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_0930.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:06,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:06,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:06,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:06,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:06,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:06,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:06,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:06,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:06,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:06,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:06,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:06,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:06,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:06,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:06,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:06,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:06,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:06,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:06,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:06,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:06,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:06,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:06,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:06,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:23:06,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:23:06,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:23:06,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:23:06,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:23:06,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:23:06,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:06,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:06,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:06,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:06,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:06,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:06,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:06,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:06,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:06,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:06,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:06,328 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 01:23:06,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:06,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:06,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:06,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:06,348 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:06,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:06,349 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:06,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:06,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:06,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:06,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:06,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:06,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:06,351 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:06,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:06,352 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:06,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:06,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:06,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:06,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:06,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:06,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:06,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:06,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:06,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:06,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:06,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:06,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:06,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:06,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:06,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:06,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:06,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:06,423 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:06,424 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0930.c [2019-09-08 01:23:06,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a73605/2d2924ed40d44d839d053f6e0222570f/FLAGe80a84065 [2019-09-08 01:23:06,930 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:06,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0930.c [2019-09-08 01:23:06,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a73605/2d2924ed40d44d839d053f6e0222570f/FLAGe80a84065 [2019-09-08 01:23:07,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491a73605/2d2924ed40d44d839d053f6e0222570f [2019-09-08 01:23:07,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:07,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:07,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:07,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:07,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:07,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e75bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07, skipping insertion in model container [2019-09-08 01:23:07,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,331 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:07,366 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:07,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:07,564 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:07,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:07,722 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:07,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07 WrapperNode [2019-09-08 01:23:07,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:07,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:07,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:07,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:07,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (1/1) ... [2019-09-08 01:23:07,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:07,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:07,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:07,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:07,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (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 01:23:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2019-09-08 01:23:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:07,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2019-09-08 01:23:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:08,254 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:08,254 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-09-08 01:23:08,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:08 BoogieIcfgContainer [2019-09-08 01:23:08,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:08,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:08,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:08,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:08,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:07" (1/3) ... [2019-09-08 01:23:08,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbf701d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:08, skipping insertion in model container [2019-09-08 01:23:08,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:07" (2/3) ... [2019-09-08 01:23:08,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbf701d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:08, skipping insertion in model container [2019-09-08 01:23:08,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:08" (3/3) ... [2019-09-08 01:23:08,264 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2019-09-08 01:23:08,273 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:08,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:08,298 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:08,341 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:08,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:08,342 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:08,342 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:08,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:08,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:08,342 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:08,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:08,342 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-09-08 01:23:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 01:23:08,364 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:08,365 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:08,367 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:08,373 INFO L82 PathProgramCache]: Analyzing trace with hash -11734775, now seen corresponding path program 1 times [2019-09-08 01:23:08,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:08,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:08,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:08,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:08,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:08,543 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 01:23:08,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:08,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:08,550 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:08,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:08,568 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-09-08 01:23:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:08,604 INFO L93 Difference]: Finished difference Result 86 states and 127 transitions. [2019-09-08 01:23:08,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:08,606 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-08 01:23:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:08,622 INFO L225 Difference]: With dead ends: 86 [2019-09-08 01:23:08,622 INFO L226 Difference]: Without dead ends: 43 [2019-09-08 01:23:08,630 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 01:23:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-08 01:23:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-08 01:23:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 01:23:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-09-08 01:23:08,695 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 17 [2019-09-08 01:23:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:08,696 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-09-08 01:23:08,696 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-09-08 01:23:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:23:08,700 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:08,700 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:08,701 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1928303816, now seen corresponding path program 1 times [2019-09-08 01:23:08,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:08,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:08,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:08,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:08,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:08,888 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:08,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:08 BoogieIcfgContainer [2019-09-08 01:23:08,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:08,929 INFO L168 Benchmark]: Toolchain (without parser) took 1613.26 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 90.2 MB in the beginning and 123.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,930 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 108.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.87 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 90.0 MB in the beginning and 174.6 MB in the end (delta: -84.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,932 INFO L168 Benchmark]: Boogie Preprocessor took 58.09 ms. Allocated memory is still 200.3 MB. Free memory was 174.6 MB in the beginning and 172.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,933 INFO L168 Benchmark]: RCFGBuilder took 474.17 ms. Allocated memory is still 200.3 MB. Free memory was 172.8 MB in the beginning and 149.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,934 INFO L168 Benchmark]: TraceAbstraction took 669.45 ms. Allocated memory is still 200.3 MB. Free memory was 149.9 MB in the beginning and 123.1 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:08,938 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 108.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.87 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 90.0 MB in the beginning and 174.6 MB in the end (delta: -84.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.09 ms. Allocated memory is still 200.3 MB. Free memory was 174.6 MB in the beginning and 172.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.17 ms. Allocated memory is still 200.3 MB. Free memory was 172.8 MB in the beginning and 149.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 669.45 ms. Allocated memory is still 200.3 MB. Free memory was 149.9 MB in the beginning and 123.1 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 120, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L12-L16] 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; [L18] static const float zero_log = 0.0; VAL [\old(Lg1_log)=19, \old(Lg2_log)=20, \old(Lg3_log)=5, \old(Lg4_log)=8, \old(Lg5_log)=10, \old(Lg6_log)=16, \old(Lg7_log)=15, \old(ln2_hi_log)=7, \old(ln2_lo_log)=11, \old(two25_log)=14, \old(zero_log)=13, 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] [L116] float x = 1.0f; 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, x=1, zero_log=0] [L117] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=1, 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] [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; VAL [\old(x)=1, 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=1, zero_log=0] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L30] k = 0 VAL [\old(x)=1, ix=0, 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=1, zero_log=0] [L31] COND TRUE ((ix & 0x7fffffff) == 0) [L32] return -two25_log / zero_log; VAL [\old(x)=1, ix=0, 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=1, zero_log=0] [L117] RET, EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=9, 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=1, zero_log=0] [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 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=9, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __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=9, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 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=47occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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...