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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:22:40,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:22:40,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:22:40,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:22:40,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:22:40,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:22:40,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:22:40,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:22:40,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:22:40,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:22:40,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:22:40,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:22:40,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:22:40,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:22:40,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:22:40,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:22:40,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:22:40,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:22:40,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:22:40,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:22:40,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:22:40,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:22:40,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:22:40,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:22:40,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:22:40,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:22:40,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:22:40,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:22:40,250 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 01:22:40,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:22:40,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:22:40,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:22:40,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:22:40,267 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:22:40,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:22:40,268 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:22:40,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:22:40,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:22:40,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:22:40,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:22:40,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:22:40,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:22:40,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:22:40,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:22:40,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:22:40,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:22:40,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:22:40,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:22:40,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:22:40,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:22:40,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:22:40,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:22:40,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:22:40,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:22:40,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:22:40,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:22:40,343 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:22:40,343 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:22:40,344 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2019-09-08 01:22:40,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a790022e4/568cb6afe2e04b91b7ddc4824a4b2415/FLAG8b7a9944f [2019-09-08 01:22:40,866 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:22:40,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2019-09-08 01:22:40,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a790022e4/568cb6afe2e04b91b7ddc4824a4b2415/FLAG8b7a9944f [2019-09-08 01:22:41,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a790022e4/568cb6afe2e04b91b7ddc4824a4b2415 [2019-09-08 01:22:41,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:22:41,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:22:41,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:22:41,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:22:41,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:22:41,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a11b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41, skipping insertion in model container [2019-09-08 01:22:41,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,259 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:22:41,282 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:22:41,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:22:41,505 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:22:41,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:22:41,651 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:22:41,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41 WrapperNode [2019-09-08 01:22:41,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:22:41,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:22:41,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:22:41,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:22:41,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (1/1) ... [2019-09-08 01:22:41,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:22:41,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:22:41,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:22:41,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:22:41,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (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 01:22:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:22:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:22:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:22:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2019-09-08 01:22:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:22:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:22:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:22:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:22:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2019-09-08 01:22:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:22:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:22:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:22:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:22:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:22:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:22:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:22:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:22:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:22:42,122 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:22:42,122 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-08 01:22:42,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:22:42 BoogieIcfgContainer [2019-09-08 01:22:42,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:22:42,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:22:42,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:22:42,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:22:42,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:22:41" (1/3) ... [2019-09-08 01:22:42,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1191c54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:22:42, skipping insertion in model container [2019-09-08 01:22:42,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:41" (2/3) ... [2019-09-08 01:22:42,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1191c54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:22:42, skipping insertion in model container [2019-09-08 01:22:42,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:22:42" (3/3) ... [2019-09-08 01:22:42,133 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2019-09-08 01:22:42,143 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:22:42,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:22:42,168 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:22:42,194 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:22:42,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:22:42,195 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:22:42,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:22:42,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:22:42,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:22:42,195 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:22:42,195 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:22:42,196 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:22:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-09-08 01:22:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-08 01:22:42,219 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:42,220 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 01:22:42,223 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash 159633202, now seen corresponding path program 1 times [2019-09-08 01:22:42,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:42,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:42,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:42,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:42,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:42,392 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 01:22:42,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:22:42,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:22:42,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:22:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:22:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:22:42,419 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-09-08 01:22:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:42,448 INFO L93 Difference]: Finished difference Result 84 states and 118 transitions. [2019-09-08 01:22:42,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:22:42,450 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-09-08 01:22:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:42,463 INFO L225 Difference]: With dead ends: 84 [2019-09-08 01:22:42,464 INFO L226 Difference]: Without dead ends: 42 [2019-09-08 01:22:42,468 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 01:22:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-08 01:22:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-08 01:22:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 01:22:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-09-08 01:22:42,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 21 [2019-09-08 01:22:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:42,523 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-09-08 01:22:42,523 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:22:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-09-08 01:22:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:22:42,525 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:42,525 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 01:22:42,526 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:42,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1643831456, now seen corresponding path program 1 times [2019-09-08 01:22:42,527 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:42,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:42,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:42,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:42,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:22:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:22:42,693 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:22:42,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:22:42 BoogieIcfgContainer [2019-09-08 01:22:42,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:22:42,756 INFO L168 Benchmark]: Toolchain (without parser) took 1508.19 ms. Allocated memory was 133.2 MB in the beginning and 198.7 MB in the end (delta: 65.5 MB). Free memory was 88.8 MB in the beginning and 126.2 MB in the end (delta: -37.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,758 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.91 ms. Allocated memory was 133.2 MB in the beginning and 198.7 MB in the end (delta: 65.5 MB). Free memory was 88.6 MB in the beginning and 174.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,762 INFO L168 Benchmark]: Boogie Preprocessor took 43.09 ms. Allocated memory is still 198.7 MB. Free memory was 174.0 MB in the beginning and 172.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,763 INFO L168 Benchmark]: RCFGBuilder took 428.82 ms. Allocated memory is still 198.7 MB. Free memory was 172.1 MB in the beginning and 151.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,764 INFO L168 Benchmark]: TraceAbstraction took 625.06 ms. Allocated memory is still 198.7 MB. Free memory was 151.5 MB in the beginning and 126.2 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:42,775 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.91 ms. Allocated memory was 133.2 MB in the beginning and 198.7 MB in the end (delta: 65.5 MB). Free memory was 88.6 MB in the beginning and 174.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.09 ms. Allocated memory is still 198.7 MB. Free memory was 174.0 MB in the beginning and 172.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.82 ms. Allocated memory is still 198.7 MB. Free memory was 172.1 MB in the beginning and 151.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 625.06 ms. Allocated memory is still 198.7 MB. Free memory was 151.5 MB in the beginning and 126.2 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=9, \old(tiny_sqrt)=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = 0.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L92] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=7, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [\old(x)=7, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [\old(x)=7, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [\old(x)=7, hx=2139095040, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L92] RET, EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=8, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L92] float res = __ieee754_sqrtf(x); [L95] CALL, EXPR isnan_float(res) VAL [\old(x)=8, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L13] return x != x; VAL [\old(x)=8, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8] [L95] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=8, tiny_sqrt=1/1000000000000000000000000000000, x=7] [L95] COND TRUE !isnan_float(res) [L96] __VERIFIER_error() VAL [one_sqrt=1, res=8, tiny_sqrt=1/1000000000000000000000000000000, x=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 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=46occurred 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...