/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:04:45,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:04:45,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:04:45,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:04:45,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:04:45,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:04:45,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:04:45,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:04:45,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:04:45,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:04:45,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:04:45,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:04:45,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:04:45,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:04:45,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:04:45,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:04:45,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:04:45,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:04:45,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:04:45,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:04:45,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:04:45,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:04:45,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:04:45,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:04:45,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:04:45,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:04:45,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:04:45,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:04:45,978 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 [2023-03-31 00:04:46,006 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:04:46,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:04:46,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:04:46,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:04:46,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:04:46,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:04:46,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:04:46,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:04:46,009 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:04:46,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:04:46,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:04:46,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:04:46,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:04:46,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:04:46,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:04:46,013 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:04:46,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:04:46,013 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:04:46,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:04:46,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:04:46,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:04:46,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:04:46,248 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:04:46,248 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:04:46,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2023-03-31 00:04:47,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:04:47,567 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:04:47,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2023-03-31 00:04:47,573 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0d33957/8e339f2928264f6dbfbd0b31939ab5b0/FLAG9d40c46a4 [2023-03-31 00:04:47,592 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0d33957/8e339f2928264f6dbfbd0b31939ab5b0 [2023-03-31 00:04:47,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:04:47,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:04:47,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:04:47,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:04:47,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:04:47,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b712349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47, skipping insertion in model container [2023-03-31 00:04:47,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:04:47,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:04:47,773 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_1252a.c[2154,2167] [2023-03-31 00:04:47,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:04:47,784 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:04:47,799 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_1252a.c[2154,2167] [2023-03-31 00:04:47,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:04:47,809 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:04:47,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47 WrapperNode [2023-03-31 00:04:47,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:04:47,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:04:47,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:04:47,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:04:47,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:04:47,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:04:47,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:04:47,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:04:47,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (1/1) ... [2023-03-31 00:04:47,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:04:47,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:04:47,880 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) [2023-03-31 00:04:47,895 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 [2023-03-31 00:04:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:04:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:04:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:04:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2023-03-31 00:04:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2023-03-31 00:04:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2023-03-31 00:04:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:04:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:04:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 00:04:48,019 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:04:48,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:04:48,284 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:04:48,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:04:48,290 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-03-31 00:04:48,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:04:48 BoogieIcfgContainer [2023-03-31 00:04:48,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:04:48,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:04:48,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:04:48,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:04:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:04:47" (1/3) ... [2023-03-31 00:04:48,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269bf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:04:48, skipping insertion in model container [2023-03-31 00:04:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:04:47" (2/3) ... [2023-03-31 00:04:48,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269bf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:04:48, skipping insertion in model container [2023-03-31 00:04:48,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:04:48" (3/3) ... [2023-03-31 00:04:48,313 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2023-03-31 00:04:48,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:04:48,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:04:48,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:04:48,366 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;@5ac188ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:04:48,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:04:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:04:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-31 00:04:48,374 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:04:48,374 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] [2023-03-31 00:04:48,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:04:48,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:04:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash 392766939, now seen corresponding path program 1 times [2023-03-31 00:04:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:04:48,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548683781] [2023-03-31 00:04:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:04:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:04:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:04:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:04:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:04:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:04:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:04:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548683781] [2023-03-31 00:04:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548683781] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:04:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:04:48,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:04:48,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281770835] [2023-03-31 00:04:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:04:48,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:04:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:04:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:04:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:04:48,637 INFO L87 Difference]: Start difference. First operand has 42 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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) [2023-03-31 00:04:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:04:48,833 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2023-03-31 00:04:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:04:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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 22 [2023-03-31 00:04:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:04:48,841 INFO L225 Difference]: With dead ends: 75 [2023-03-31 00:04:48,841 INFO L226 Difference]: Without dead ends: 38 [2023-03-31 00:04:48,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:04:48,848 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:04:48,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 7 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:04:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-03-31 00:04:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-03-31 00:04:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 00:04:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-03-31 00:04:48,901 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 22 [2023-03-31 00:04:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:04:48,903 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-03-31 00:04:48,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 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) [2023-03-31 00:04:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-03-31 00:04:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-03-31 00:04:48,907 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:04:48,907 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] [2023-03-31 00:04:48,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:04:48,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:04:48,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:04:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -868814391, now seen corresponding path program 1 times [2023-03-31 00:04:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:04:48,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390359503] [2023-03-31 00:04:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:04:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:04:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:04:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:04:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:04:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:04:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:04:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390359503] [2023-03-31 00:04:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390359503] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:04:49,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:04:49,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:04:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046058542] [2023-03-31 00:04:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:04:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:04:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:04:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:04:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:04:49,167 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:04:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:04:49,339 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-03-31 00:04:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:04:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-03-31 00:04:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:04:49,351 INFO L225 Difference]: With dead ends: 57 [2023-03-31 00:04:49,351 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 00:04:49,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:04:49,352 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:04:49,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:04:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 00:04:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 00:04:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-03-31 00:04:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2023-03-31 00:04:49,361 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 23 [2023-03-31 00:04:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:04:49,361 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2023-03-31 00:04:49,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:04:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2023-03-31 00:04:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:04:49,362 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:04:49,362 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] [2023-03-31 00:04:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:04:49,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:04:49,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:04:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1661035518, now seen corresponding path program 1 times [2023-03-31 00:04:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:04:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459163293] [2023-03-31 00:04:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:04:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:04:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:04:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:04:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:04:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:04:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:04:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:04:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459163293] [2023-03-31 00:04:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459163293] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:04:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:04:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:04:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402205291] [2023-03-31 00:04:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:04:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:04:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:04:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:04:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:04:49,534 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:04:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:04:49,670 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2023-03-31 00:04:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:04:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-03-31 00:04:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:04:49,672 INFO L225 Difference]: With dead ends: 61 [2023-03-31 00:04:49,672 INFO L226 Difference]: Without dead ends: 46 [2023-03-31 00:04:49,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:04:49,678 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:04:49,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:04:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-03-31 00:04:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2023-03-31 00:04:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-03-31 00:04:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2023-03-31 00:04:49,699 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 26 [2023-03-31 00:04:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:04:49,699 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2023-03-31 00:04:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:04:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2023-03-31 00:04:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:04:49,701 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:04:49,701 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] [2023-03-31 00:04:49,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:04:49,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:04:49,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:04:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 836980419, now seen corresponding path program 1 times [2023-03-31 00:04:49,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:04:49,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640022144] [2023-03-31 00:04:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:04:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:04:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:04:49,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:04:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:04:49,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:04:49,767 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:04:49,767 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:04:49,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:04:49,771 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 00:04:49,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:04:49,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:04:49 BoogieIcfgContainer [2023-03-31 00:04:49,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:04:49,806 INFO L158 Benchmark]: Toolchain (without parser) took 2210.07ms. Allocated memory is still 298.8MB. Free memory was 248.6MB in the beginning and 179.8MB in the end (delta: 68.8MB). Peak memory consumption was 69.1MB. Max. memory is 8.0GB. [2023-03-31 00:04:49,806 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:04:49,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.02ms. Allocated memory is still 298.8MB. Free memory was 248.6MB in the beginning and 237.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:04:49,806 INFO L158 Benchmark]: Boogie Preprocessor took 23.84ms. Allocated memory is still 298.8MB. Free memory was 237.6MB in the beginning and 235.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:04:49,806 INFO L158 Benchmark]: RCFGBuilder took 456.52ms. Allocated memory is still 298.8MB. Free memory was 235.6MB in the beginning and 221.7MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-03-31 00:04:49,807 INFO L158 Benchmark]: TraceAbstraction took 1512.85ms. Allocated memory is still 298.8MB. Free memory was 221.3MB in the beginning and 179.8MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-03-31 00:04:49,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.02ms. Allocated memory is still 298.8MB. Free memory was 248.6MB in the beginning and 237.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.84ms. Allocated memory is still 298.8MB. Free memory was 237.6MB in the beginning and 235.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 456.52ms. Allocated memory is still 298.8MB. Free memory was 235.6MB in the beginning and 221.7MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1512.85ms. Allocated memory is still 298.8MB. Free memory was 221.3MB in the beginning and 179.8MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. 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 - UnprovableResult [Line: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; VAL [y=0] [L83] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967306, \old(y)=0] [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306] [L26] __uint32_t msw, lsw; VAL [\old(x)=4294967306, x=4294967306] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967306, lsw=4294967297, msw=2146435073, x=4294967306] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=2146435073, x=4294967306] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967306, lsw=4294967297, msw=2146435073, x=4294967306] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=4294967306, \result=0, lsw=4294967297, msw=2146435073, x=4294967306] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967306, \old(y)=0, __fpclassify_double(x)=0, x=4294967306, y=0] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4294967306, \old(y)=0, \result=0, x=4294967306, y=0] [L83] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4294967306, y=0] [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res == 0.0 && __signbit_double(res) == 0=0, res=0, x=4294967306, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0, x=4294967306, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 405 IncrementalHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 11 mSDtfsCounter, 405 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 00:04:49,823 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...