/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/floats-cbmc-regression/float20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:01:37,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:01:37,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:01:37,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:01:37,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:01:37,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:01:37,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:01:37,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:01:37,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:01:37,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:01:37,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:01:37,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:01:37,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:01:37,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:01:37,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:01:37,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:01:38,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:01:38,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:01:38,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:01:38,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:01:38,026 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 00:01:38,069 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:01:38,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:01:38,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:01:38,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:01:38,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:01:38,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:01:38,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:01:38,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:01:38,072 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:01:38,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:01:38,074 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:01:38,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:01:38,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:01:38,075 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:01:38,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:01:38,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:01:38,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:01:38,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:01:38,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:01:38,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:01:38,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:01:38,078 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:01:38,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:01:38,078 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:01:38,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:01:38,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:01:38,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:01:38,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:01:38,558 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:01:38,558 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:01:38,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-03-31 00:01:40,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:01:40,987 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:01:40,987 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float20.i [2023-03-31 00:01:41,014 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6389c50d7/1b27c1cad19d440ca5427198d4c8201f/FLAGe2e7c339b [2023-03-31 00:01:41,032 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6389c50d7/1b27c1cad19d440ca5427198d4c8201f [2023-03-31 00:01:41,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:01:41,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:01:41,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:01:41,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:01:41,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:01:41,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6212930d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41, skipping insertion in model container [2023-03-31 00:01:41,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:01:41,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:01:41,406 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/floats-cbmc-regression/float20.i[1032,1045] [2023-03-31 00:01:41,427 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/floats-cbmc-regression/float20.i[1306,1319] [2023-03-31 00:01:41,430 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/floats-cbmc-regression/float20.i[1464,1477] [2023-03-31 00:01:41,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:01:41,454 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:01:41,488 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/floats-cbmc-regression/float20.i[1032,1045] [2023-03-31 00:01:41,501 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/floats-cbmc-regression/float20.i[1306,1319] [2023-03-31 00:01:41,504 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/floats-cbmc-regression/float20.i[1464,1477] [2023-03-31 00:01:41,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:01:41,525 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:01:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41 WrapperNode [2023-03-31 00:01:41,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:01:41,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:01:41,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:01:41,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:01:41,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:01:41,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:01:41,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:01:41,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:01:41,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (1/1) ... [2023-03-31 00:01:41,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:01:41,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:01:41,663 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 00:01:41,717 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 00:01:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bug [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bugBrokenOut [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bugCasting [2023-03-31 00:01:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:01:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:01:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:01:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:01:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:01:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:01:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:01:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure bug [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure bugBrokenOut [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure bugCasting [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:01:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:01:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:01:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:01:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:01:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:01:41,881 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:01:41,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:01:42,144 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:01:42,149 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:01:42,149 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 00:01:42,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:01:42 BoogieIcfgContainer [2023-03-31 00:01:42,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:01:42,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:01:42,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:01:42,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:01:42,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:01:41" (1/3) ... [2023-03-31 00:01:42,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faad7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:01:42, skipping insertion in model container [2023-03-31 00:01:42,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:01:41" (2/3) ... [2023-03-31 00:01:42,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faad7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:01:42, skipping insertion in model container [2023-03-31 00:01:42,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:01:42" (3/3) ... [2023-03-31 00:01:42,176 INFO L112 eAbstractionObserver]: Analyzing ICFG float20.i [2023-03-31 00:01:42,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:01:42,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-03-31 00:01:42,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:01:42,354 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;@2fb4841b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:01:42,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-03-31 00:01:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 00:01:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 00:01:42,381 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:42,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:42,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting bugErr0ASSERT_VIOLATIONERROR_FUNCTION === [bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION, bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION, bugErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:42,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash 571243643, now seen corresponding path program 1 times [2023-03-31 00:01:42,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:42,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249499409] [2023-03-31 00:01:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:42,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:01:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:01:42,762 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 00:01:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:01:42,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249499409] [2023-03-31 00:01:42,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249499409] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:01:42,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:01:42,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:01:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072866198] [2023-03-31 00:01:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:01:42,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:01:42,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:01:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:01:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:01:42,861 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:01:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:01:43,029 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-03-31 00:01:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:01:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 00:01:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:01:43,037 INFO L225 Difference]: With dead ends: 71 [2023-03-31 00:01:43,038 INFO L226 Difference]: Without dead ends: 33 [2023-03-31 00:01:43,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:01:43,053 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:01:43,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:01:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-31 00:01:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-03-31 00:01:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 00:01:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2023-03-31 00:01:43,128 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 12 [2023-03-31 00:01:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:01:43,128 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2023-03-31 00:01:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:01:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2023-03-31 00:01:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 00:01:43,137 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:01:43,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:01:43,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:01:43,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting bugErr0ASSERT_VIOLATIONERROR_FUNCTION === [bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION, bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION, bugErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:01:43,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:01:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash 571303225, now seen corresponding path program 1 times [2023-03-31 00:01:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:01:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260796813] [2023-03-31 00:01:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:01:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:01:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:01:43,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:01:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:01:43,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:01:43,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:01:43,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location bugErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-03-31 00:01:43,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bugCastingErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-03-31 00:01:43,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bugBrokenOutErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-03-31 00:01:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:01:43,265 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 00:01:43,268 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:01:43,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:01:43 BoogieIcfgContainer [2023-03-31 00:01:43,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:01:43,319 INFO L158 Benchmark]: Toolchain (without parser) took 2260.30ms. Allocated memory is still 232.8MB. Free memory was 183.7MB in the beginning and 129.9MB in the end (delta: 53.8MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-03-31 00:01:43,320 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:01:43,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.85ms. Allocated memory is still 232.8MB. Free memory was 183.3MB in the beginning and 171.2MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 00:01:43,327 INFO L158 Benchmark]: Boogie Preprocessor took 64.06ms. Allocated memory is still 232.8MB. Free memory was 171.2MB in the beginning and 169.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:01:43,327 INFO L158 Benchmark]: RCFGBuilder took 559.17ms. Allocated memory is still 232.8MB. Free memory was 169.7MB in the beginning and 158.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:01:43,328 INFO L158 Benchmark]: TraceAbstraction took 1148.71ms. Allocated memory is still 232.8MB. Free memory was 158.2MB in the beginning and 129.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-03-31 00:01:43,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 465.85ms. Allocated memory is still 232.8MB. Free memory was 183.3MB in the beginning and 171.2MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.06ms. Allocated memory is still 232.8MB. Free memory was 171.2MB in the beginning and 169.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 559.17ms. Allocated memory is still 232.8MB. Free memory was 169.7MB in the beginning and 158.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1148.71ms. Allocated memory is still 232.8MB. Free memory was 158.2MB in the beginning and 129.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. 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: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) VAL [\old(min)=55] [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) VAL [\old(min)=55, min=55] [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; VAL [\old(min)=55, min=55] [L21] COND TRUE !(ulpdiff == 0x1p-126f) VAL [\old(min)=55, min=55] [L21] reach_error() VAL [\old(min)=55, min=55] - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:01:43,372 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...