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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:29,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:29,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:29,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:29,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:29,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:29,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:29,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:29,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:29,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:29,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:29,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:29,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:29,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:29,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:29,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:29,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:29,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:29,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:29,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:29,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:29,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:29,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:29,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:29,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:29,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:29,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:29,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:29,212 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 01:23:29,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:29,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:29,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:29,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:29,228 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:29,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:29,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:29,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:29,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:29,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:29,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:29,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:29,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:29,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:29,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:29,230 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:29,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:29,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:29,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:29,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:29,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:29,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:29,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:29,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:29,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:29,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:29,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:29,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:29,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:29,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:29,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:29,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:29,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:29,280 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:29,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2019-09-08 01:23:29,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46f44397/ed938abac449488396ca41f636d9a3b8/FLAG9c976a9e6 [2019-09-08 01:23:29,813 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:29,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2019-09-08 01:23:29,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46f44397/ed938abac449488396ca41f636d9a3b8/FLAG9c976a9e6 [2019-09-08 01:23:30,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46f44397/ed938abac449488396ca41f636d9a3b8 [2019-09-08 01:23:30,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:30,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:30,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:30,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:30,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:30,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@969901d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30, skipping insertion in model container [2019-09-08 01:23:30,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,238 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:30,260 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:30,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:30,562 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:30,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:30,622 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:30,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30 WrapperNode [2019-09-08 01:23:30,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:30,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:30,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:30,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:30,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (1/1) ... [2019-09-08 01:23:30,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:30,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:30,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:30,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:30,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (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 01:23:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2019-09-08 01:23:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:30,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-08 01:23:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:31,159 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:31,159 INFO L283 CfgBuilder]: Removed 12 assume(true) statements. [2019-09-08 01:23:31,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:31 BoogieIcfgContainer [2019-09-08 01:23:31,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:31,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:31,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:31,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:31,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:30" (1/3) ... [2019-09-08 01:23:31,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f37eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:31, skipping insertion in model container [2019-09-08 01:23:31,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:30" (2/3) ... [2019-09-08 01:23:31,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f37eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:31, skipping insertion in model container [2019-09-08 01:23:31,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:31" (3/3) ... [2019-09-08 01:23:31,168 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2019-09-08 01:23:31,177 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:31,185 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:31,201 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:31,231 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:31,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:31,232 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:31,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:31,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:31,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:31,233 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:31,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:31,233 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-08 01:23:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:23:31,258 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:31,259 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 01:23:31,261 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:31,267 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2019-09-08 01:23:31,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:31,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:31,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:31,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:31,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:31,415 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 01:23:31,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:31,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:31,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:31,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:31,440 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-08 01:23:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:31,469 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2019-09-08 01:23:31,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:31,471 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-08 01:23:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:31,483 INFO L225 Difference]: With dead ends: 102 [2019-09-08 01:23:31,483 INFO L226 Difference]: Without dead ends: 51 [2019-09-08 01:23:31,486 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 01:23:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-08 01:23:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-09-08 01:23:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-08 01:23:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-09-08 01:23:31,528 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2019-09-08 01:23:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:31,529 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-09-08 01:23:31,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-09-08 01:23:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-08 01:23:31,531 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:31,531 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, 1, 1] [2019-09-08 01:23:31,531 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2019-09-08 01:23:31,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:31,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:31,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:31,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:31,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:31,786 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:31,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:31 BoogieIcfgContainer [2019-09-08 01:23:31,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:31,826 INFO L168 Benchmark]: Toolchain (without parser) took 1606.05 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 89.9 MB in the beginning and 118.6 MB in the end (delta: -28.7 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,827 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.60 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 89.7 MB in the beginning and 175.1 MB in the end (delta: -85.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,829 INFO L168 Benchmark]: Boogie Preprocessor took 46.57 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 172.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,830 INFO L168 Benchmark]: RCFGBuilder took 490.98 ms. Allocated memory is still 200.8 MB. Free memory was 172.8 MB in the beginning and 147.9 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,831 INFO L168 Benchmark]: TraceAbstraction took 661.94 ms. Allocated memory is still 200.8 MB. Free memory was 147.3 MB in the beginning and 118.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:31,835 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.60 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 89.7 MB in the beginning and 175.1 MB in the end (delta: -85.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.57 ms. Allocated memory is still 200.8 MB. Free memory was 175.1 MB in the beginning and 172.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.98 ms. Allocated memory is still 200.8 MB. Free memory was 172.8 MB in the beginning and 147.9 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 661.94 ms. Allocated memory is still 200.8 MB. Free memory was 147.3 MB in the beginning and 118.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967307, \old(Zero_fmod)=4294967302, one_fmod=1, Zero_fmod={-2:0}] [L116] float x = __VERIFIER_nondet_float(); [L117] float y = 0.0f; VAL [one_fmod=1, x=4294967304, y=0, Zero_fmod={-2:0}] [L119] CALL, EXPR fmod_float(x, y) VAL [\old(x)=4294967304, \old(y)=0, one_fmod=1, Zero_fmod={-2:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=4294967304, \old(y)=0, one_fmod=1, x=4294967304, y=0, Zero_fmod={-2:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=4294967304, \old(y)=0, one_fmod=1, sx=-1, x=4294967304, y=0, Zero_fmod={-2:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=4294967304, \old(y)=0, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=4294967304, y=0, Zero_fmod={-2:0}] [L119] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967303, one_fmod=1, x=4294967304, y=0, Zero_fmod={-2:0}] [L119] float res = fmod_float(x, y); [L122] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967303, one_fmod=1, Zero_fmod={-2:0}] [L108] return x != x; VAL [\old(x)=4294967303, \result=0, one_fmod=1, x=4294967303, Zero_fmod={-2:0}] [L122] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, one_fmod=1, res=4294967303, x=4294967304, y=0, Zero_fmod={-2:0}] [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() VAL [one_fmod=1, res=4294967303, x=4294967304, y=0, Zero_fmod={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 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=55occurred 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 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...