/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 OctagonDomain -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:46:19,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:46:19,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:46:19,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 04:46:19,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:46:19,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:46:19,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:46:19,905 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 [2023-04-01 04:46:19,923 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:46:19,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:46:19,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:46:19,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:46:19,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:46:19,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:46:19,924 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:46:19,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:46:19,924 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:46:19,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:46:19,925 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:46:19,925 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:46:19,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:46:19,926 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:46:19,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:46:19,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:46:19,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:46:19,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:46:19,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:46:19,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:46:19,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:46:19,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:46:19,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:46:19,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:46:20,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:46:20,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:46:20,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:46:20,177 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:46:20,178 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:46:20,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2023-04-01 04:46:21,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:46:21,715 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:46:21,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2023-04-01 04:46:21,723 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1435f135d/b23fc7b774a34382833f221cc8d80372/FLAG872bf170b [2023-04-01 04:46:21,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1435f135d/b23fc7b774a34382833f221cc8d80372 [2023-04-01 04:46:21,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:46:21,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:46:21,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:46:21,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:46:21,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:46:21,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:46:21" (1/1) ... [2023-04-01 04:46:21,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d89efb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:21, skipping insertion in model container [2023-04-01 04:46:21,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:46:21" (1/1) ... [2023-04-01 04:46:21,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:46:21,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:46:22,009 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_1121b.c[3884,3897] [2023-04-01 04:46:22,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:46:22,020 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:46:22,051 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_1121b.c[3884,3897] [2023-04-01 04:46:22,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:46:22,065 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:46:22,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22 WrapperNode [2023-04-01 04:46:22,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:46:22,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:46:22,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:46:22,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:46:22,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:46:22,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:46:22,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:46:22,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:46:22,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (1/1) ... [2023-04-01 04:46:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:46:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:46:22,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 04:46:22,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2023-04-01 04:46:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 04:46:22,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-04-01 04:46:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:46:22,369 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:46:22,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:46:22,910 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:46:23,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:46:23,324 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-04-01 04:46:23,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:46:23 BoogieIcfgContainer [2023-04-01 04:46:23,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:46:23,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:46:23,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:46:23,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:46:23,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:46:21" (1/3) ... [2023-04-01 04:46:23,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:46:23, skipping insertion in model container [2023-04-01 04:46:23,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:22" (2/3) ... [2023-04-01 04:46:23,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:46:23, skipping insertion in model container [2023-04-01 04:46:23,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:46:23" (3/3) ... [2023-04-01 04:46:23,338 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2023-04-01 04:46:23,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:46:23,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:46:23,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:46:23,411 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;@3d5cedf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:46:23,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:46:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 04:46:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 04:46:23,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:46:23,421 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] [2023-04-01 04:46:23,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:46:23,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:46:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2011489032, now seen corresponding path program 1 times [2023-04-01 04:46:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:46:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310625360] [2023-04-01 04:46:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:46:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:46:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:46:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:46:23,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:46:23,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310625360] [2023-04-01 04:46:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310625360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:46:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:46:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 04:46:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45714472] [2023-04-01 04:46:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:46:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 04:46:23,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:46:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 04:46:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:46:23,648 INFO L87 Difference]: Start difference. First operand has 53 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 04:46:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:46:23,742 INFO L93 Difference]: Finished difference Result 99 states and 153 transitions. [2023-04-01 04:46:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 04:46:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-04-01 04:46:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:46:23,753 INFO L225 Difference]: With dead ends: 99 [2023-04-01 04:46:23,753 INFO L226 Difference]: Without dead ends: 49 [2023-04-01 04:46:23,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:46:23,762 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:46:23,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 04:46:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-01 04:46:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-04-01 04:46:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 04:46:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-04-01 04:46:23,802 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 20 [2023-04-01 04:46:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:46:23,804 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-04-01 04:46:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 04:46:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-04-01 04:46:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 04:46:23,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:46:23,807 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] [2023-04-01 04:46:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:46:23,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:46:23,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:46:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -889862501, now seen corresponding path program 1 times [2023-04-01 04:46:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:46:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142439249] [2023-04-01 04:46:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:46:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:46:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:46:23,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 04:46:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:46:24,167 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 04:46:24,168 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 04:46:24,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:46:24,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:46:24,173 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 04:46:24,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:46:24,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:46:24 BoogieIcfgContainer [2023-04-01 04:46:24,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:46:24,206 INFO L158 Benchmark]: Toolchain (without parser) took 2464.67ms. Allocated memory is still 223.3MB. Free memory was 172.4MB in the beginning and 136.5MB in the end (delta: 35.9MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2023-04-01 04:46:24,207 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:46:24,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.50ms. Allocated memory is still 223.3MB. Free memory was 172.4MB in the beginning and 158.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 04:46:24,210 INFO L158 Benchmark]: Boogie Preprocessor took 83.13ms. Allocated memory is still 223.3MB. Free memory was 158.8MB in the beginning and 155.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-01 04:46:24,211 INFO L158 Benchmark]: RCFGBuilder took 1178.15ms. Allocated memory is still 223.3MB. Free memory was 155.7MB in the beginning and 109.8MB in the end (delta: 45.9MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. [2023-04-01 04:46:24,213 INFO L158 Benchmark]: TraceAbstraction took 874.21ms. Allocated memory is still 223.3MB. Free memory was 109.3MB in the beginning and 136.5MB in the end (delta: -27.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:46:24,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.50ms. Allocated memory is still 223.3MB. Free memory was 172.4MB in the beginning and 158.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 83.13ms. Allocated memory is still 223.3MB. Free memory was 158.8MB in the beginning and 155.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1178.15ms. Allocated memory is still 223.3MB. Free memory was 155.7MB in the beginning and 109.8MB in the end (delta: 45.9MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. * TraceAbstraction took 874.21ms. Allocated memory is still 223.3MB. Free memory was 109.3MB in the beginning and 136.5MB in the end (delta: -27.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 172, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; VAL [Zero_fmod={4:0}, one_fmod=1, x=6442450952] [L173] CALL, EXPR fmod_double(x, y) VAL [Zero_fmod={4:0}, \old(x)=6442450952, \old(y)=6442450954, one_fmod=1] [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [Zero_fmod={4:0}, \old(x)=6442450952, \old(y)=6442450954, one_fmod=1, x=6442450952, y=6442450954] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45] EXPR hy | ly [L45-L46] (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [(hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)=1, Zero_fmod={4:0}, \old(x)=6442450952, \old(y)=6442450954, hx=2146435072, hy | ((ly | -ly) >> 31)=0, hy | ly=7, hy=7, lx=6442450949, ly | -ly=7, ly=7, one_fmod=1, sx=-2147483648, x=6442450952, y=6442450954] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [Zero_fmod={4:0}, \old(x)=6442450952, \old(y)=6442450954, hx=2146435072, hy=7, lx=6442450949, ly=7, one_fmod=1, sx=-2147483648, x=6442450952, y=6442450954] [L173] RET, EXPR fmod_double(x, y) VAL [Zero_fmod={4:0}, fmod_double(x, y)=6442450953, one_fmod=1, x=6442450952, y=6442450954] [L173] double res = fmod_double(x, y); [L176] CALL, EXPR isnan_double(res) VAL [Zero_fmod={4:0}, \old(x)=6442450953, one_fmod=1] [L18] return x != x; [L176] RET, EXPR isnan_double(res) VAL [Zero_fmod={4:0}, isnan_double(res)=0, one_fmod=1, res=6442450953, x=6442450952, y=6442450954] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [Zero_fmod={4:0}, one_fmod=1, res=6442450953, x=6442450952, y=6442450954] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 50 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2023-04-01 04:46:24,234 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...