java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:02,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:02,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:02,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:02,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:02,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:02,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:02,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:02,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:02,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:02,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:02,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:02,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:02,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:02,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:02,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:02,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:02,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:02,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:02,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:02,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:02,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:02,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:02,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:02,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:02,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:02,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:02,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:02,990 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 [2019-09-08 01:23:03,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:03,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:03,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:03,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:03,033 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:03,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:03,033 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:03,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:03,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:03,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:03,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:03,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:03,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:03,034 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:03,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:03,035 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:03,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:03,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:03,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:03,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:03,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:03,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:03,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:03,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:03,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:03,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:03,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:03,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:03,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:03,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:03,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:03,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:03,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:03,087 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:03,087 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920b.c [2019-09-08 01:23:03,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e73a188f/5309b495298d45f1a5b90cd4e4ecfc65/FLAGc56b325ec [2019-09-08 01:23:03,598 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:03,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0920b.c [2019-09-08 01:23:03,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e73a188f/5309b495298d45f1a5b90cd4e4ecfc65/FLAGc56b325ec [2019-09-08 01:23:03,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e73a188f/5309b495298d45f1a5b90cd4e4ecfc65 [2019-09-08 01:23:03,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:03,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:03,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:03,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:03,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:03,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:03" (1/1) ... [2019-09-08 01:23:03,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d522d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:03, skipping insertion in model container [2019-09-08 01:23:03,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:03" (1/1) ... [2019-09-08 01:23:03,999 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:04,025 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:04,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:04,330 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:04,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:04,393 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:04,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04 WrapperNode [2019-09-08 01:23:04,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:04,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:04,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:04,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:04,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... [2019-09-08 01:23:04,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:04,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:04,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:04,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:04,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2019-09-08 01:23:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2019-09-08 01:23:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2019-09-08 01:23:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2019-09-08 01:23:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:04,917 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:04,917 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-09-08 01:23:04,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:04 BoogieIcfgContainer [2019-09-08 01:23:04,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:04,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:04,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:04,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:04,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:03" (1/3) ... [2019-09-08 01:23:04,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ea354a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:04, skipping insertion in model container [2019-09-08 01:23:04,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:04" (2/3) ... [2019-09-08 01:23:04,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ea354a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:04, skipping insertion in model container [2019-09-08 01:23:04,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:04" (3/3) ... [2019-09-08 01:23:04,927 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920b.c [2019-09-08 01:23:04,936 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:04,944 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:04,960 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:04,988 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:04,988 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:04,988 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:04,988 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:04,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:04,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:04,989 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:04,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:04,989 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-09-08 01:23:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-08 01:23:05,011 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:05,012 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:05,013 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:05,018 INFO L82 PathProgramCache]: Analyzing trace with hash 52554285, now seen corresponding path program 1 times [2019-09-08 01:23:05,020 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:05,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:05,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:05,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:05,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:05,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:05,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:05,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:05,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:05,204 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-09-08 01:23:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:05,226 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2019-09-08 01:23:05,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:05,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-09-08 01:23:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:05,237 INFO L225 Difference]: With dead ends: 78 [2019-09-08 01:23:05,237 INFO L226 Difference]: Without dead ends: 39 [2019-09-08 01:23:05,241 INFO L628 BasicCegarLoop]: 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 [2019-09-08 01:23:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-08 01:23:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-08 01:23:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 01:23:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-09-08 01:23:05,278 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 21 [2019-09-08 01:23:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:05,280 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-09-08 01:23:05,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-09-08 01:23:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:23:05,282 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:05,282 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:05,282 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1196272887, now seen corresponding path program 1 times [2019-09-08 01:23:05,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:05,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:05,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:05,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:05,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:05,390 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:05,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:05 BoogieIcfgContainer [2019-09-08 01:23:05,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:05,444 INFO L168 Benchmark]: Toolchain (without parser) took 1459.39 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 91.4 MB in the beginning and 122.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,445 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.98 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 91.2 MB in the beginning and 175.3 MB in the end (delta: -84.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,447 INFO L168 Benchmark]: Boogie Preprocessor took 45.52 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 173.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,447 INFO L168 Benchmark]: RCFGBuilder took 479.14 ms. Allocated memory is still 200.8 MB. Free memory was 173.0 MB in the beginning and 150.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,448 INFO L168 Benchmark]: TraceAbstraction took 521.76 ms. Allocated memory is still 200.8 MB. Free memory was 150.0 MB in the beginning and 122.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:05,453 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.98 ms. Allocated memory was 135.3 MB in the beginning and 200.8 MB in the end (delta: 65.5 MB). Free memory was 91.2 MB in the beginning and 175.3 MB in the end (delta: -84.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.52 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 173.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.14 ms. Allocated memory is still 200.8 MB. Free memory was 173.0 MB in the beginning and 150.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 521.76 ms. Allocated memory is still 200.8 MB. Free memory was 150.0 MB in the beginning and 122.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 125]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 43. Possible FailurePath: [L24-L28] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L30] static const float zero_log = 0.0; VAL [\old(Lg1_log)=4294967311, \old(Lg2_log)=4294967312, \old(Lg3_log)=4294967296, \old(Lg4_log)=4294967300, \old(Lg5_log)=4294967302, \old(Lg6_log)=4294967310, \old(Lg7_log)=4294967309, \old(ln2_hi_log)=4294967298, \old(ln2_lo_log)=4294967305, \old(two25_log)=4294967308, \old(zero_log)=4294967307, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L120] float x = -1.0f / 0.0f; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L121] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=4294967304, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L33] float hfsq, f, s, z, R, w, t1, t2, dk; [L34] __int32_t k, ix, i, j; VAL [\old(x)=4294967304, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967304, zero_log=0] [L37] ieee_float_shape_type gf_u; [L38] gf_u.value = (x) [L39] EXPR gf_u.word [L39] (ix) = gf_u.word [L42] k = 0 VAL [\old(x)=4294967304, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967304, zero_log=0] [L43] COND TRUE ((ix & 0x7fffffff) == 0) [L44] return -two25_log / zero_log; VAL [\old(x)=4294967304, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967304, zero_log=0] [L121] RET, EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=4294967301, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967304, zero_log=0] [L121] float res = __ieee754_logf(x); [L124] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967301, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L111] return x != x; VAL [\old(x)=4294967301, \result=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967301, zero_log=0] [L124] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967301, two25_log=33554432, x=4294967304, zero_log=0] [L124] COND TRUE !isnan_float(res) [L125] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967301, two25_log=33554432, x=4294967304, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...