference]: Finished difference Result 55544 states and 80629 transitions. [2023-04-01 22:26:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 215 [2023-04-01 22:26:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:06,634 INFO L225 Difference]: With dead ends: 55544 [2023-04-01 22:26:06,634 INFO L226 Difference]: Without dead ends: 36776 [2023-04-01 22:26:06,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:26:06,682 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 728 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:06,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 663 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:26:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36776 states. [2023-04-01 22:26:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36776 to 33671. [2023-04-01 22:26:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33671 states, 32777 states have (on average 1.2328462031302438) internal successors, (40409), 32990 states have internal predecessors, (40409), 170 states have call successors, (170), 170 states have call predecessors, (170), 723 states have return successors, (5574), 510 states have call predecessors, (5574), 169 states have call successors, (5574) [2023-04-01 22:26:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33671 states to 33671 states and 46153 transitions. [2023-04-01 22:26:07,543 INFO L78 Accepts]: Start accepts. Automaton has 33671 states and 46153 transitions. Word has length 215 [2023-04-01 22:26:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:07,544 INFO L495 AbstractCegarLoop]: Abstraction has 33671 states and 46153 transitions. [2023-04-01 22:26:07,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:26:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 33671 states and 46153 transitions. [2023-04-01 22:26:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-04-01 22:26:07,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:07,550 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, 2, 2, 2, 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] [2023-04-01 22:26:07,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:26:07,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:07,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:07,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 416220542, now seen corresponding path program 1 times [2023-04-01 22:26:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558565737] [2023-04-01 22:26:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:26:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:26:08,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558565737] [2023-04-01 22:26:08,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558565737] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495813046] [2023-04-01 22:26:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:08,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:08,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:08,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:26:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:08,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:08,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495813046] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:08,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:26:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702882932] [2023-04-01 22:26:08,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:26:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:26:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:26:08,980 INFO L87 Difference]: Start difference. First operand 33671 states and 46153 transitions. Second operand has 12 states, 12 states have (on average 39.833333333333336) internal successors, (478), 10 states have internal predecessors, (478), 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) [2023-04-01 22:26:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:18,627 INFO L93 Difference]: Finished difference Result 88049 states and 124843 transitions. [2023-04-01 22:26:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:26:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 39.833333333333336) internal successors, (478), 10 states have internal predecessors, (478), 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 305 [2023-04-01 22:26:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:18,830 INFO L225 Difference]: With dead ends: 88049 [2023-04-01 22:26:18,830 INFO L226 Difference]: Without dead ends: 54384 [2023-04-01 22:26:18,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 612 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:26:18,890 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 4018 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 14390 mSolverCounterSat, 1925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 16315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1925 IncrementalHoareTripleChecker+Valid, 14390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:18,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4018 Valid, 256 Invalid, 16315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1925 Valid, 14390 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 22:26:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54384 states. [2023-04-01 22:26:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54384 to 52721. [2023-04-01 22:26:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52721 states, 51095 states have (on average 1.189881593110872) internal successors, (60797), 51543 states have internal predecessors, (60797), 262 states have call successors, (262), 262 states have call predecessors, (262), 1363 states have return successors, (10481), 915 states have call predecessors, (10481), 261 states have call successors, (10481) [2023-04-01 22:26:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52721 states to 52721 states and 71540 transitions. [2023-04-01 22:26:20,076 INFO L78 Accepts]: Start accepts. Automaton has 52721 states and 71540 transitions. Word has length 305 [2023-04-01 22:26:20,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:20,076 INFO L495 AbstractCegarLoop]: Abstraction has 52721 states and 71540 transitions. [2023-04-01 22:26:20,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.833333333333336) internal successors, (478), 10 states have internal predecessors, (478), 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) [2023-04-01 22:26:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 52721 states and 71540 transitions. [2023-04-01 22:26:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-04-01 22:26:20,082 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:20,082 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, 2, 2, 2, 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] [2023-04-01 22:26:20,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:20,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:26:20,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:20,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1395096138, now seen corresponding path program 1 times [2023-04-01 22:26:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415951338] [2023-04-01 22:26:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:26:20,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415951338] [2023-04-01 22:26:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415951338] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320323914] [2023-04-01 22:26:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:20,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:20,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:26:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:21,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:21,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:26:21,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:21,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320323914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:21,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:21,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:26:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647249033] [2023-04-01 22:26:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:21,163 INFO L87 Difference]: Start difference. First operand 52721 states and 71540 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:24,732 INFO L93 Difference]: Finished difference Result 130606 states and 185782 transitions. [2023-04-01 22:26:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:24,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 309 [2023-04-01 22:26:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:25,117 INFO L225 Difference]: With dead ends: 130606 [2023-04-01 22:26:25,117 INFO L226 Difference]: Without dead ends: 77891 [2023-04-01 22:26:25,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:25,191 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 743 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:25,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 610 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:26:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77891 states. [2023-04-01 22:26:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77891 to 77118. [2023-04-01 22:26:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77118 states, 74998 states have (on average 1.1870449878663432) internal successors, (89026), 75564 states have internal predecessors, (89026), 386 states have call successors, (386), 386 states have call predecessors, (386), 1733 states have return successors, (18797), 1167 states have call predecessors, (18797), 385 states have call successors, (18797) [2023-04-01 22:26:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77118 states to 77118 states and 108209 transitions. [2023-04-01 22:26:27,499 INFO L78 Accepts]: Start accepts. Automaton has 77118 states and 108209 transitions. Word has length 309 [2023-04-01 22:26:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:27,500 INFO L495 AbstractCegarLoop]: Abstraction has 77118 states and 108209 transitions. [2023-04-01 22:26:27,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 77118 states and 108209 transitions. [2023-04-01 22:26:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-04-01 22:26:27,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:27,506 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:26:27,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:27,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:27,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:27,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash 173969376, now seen corresponding path program 1 times [2023-04-01 22:26:27,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:27,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362845027] [2023-04-01 22:26:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:27,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:28,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:26:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:28,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362845027] [2023-04-01 22:26:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362845027] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936997572] [2023-04-01 22:26:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:28,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:28,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:28,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:26:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:28,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:28,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:28,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:26:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936997572] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:28,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:28,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:26:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351812112] [2023-04-01 22:26:28,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:26:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:26:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:28,729 INFO L87 Difference]: Start difference. First operand 77118 states and 108209 transitions. Second operand has 11 states, 11 states have (on average 44.63636363636363) internal successors, (491), 9 states have internal predecessors, (491), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:26:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:38,933 INFO L93 Difference]: Finished difference Result 222051 states and 343541 transitions. [2023-04-01 22:26:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:26:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 44.63636363636363) internal successors, (491), 9 states have internal predecessors, (491), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 313 [2023-04-01 22:26:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:39,606 INFO L225 Difference]: With dead ends: 222051 [2023-04-01 22:26:39,606 INFO L226 Difference]: Without dead ends: 144939 [2023-04-01 22:26:39,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 631 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:26:39,727 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 3800 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 13831 mSolverCounterSat, 1808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 15639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1808 IncrementalHoareTripleChecker+Valid, 13831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:39,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3807 Valid, 258 Invalid, 15639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1808 Valid, 13831 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 22:26:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144939 states. [2023-04-01 22:26:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144939 to 140801. [2023-04-01 22:26:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140801 states, 137415 states have (on average 1.1460975875996071) internal successors, (157491), 138280 states have internal predecessors, (157491), 711 states have call successors, (711), 710 states have call predecessors, (711), 2674 states have return successors, (31874), 1810 states have call predecessors, (31874), 710 states have call successors, (31874) [2023-04-01 22:26:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140801 states to 140801 states and 190076 transitions. [2023-04-01 22:26:43,217 INFO L78 Accepts]: Start accepts. Automaton has 140801 states and 190076 transitions. Word has length 313 [2023-04-01 22:26:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:43,217 INFO L495 AbstractCegarLoop]: Abstraction has 140801 states and 190076 transitions. [2023-04-01 22:26:43,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.63636363636363) internal successors, (491), 9 states have internal predecessors, (491), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:26:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 140801 states and 190076 transitions. [2023-04-01 22:26:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-04-01 22:26:43,241 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:43,242 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:43,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:43,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:43,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:43,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1251421604, now seen corresponding path program 1 times [2023-04-01 22:26:43,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:43,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414005827] [2023-04-01 22:26:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:43,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:26:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-04-01 22:26:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414005827] [2023-04-01 22:26:44,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414005827] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:44,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192927252] [2023-04-01 22:26:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:44,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:44,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:26:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:44,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:44,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-04-01 22:26:44,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192927252] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:26:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340087901] [2023-04-01 22:26:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:44,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:44,341 INFO L87 Difference]: Start difference. First operand 140801 states and 190076 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:48,319 INFO L93 Difference]: Finished difference Result 281592 states and 380618 transitions. [2023-04-01 22:26:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 432 [2023-04-01 22:26:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:48,885 INFO L225 Difference]: With dead ends: 281592 [2023-04-01 22:26:48,885 INFO L226 Difference]: Without dead ends: 140801 [2023-04-01 22:26:48,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:26:48,995 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 719 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:48,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1424 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:26:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140801 states. [2023-04-01 22:26:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140801 to 140801. [2023-04-01 22:26:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140801 states, 137415 states have (on average 1.1222865043845287) internal successors, (154219), 138280 states have internal predecessors, (154219), 711 states have call successors, (711), 710 states have call predecessors, (711), 2674 states have return successors, (27430), 1810 states have call predecessors, (27430), 710 states have call successors, (27430) [2023-04-01 22:26:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140801 states to 140801 states and 182360 transitions. [2023-04-01 22:26:51,764 INFO L78 Accepts]: Start accepts. Automaton has 140801 states and 182360 transitions. Word has length 432 [2023-04-01 22:26:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:51,765 INFO L495 AbstractCegarLoop]: Abstraction has 140801 states and 182360 transitions. [2023-04-01 22:26:51,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 140801 states and 182360 transitions. [2023-04-01 22:26:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-04-01 22:26:51,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:51,793 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:51,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:52,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:52,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1736154685, now seen corresponding path program 1 times [2023-04-01 22:26:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19002614] [2023-04-01 22:26:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:26:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:26:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19002614] [2023-04-01 22:26:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19002614] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43979923] [2023-04-01 22:26:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:52,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:52,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:52,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:26:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:52,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:52,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:26:52,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:52,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43979923] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:52,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:52,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:26:52,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470537549] [2023-04-01 22:26:52,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:52,909 INFO L87 Difference]: Start difference. First operand 140801 states and 182360 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:57,083 INFO L93 Difference]: Finished difference Result 297685 states and 390910 transitions. [2023-04-01 22:26:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 455 [2023-04-01 22:26:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:57,742 INFO L225 Difference]: With dead ends: 297685 [2023-04-01 22:26:57,743 INFO L226 Difference]: Without dead ends: 156894 [2023-04-01 22:26:57,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:26:57,870 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 820 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:57,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1187 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:26:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156894 states. [2023-04-01 22:27:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156894 to 156875. [2023-04-01 22:27:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156875 states, 153333 states have (on average 1.114750249457064) internal successors, (170928), 154195 states have internal predecessors, (170928), 795 states have call successors, (795), 794 states have call predecessors, (795), 2746 states have return successors, (28743), 1885 states have call predecessors, (28743), 794 states have call successors, (28743) [2023-04-01 22:27:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156875 states to 156875 states and 200466 transitions. [2023-04-01 22:27:00,885 INFO L78 Accepts]: Start accepts. Automaton has 156875 states and 200466 transitions. Word has length 455 [2023-04-01 22:27:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 156875 states and 200466 transitions. [2023-04-01 22:27:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 156875 states and 200466 transitions. [2023-04-01 22:27:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-04-01 22:27:00,912 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:00,913 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:00,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:01,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:01,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:01,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1297880960, now seen corresponding path program 1 times [2023-04-01 22:27:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:01,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246563049] [2023-04-01 22:27:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:27:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 409 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:27:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246563049] [2023-04-01 22:27:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246563049] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938052859] [2023-04-01 22:27:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:01,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:01,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:01,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:27:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:02,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:02,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:02,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:27:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938052859] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:03,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:27:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461228181] [2023-04-01 22:27:03,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:27:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:27:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:03,003 INFO L87 Difference]: Start difference. First operand 156875 states and 200466 transitions. Second operand has 11 states, 11 states have (on average 77.63636363636364) internal successors, (854), 9 states have internal predecessors, (854), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:27:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:13,823 INFO L93 Difference]: Finished difference Result 334218 states and 439131 transitions. [2023-04-01 22:27:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:27:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 77.63636363636364) internal successors, (854), 9 states have internal predecessors, (854), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 506 [2023-04-01 22:27:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:14,532 INFO L225 Difference]: With dead ends: 334218 [2023-04-01 22:27:14,532 INFO L226 Difference]: Without dead ends: 194260 [2023-04-01 22:27:14,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1023 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:27:14,696 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 4926 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 12182 mSolverCounterSat, 2121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 14303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2121 IncrementalHoareTripleChecker+Valid, 12182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:14,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 233 Invalid, 14303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2121 Valid, 12182 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-01 22:27:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194260 states. [2023-04-01 22:27:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194260 to 189432. [2023-04-01 22:27:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189432 states, 185212 states have (on average 1.0798166425501587) internal successors, (199995), 186164 states have internal predecessors, (199995), 1109 states have call successors, (1109), 958 states have call predecessors, (1109), 3110 states have return successors, (31777), 2309 states have call predecessors, (31777), 1108 states have call successors, (31777) [2023-04-01 22:27:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189432 states to 189432 states and 232881 transitions. [2023-04-01 22:27:18,287 INFO L78 Accepts]: Start accepts. Automaton has 189432 states and 232881 transitions. Word has length 506 [2023-04-01 22:27:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:18,288 INFO L495 AbstractCegarLoop]: Abstraction has 189432 states and 232881 transitions. [2023-04-01 22:27:18,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.63636363636364) internal successors, (854), 9 states have internal predecessors, (854), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:27:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 189432 states and 232881 transitions. [2023-04-01 22:27:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-04-01 22:27:18,350 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:18,350 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:18,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:18,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:18,557 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:18,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash -353987376, now seen corresponding path program 1 times [2023-04-01 22:27:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154588036] [2023-04-01 22:27:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:27:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:27:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:27:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154588036] [2023-04-01 22:27:19,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154588036] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822739556] [2023-04-01 22:27:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:19,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:19,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:27:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:19,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:27:19,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 22:27:20,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822739556] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:20,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:20,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 22:27:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160408820] [2023-04-01 22:27:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:20,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:27:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:27:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:27:20,146 INFO L87 Difference]: Start difference. First operand 189432 states and 232881 transitions. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-04-01 22:27:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:25,875 INFO L93 Difference]: Finished difference Result 377695 states and 455891 transitions. [2023-04-01 22:27:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:27:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 4 states have internal predecessors, (364), 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 610 [2023-04-01 22:27:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:26,373 INFO L225 Difference]: With dead ends: 377695 [2023-04-01 22:27:26,373 INFO L226 Difference]: Without dead ends: 189036 [2023-04-01 22:27:26,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:27:26,736 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2076 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:26,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 157 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:27:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189036 states. [2023-04-01 22:27:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189036 to 188947. [2023-04-01 22:27:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188947 states, 184830 states have (on average 1.0738516474598279) internal successors, (198480), 185807 states have internal predecessors, (198480), 958 states have call successors, (958), 958 states have call predecessors, (958), 3158 states have return successors, (23350), 2181 states have call predecessors, (23350), 957 states have call successors, (23350) [2023-04-01 22:27:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188947 states to 188947 states and 222788 transitions. [2023-04-01 22:27:30,443 INFO L78 Accepts]: Start accepts. Automaton has 188947 states and 222788 transitions. Word has length 610 [2023-04-01 22:27:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:30,443 INFO L495 AbstractCegarLoop]: Abstraction has 188947 states and 222788 transitions. [2023-04-01 22:27:30,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-04-01 22:27:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 188947 states and 222788 transitions. [2023-04-01 22:27:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-04-01 22:27:30,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:30,491 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:30,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:27:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:27:30,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:30,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1820801373, now seen corresponding path program 1 times [2023-04-01 22:27:30,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:30,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008088914] [2023-04-01 22:27:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:27:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:27:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-04-01 22:27:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 462 proven. 113 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-01 22:27:31,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:31,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008088914] [2023-04-01 22:27:31,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008088914] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:31,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593750740] [2023-04-01 22:27:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:31,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:31,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:31,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:31,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:27:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:32,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:32,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 744 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-04-01 22:27:32,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 464 proven. 114 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-04-01 22:27:32,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593750740] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:32,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:32,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:27:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739117545] [2023-04-01 22:27:32,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:32,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:27:32,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:27:32,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:27:32,808 INFO L87 Difference]: Start difference. First operand 188947 states and 222788 transitions. Second operand has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 9 states have internal predecessors, (776), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:27:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:46,830 INFO L93 Difference]: Finished difference Result 417012 states and 493508 transitions. [2023-04-01 22:27:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 22:27:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 9 states have internal predecessors, (776), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 640 [2023-04-01 22:27:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:47,617 INFO L225 Difference]: With dead ends: 417012 [2023-04-01 22:27:47,618 INFO L226 Difference]: Without dead ends: 228838 [2023-04-01 22:27:47,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1365 GetRequests, 1319 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2023-04-01 22:27:47,775 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 5261 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 16229 mSolverCounterSat, 2799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5270 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 19028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2799 IncrementalHoareTripleChecker+Valid, 16229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:47,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5270 Valid, 551 Invalid, 19028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2799 Valid, 16229 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-04-01 22:27:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228838 states. [2023-04-01 22:27:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228838 to 217139. [2023-04-01 22:27:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217139 states, 212500 states have (on average 1.0479294117647058) internal successors, (222685), 213599 states have internal predecessors, (222685), 1102 states have call successors, (1102), 1102 states have call predecessors, (1102), 3536 states have return successors, (18639), 2437 states have call predecessors, (18639), 1101 states have call successors, (18639) [2023-04-01 22:27:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217139 states to 217139 states and 242426 transitions. [2023-04-01 22:27:51,614 INFO L78 Accepts]: Start accepts. Automaton has 217139 states and 242426 transitions. Word has length 640 [2023-04-01 22:27:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:51,615 INFO L495 AbstractCegarLoop]: Abstraction has 217139 states and 242426 transitions. [2023-04-01 22:27:51,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 9 states have internal predecessors, (776), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:27:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 217139 states and 242426 transitions. [2023-04-01 22:27:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-04-01 22:27:51,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:51,643 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:51,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:27:51,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:51,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash 228739452, now seen corresponding path program 1 times [2023-04-01 22:27:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:51,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626207066] [2023-04-01 22:27:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:27:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:27:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2023-04-01 22:27:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 471 proven. 105 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-04-01 22:27:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626207066] [2023-04-01 22:27:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626207066] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932186020] [2023-04-01 22:27:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:52,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:52,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:52,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:52,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:27:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:52,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:52,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 773 proven. 2 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-04-01 22:27:52,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 473 proven. 106 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-04-01 22:27:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932186020] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:53,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-04-01 22:27:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618615720] [2023-04-01 22:27:53,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:53,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 22:27:53,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 22:27:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:27:53,273 INFO L87 Difference]: Start difference. First operand 217139 states and 242426 transitions. Second operand has 9 states, 9 states have (on average 82.22222222222223) internal successors, (740), 7 states have internal predecessors, (740), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:28:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:02,047 INFO L93 Difference]: Finished difference Result 474735 states and 534067 transitions. [2023-04-01 22:28:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:28:02,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.22222222222223) internal successors, (740), 7 states have internal predecessors, (740), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 657 [2023-04-01 22:28:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:02,774 INFO L225 Difference]: With dead ends: 474735 [2023-04-01 22:28:02,774 INFO L226 Difference]: Without dead ends: 259138 [2023-04-01 22:28:03,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1323 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:28:03,093 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 4759 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 7740 mSolverCounterSat, 1409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 9149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1409 IncrementalHoareTripleChecker+Valid, 7740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:03,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4760 Valid, 123 Invalid, 9149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1409 Valid, 7740 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 22:28:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259138 states. [2023-04-01 22:28:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259138 to 253495. [2023-04-01 22:28:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253495 states, 248355 states have (on average 1.0435022447705904) internal successors, (259159), 249522 states have internal predecessors, (259159), 1290 states have call successors, (1290), 1290 states have call predecessors, (1290), 3849 states have return successors, (20555), 2682 states have call predecessors, (20555), 1289 states have call successors, (20555) [2023-04-01 22:28:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253495 states to 253495 states and 281004 transitions. [2023-04-01 22:28:07,361 INFO L78 Accepts]: Start accepts. Automaton has 253495 states and 281004 transitions. Word has length 657 [2023-04-01 22:28:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:07,361 INFO L495 AbstractCegarLoop]: Abstraction has 253495 states and 281004 transitions. [2023-04-01 22:28:07,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.22222222222223) internal successors, (740), 7 states have internal predecessors, (740), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:28:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 253495 states and 281004 transitions. [2023-04-01 22:28:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-04-01 22:28:07,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:07,714 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:07,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:28:07,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:28:07,922 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:07,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -796761878, now seen corresponding path program 1 times [2023-04-01 22:28:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483048936] [2023-04-01 22:28:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:28:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:28:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2023-04-01 22:28:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 264 proven. 496 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-01 22:28:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:09,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483048936] [2023-04-01 22:28:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483048936] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:09,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309576520] [2023-04-01 22:28:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:09,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:09,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:09,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:09,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:28:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:09,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:28:09,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 643 proven. 2 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 22:28:10,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:28:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 333 proven. 294 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-04-01 22:28:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309576520] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:28:12,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:28:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 5] total 21 [2023-04-01 22:28:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955249210] [2023-04-01 22:28:12,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:28:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:28:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:28:12,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:28:12,592 INFO L87 Difference]: Start difference. First operand 253495 states and 281004 transitions. Second operand has 21 states, 21 states have (on average 48.476190476190474) internal successors, (1018), 19 states have internal predecessors, (1018), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:28:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:36,519 INFO L93 Difference]: Finished difference Result 540326 states and 602003 transitions. [2023-04-01 22:28:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-04-01 22:28:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 48.476190476190474) internal successors, (1018), 19 states have internal predecessors, (1018), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 685 [2023-04-01 22:28:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:37,269 INFO L225 Difference]: With dead ends: 540326 [2023-04-01 22:28:37,269 INFO L226 Difference]: Without dead ends: 277177 [2023-04-01 22:28:37,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1476 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7417 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3133, Invalid=16327, Unknown=0, NotChecked=0, Total=19460 [2023-04-01 22:28:37,626 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 17536 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 19732 mSolverCounterSat, 4065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17549 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 23797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4065 IncrementalHoareTripleChecker+Valid, 19732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:37,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17549 Valid, 1113 Invalid, 23797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4065 Valid, 19732 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2023-04-01 22:28:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277177 states. [2023-04-01 22:28:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277177 to 254907. [2023-04-01 22:28:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254907 states, 250091 states have (on average 1.0336117653174244) internal successors, (258497), 251103 states have internal predecessors, (258497), 1302 states have call successors, (1302), 1302 states have call predecessors, (1302), 3513 states have return successors, (17892), 2501 states have call predecessors, (17892), 1301 states have call successors, (17892) [2023-04-01 22:28:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254907 states to 254907 states and 277691 transitions. [2023-04-01 22:28:43,481 INFO L78 Accepts]: Start accepts. Automaton has 254907 states and 277691 transitions. Word has length 685 [2023-04-01 22:28:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:43,482 INFO L495 AbstractCegarLoop]: Abstraction has 254907 states and 277691 transitions. [2023-04-01 22:28:43,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 48.476190476190474) internal successors, (1018), 19 states have internal predecessors, (1018), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:28:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 254907 states and 277691 transitions. [2023-04-01 22:28:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-04-01 22:28:43,844 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:28:43,845 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:28:43,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-01 22:28:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 22:28:44,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:28:44,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:28:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash 234194705, now seen corresponding path program 1 times [2023-04-01 22:28:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:28:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725314502] [2023-04-01 22:28:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:28:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:28:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:28:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:28:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:28:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2023-04-01 22:28:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 257 proven. 4 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-04-01 22:28:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:28:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725314502] [2023-04-01 22:28:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725314502] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:28:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429865650] [2023-04-01 22:28:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:28:45,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:28:45,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:28:45,217 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:28:45,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:28:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:28:45,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:28:45,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:28:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-04-01 22:28:45,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:28:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429865650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:28:45,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:28:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:28:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134869929] [2023-04-01 22:28:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:28:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:28:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:28:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:28:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:28:45,575 INFO L87 Difference]: Start difference. First operand 254907 states and 277691 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:28:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:28:50,891 INFO L93 Difference]: Finished difference Result 534813 states and 585336 transitions. [2023-04-01 22:28:50,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:28:50,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 732 [2023-04-01 22:28:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:28:50,894 INFO L225 Difference]: With dead ends: 534813 [2023-04-01 22:28:50,894 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:28:51,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:28:51,345 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 778 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:28:51,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 444 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:28:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:28:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:28:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:28:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:28:51,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 732 [2023-04-01 22:28:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:28:51,348 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:28:51,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:28:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:28:51,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:28:51,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:28:51,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-04-01 22:28:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 22:28:51,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.