/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:43:23,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:43:23,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:43:23,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 22:43:23,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:43:23,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:43:23,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:43:23,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:43:23,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:43:23,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:43:23,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:43:23,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:43:23,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:43:23,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:43:23,197 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:43:23,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:43:23,198 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:43:23,199 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:43:23,199 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:43:23,199 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:43:23,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:43:23,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:43:23,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:43:23,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:43:23,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:43:23,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:43:23,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:43:23,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:43:23,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:23,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:43:23,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:43:23,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:43:23,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:43:23,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:43:23,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:43:23,443 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:43:23,444 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:43:23,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-03-31 22:43:24,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:24,739 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:24,740 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2023-03-31 22:43:24,743 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ce0d272/e87ab16e45fd41708c9f65eb4577c436/FLAG9f9fbeb9a [2023-03-31 22:43:24,763 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ce0d272/e87ab16e45fd41708c9f65eb4577c436 [2023-03-31 22:43:24,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:24,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:24,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:24,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:24,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:24,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:24,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685fd56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24, skipping insertion in model container [2023-03-31 22:43:24,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:24,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:24,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:24,940 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/float-to-double2.c[380,393] [2023-03-31 22:43:24,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:24,957 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:24,980 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/float-to-double2.c[380,393] [2023-03-31 22:43:24,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:24,992 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:24,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24 WrapperNode [2023-03-31 22:43:24,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:24,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:24,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:24,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:25,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:25,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:25,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:25,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:25,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (1/1) ... [2023-03-31 22:43:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:25,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:25,065 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 22:43:25,072 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 22:43:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:25,165 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:25,167 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:25,276 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:25,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:25,288 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 22:43:25,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:25 BoogieIcfgContainer [2023-03-31 22:43:25,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:25,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:25,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:25,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:25,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:24" (1/3) ... [2023-03-31 22:43:25,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a7621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:25, skipping insertion in model container [2023-03-31 22:43:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:24" (2/3) ... [2023-03-31 22:43:25,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a7621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:25, skipping insertion in model container [2023-03-31 22:43:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:25" (3/3) ... [2023-03-31 22:43:25,297 INFO L112 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2023-03-31 22:43:25,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:25,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:25,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:25,353 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=FINITE_AUTOMATA, 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;@5a9bb14b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:25,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:43:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-03-31 22:43:25,368 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:25,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:25,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:25,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1243256800, now seen corresponding path program 1 times [2023-03-31 22:43:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:25,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85833061] [2023-03-31 22:43:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:25,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:43:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:25,470 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:43:25,471 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:43:25,472 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:43:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:43:25,477 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 22:43:25,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:43:25,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:43:25 BoogieIcfgContainer [2023-03-31 22:43:25,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:43:25,493 INFO L158 Benchmark]: Toolchain (without parser) took 726.51ms. Allocated memory is still 267.4MB. Free memory was 219.1MB in the beginning and 184.0MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-03-31 22:43:25,493 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:25,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.97ms. Allocated memory is still 267.4MB. Free memory was 219.1MB in the beginning and 208.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:25,494 INFO L158 Benchmark]: Boogie Preprocessor took 38.98ms. Allocated memory is still 267.4MB. Free memory was 208.6MB in the beginning and 207.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 22:43:25,495 INFO L158 Benchmark]: RCFGBuilder took 256.53ms. Allocated memory is still 267.4MB. Free memory was 207.6MB in the beginning and 197.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 22:43:25,495 INFO L158 Benchmark]: TraceAbstraction took 200.02ms. Allocated memory is still 267.4MB. Free memory was 196.6MB in the beginning and 184.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 22:43:25,497 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 185.6MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.97ms. Allocated memory is still 267.4MB. Free memory was 219.1MB in the beginning and 208.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.98ms. Allocated memory is still 267.4MB. Free memory was 208.6MB in the beginning and 207.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 256.53ms. Allocated memory is still 267.4MB. Free memory was 207.6MB in the beginning and 197.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 200.02ms. Allocated memory is still 267.4MB. Free memory was 196.6MB in the beginning and 184.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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: 11]: 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 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; VAL [f=55, fp=55] [L11] COND TRUE !(d == fp) VAL [f=55, fp=55] [L11] reach_error() VAL [f=55, fp=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 22:43:25,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...