/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/float-newlib/double_req_bl_0931.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:45:47,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:45:47,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:45:47,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:45:47,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:45:47,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:45:47,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:45:47,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:45:47,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:45:47,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:45:47,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:45:47,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:45:47,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:45:47,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:45:47,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:45:47,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:45:47,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:45:47,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:45:47,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:45:47,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:45:47,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:45:47,368 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:45:47,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:45:47,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:45:47,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:45:47,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:45:47,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:45:47,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:45:47,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:45:47,370 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:45:47,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:45:47,370 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:45:47,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:45:47,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:45:47,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:45:47,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:45:47,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:45:47,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:45:47,373 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:45:47,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:45:47,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:45:47,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:45:47,577 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:45:47,578 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:45:47,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2023-04-02 00:45:48,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:45:48,890 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:45:48,890 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2023-04-02 00:45:48,896 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da37cac35/f87e5cc201aa4b45b6eaebea3774a971/FLAG7dbc11c94 [2023-04-02 00:45:48,908 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da37cac35/f87e5cc201aa4b45b6eaebea3774a971 [2023-04-02 00:45:48,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:45:48,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:45:48,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:45:48,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:45:48,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:45:48,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:45:48" (1/1) ... [2023-04-02 00:45:48,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73bea4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:48, skipping insertion in model container [2023-04-02 00:45:48,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:45:48" (1/1) ... [2023-04-02 00:45:48,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:45:48,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:45:49,096 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/float-newlib/double_req_bl_0931.c[3610,3623] [2023-04-02 00:45:49,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:45:49,108 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:45:49,135 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/float-newlib/double_req_bl_0931.c[3610,3623] [2023-04-02 00:45:49,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:45:49,148 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:45:49,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49 WrapperNode [2023-04-02 00:45:49,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:45:49,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:45:49,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:45:49,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:45:49,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:45:49,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:45:49,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:45:49,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:45:49,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (1/1) ... [2023-04-02 00:45:49,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:45:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:45:49,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:45:49,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:45:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:45:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:45:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:45:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2023-04-02 00:45:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2023-04-02 00:45:49,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:45:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 00:45:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:45:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:45:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:45:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:45:49,335 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:45:49,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:45:49,775 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:45:49,782 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:45:49,782 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-04-02 00:45:49,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:45:49 BoogieIcfgContainer [2023-04-02 00:45:49,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:45:49,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:45:49,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:45:49,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:45:49,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:45:48" (1/3) ... [2023-04-02 00:45:49,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3b06a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:45:49, skipping insertion in model container [2023-04-02 00:45:49,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:45:49" (2/3) ... [2023-04-02 00:45:49,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3b06a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:45:49, skipping insertion in model container [2023-04-02 00:45:49,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:45:49" (3/3) ... [2023-04-02 00:45:49,792 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0931.c [2023-04-02 00:45:49,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:45:49,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:45:49,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:45:49,854 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;@409f8400, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:45:49,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:45:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 58 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 00:45:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 00:45:49,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:49,864 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] [2023-04-02 00:45:49,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:49,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1664511499, now seen corresponding path program 1 times [2023-04-02 00:45:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:49,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020812761] [2023-04-02 00:45:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 00:45:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:50,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020812761] [2023-04-02 00:45:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020812761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:50,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:50,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:45:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165590944] [2023-04-02 00:45:50,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:50,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 00:45:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 00:45:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:45:50,190 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 58 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 00:45:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:50,509 INFO L93 Difference]: Finished difference Result 126 states and 199 transitions. [2023-04-02 00:45:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:45:50,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-04-02 00:45:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:50,522 INFO L225 Difference]: With dead ends: 126 [2023-04-02 00:45:50,546 INFO L226 Difference]: Without dead ends: 63 [2023-04-02 00:45:50,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:45:50,558 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:50,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 7 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:45:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-02 00:45:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-04-02 00:45:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:45:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2023-04-02 00:45:50,594 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 29 [2023-04-02 00:45:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:50,594 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2023-04-02 00:45:50,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 00:45:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2023-04-02 00:45:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 00:45:50,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:50,596 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] [2023-04-02 00:45:50,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:45:50,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:50,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash -967080484, now seen corresponding path program 1 times [2023-04-02 00:45:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591154753] [2023-04-02 00:45:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:50,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 00:45:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591154753] [2023-04-02 00:45:51,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591154753] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:51,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:51,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 00:45:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048901339] [2023-04-02 00:45:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 00:45:51,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 00:45:51,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:45:51,206 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:51,693 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2023-04-02 00:45:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 00:45:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 3 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 31 [2023-04-02 00:45:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:51,699 INFO L225 Difference]: With dead ends: 82 [2023-04-02 00:45:51,700 INFO L226 Difference]: Without dead ends: 72 [2023-04-02 00:45:51,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-02 00:45:51,701 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:51,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 11 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 00:45:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-04-02 00:45:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-04-02 00:45:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:45:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2023-04-02 00:45:51,727 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 31 [2023-04-02 00:45:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:51,727 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2023-04-02 00:45:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2023-04-02 00:45:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 00:45:51,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:51,730 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] [2023-04-02 00:45:51,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:45:51,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:51,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1748340235, now seen corresponding path program 1 times [2023-04-02 00:45:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:51,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808377234] [2023-04-02 00:45:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 00:45:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:52,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808377234] [2023-04-02 00:45:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808377234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 00:45:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760334804] [2023-04-02 00:45:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:52,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 00:45:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 00:45:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 00:45:52,194 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:52,813 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2023-04-02 00:45:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 00:45:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (4), 3 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 32 [2023-04-02 00:45:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:52,815 INFO L225 Difference]: With dead ends: 76 [2023-04-02 00:45:52,815 INFO L226 Difference]: Without dead ends: 66 [2023-04-02 00:45:52,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-04-02 00:45:52,816 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:52,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 15 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 00:45:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-04-02 00:45:52,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-04-02 00:45:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 57 states have internal predecessors, (84), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:45:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2023-04-02 00:45:52,827 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 32 [2023-04-02 00:45:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:52,827 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2023-04-02 00:45:52,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2023-04-02 00:45:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 00:45:52,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:52,829 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] [2023-04-02 00:45:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:45:52,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:52,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2046479069, now seen corresponding path program 1 times [2023-04-02 00:45:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512439172] [2023-04-02 00:45:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 00:45:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512439172] [2023-04-02 00:45:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512439172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:53,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:53,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 00:45:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323316041] [2023-04-02 00:45:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 00:45:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 00:45:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:45:53,118 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:53,511 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-04-02 00:45:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 00:45:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 3 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 32 [2023-04-02 00:45:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:53,512 INFO L225 Difference]: With dead ends: 72 [2023-04-02 00:45:53,512 INFO L226 Difference]: Without dead ends: 65 [2023-04-02 00:45:53,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:45:53,514 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 89 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:53,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 9 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 00:45:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-04-02 00:45:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-04-02 00:45:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 57 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:45:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-04-02 00:45:53,524 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 32 [2023-04-02 00:45:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:53,524 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-04-02 00:45:53,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-04-02 00:45:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 00:45:53,526 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:53,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:45:53,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 00:45:53,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:53,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1648244828, now seen corresponding path program 1 times [2023-04-02 00:45:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789629256] [2023-04-02 00:45:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 00:45:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789629256] [2023-04-02 00:45:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789629256] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 00:45:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392226548] [2023-04-02 00:45:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 00:45:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 00:45:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-04-02 00:45:53,947 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:54,553 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2023-04-02 00:45:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 00:45:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (4), 3 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 33 [2023-04-02 00:45:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:54,554 INFO L225 Difference]: With dead ends: 75 [2023-04-02 00:45:54,554 INFO L226 Difference]: Without dead ends: 63 [2023-04-02 00:45:54,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-04-02 00:45:54,556 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 99 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:54,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 17 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 00:45:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-02 00:45:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-04-02 00:45:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:45:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2023-04-02 00:45:54,564 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 33 [2023-04-02 00:45:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:54,564 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2023-04-02 00:45:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2023-04-02 00:45:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 00:45:54,569 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:45:54,569 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] [2023-04-02 00:45:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 00:45:54,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:45:54,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:45:54,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1784261697, now seen corresponding path program 1 times [2023-04-02 00:45:54,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:45:54,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812595940] [2023-04-02 00:45:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:45:54,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:45:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:45:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:45:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 00:45:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:45:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:45:54,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:45:54,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812595940] [2023-04-02 00:45:54,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812595940] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:45:54,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:45:54,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 00:45:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968604843] [2023-04-02 00:45:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:45:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 00:45:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:45:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 00:45:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:45:54,973 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:45:55,474 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2023-04-02 00:45:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 00:45:55,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 3 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 33 [2023-04-02 00:45:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:45:55,475 INFO L225 Difference]: With dead ends: 64 [2023-04-02 00:45:55,476 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 00:45:55,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-04-02 00:45:55,477 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 86 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 00:45:55,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 13 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 00:45:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 00:45:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 00:45:55,478 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) [2023-04-02 00:45:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 00:45:55,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2023-04-02 00:45:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:45:55,478 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 00:45:55,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 00:45:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 00:45:55,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 00:45:55,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:45:55,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 00:45:55,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 00:45:55,554 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 72) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L899 garLoopResultBuilder]: For program point L60-1(lines 47 126) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 52 57) no Hoare annotation was computed. [2023-04-02 00:45:55,555 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 52 57) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L52-3(lines 52 57) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point __ieee754_logEXIT(lines 47 126) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L61-2(line 61) no Hoare annotation was computed. [2023-04-02 00:45:55,556 INFO L899 garLoopResultBuilder]: For program point L61-4(lines 61 62) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L86(lines 86 102) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 78 83) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L111-2(line 111) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L902 garLoopResultBuilder]: At program point L78-2(lines 78 83) the Hoare annotation is: true [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L78-3(lines 78 83) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L111-4(line 111) no Hoare annotation was computed. [2023-04-02 00:45:55,557 INFO L899 garLoopResultBuilder]: For program point L87(lines 87 94) no Hoare annotation was computed. [2023-04-02 00:45:55,562 INFO L899 garLoopResultBuilder]: For program point __ieee754_logFINAL(lines 47 126) no Hoare annotation was computed. [2023-04-02 00:45:55,562 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 47 126) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,562 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 101) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L63(lines 63 64) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L121(lines 121 124) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 93) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 125) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81-2(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81-4(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81-6(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81-8(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,563 INFO L899 garLoopResultBuilder]: For program point L81-10(line 81) no Hoare annotation was computed. [2023-04-02 00:45:55,564 INFO L899 garLoopResultBuilder]: For program point L115(lines 115 119) no Hoare annotation was computed. [2023-04-02 00:45:55,564 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 67 71) no Hoare annotation was computed. [2023-04-02 00:45:55,566 INFO L902 garLoopResultBuilder]: At program point L67-2(lines 67 71) the Hoare annotation is: true [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L31-2(line 31) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L29-2(line 29) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L31-4(line 31) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L29-4(line 29) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L29-6(line 29) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L29-8(line 29) no Hoare annotation was computed. [2023-04-02 00:45:55,567 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 20 32) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,567 INFO L899 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2023-04-02 00:45:55,568 INFO L895 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,568 INFO L899 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2023-04-02 00:45:55,568 INFO L899 garLoopResultBuilder]: For program point isinf_doubleFINAL(lines 20 32) no Hoare annotation was computed. [2023-04-02 00:45:55,568 INFO L899 garLoopResultBuilder]: For program point isinf_doubleEXIT(lines 20 32) no Hoare annotation was computed. [2023-04-02 00:45:55,569 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2023-04-02 00:45:55,569 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 128 144) no Hoare annotation was computed. [2023-04-02 00:45:55,569 INFO L899 garLoopResultBuilder]: For program point L139(line 139) no Hoare annotation was computed. [2023-04-02 00:45:55,569 INFO L902 garLoopResultBuilder]: At program point L138(line 138) the Hoare annotation is: true [2023-04-02 00:45:55,570 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 128 144) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,570 INFO L899 garLoopResultBuilder]: For program point L138-1(line 138) no Hoare annotation was computed. [2023-04-02 00:45:55,570 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 128 144) no Hoare annotation was computed. [2023-04-02 00:45:55,570 INFO L899 garLoopResultBuilder]: For program point L138-2(lines 138 141) no Hoare annotation was computed. [2023-04-02 00:45:55,570 INFO L895 garLoopResultBuilder]: At program point L135(line 135) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2023-04-02 00:45:55,570 INFO L899 garLoopResultBuilder]: For program point L135-1(line 135) no Hoare annotation was computed. [2023-04-02 00:45:55,570 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 00:45:55,570 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |old(~two54_log~0)| ~two54_log~0) (= |old(~Lg3_log~0)| ~Lg3_log~0) (= |old(~Lg4_log~0)| ~Lg4_log~0) (= |old(~Lg2_log~0)| ~Lg2_log~0) (= ~Lg1_log~0 |old(~Lg1_log~0)|) (= ~ln2_lo_log~0 |old(~ln2_lo_log~0)|) (= ~Lg5_log~0 |old(~Lg5_log~0)|) (= ~ln2_hi_log~0 |old(~ln2_hi_log~0)|) (= |old(~Lg7_log~0)| ~Lg7_log~0) (= |old(~zero~0)| ~zero~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|) (= ~Lg6_log~0 |old(~Lg6_log~0)|)) [2023-04-02 00:45:55,571 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 00:45:55,571 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 00:45:55,571 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 00:45:55,571 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 00:45:55,571 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 00:45:55,574 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-04-02 00:45:55,575 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:45:55,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:45:55 BoogieIcfgContainer [2023-04-02 00:45:55,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:45:55,591 INFO L158 Benchmark]: Toolchain (without parser) took 6679.17ms. Allocated memory was 268.4MB in the beginning and 356.5MB in the end (delta: 88.1MB). Free memory was 221.0MB in the beginning and 299.6MB in the end (delta: -78.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 00:45:55,592 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 132.4MB in the beginning and 132.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:45:55,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.47ms. Allocated memory is still 268.4MB. Free memory was 221.0MB in the beginning and 208.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 00:45:55,592 INFO L158 Benchmark]: Boogie Preprocessor took 38.51ms. Allocated memory is still 268.4MB. Free memory was 208.4MB in the beginning and 206.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 00:45:55,592 INFO L158 Benchmark]: RCFGBuilder took 595.26ms. Allocated memory is still 268.4MB. Free memory was 206.3MB in the beginning and 185.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-04-02 00:45:55,592 INFO L158 Benchmark]: TraceAbstraction took 5804.29ms. Allocated memory was 268.4MB in the beginning and 356.5MB in the end (delta: 88.1MB). Free memory was 184.8MB in the beginning and 299.6MB in the end (delta: -114.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:45:55,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory was 132.4MB in the beginning and 132.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.47ms. Allocated memory is still 268.4MB. Free memory was 221.0MB in the beginning and 208.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.51ms. Allocated memory is still 268.4MB. Free memory was 208.4MB in the beginning and 206.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 595.26ms. Allocated memory is still 268.4MB. Free memory was 206.3MB in the beginning and 185.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5804.29ms. Allocated memory was 268.4MB in the beginning and 356.5MB in the end (delta: 88.1MB). Free memory was 184.8MB in the beginning and 299.6MB in the end (delta: -114.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 139]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 576 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3096 IncrementalHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 20 mSDtfsCounter, 3096 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 14 PreInvPairs, 19 NumberOfFragments, 123 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((\old(unknown-#length-unknown) == unknown-#length-unknown && \old(unknown-#memory_real-unknown) == unknown-#memory_real-unknown) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && \old(\valid) == \valid - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((\old(unknown-#length-unknown) == unknown-#length-unknown && \old(unknown-#memory_real-unknown) == unknown-#memory_real-unknown) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && \old(\valid) == \valid - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-04-02 00:45:55,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...