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_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:26,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:26,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:26,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:26,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:26,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:26,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:26,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:26,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:26,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:26,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:26,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:26,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:26,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:26,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:26,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:26,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:26,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:26,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:26,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:26,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:26,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:26,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:26,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:26,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:26,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:26,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:26,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:26,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:26,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:26,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:26,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:26,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:26,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:26,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:26,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:26,357 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 01:23:26,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:26,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:26,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:26,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:26,380 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:26,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:26,381 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:26,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:26,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:26,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:26,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:26,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:26,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:26,384 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:26,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:26,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:26,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:26,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:26,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:26,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:26,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:26,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:26,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:26,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:26,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:26,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:26,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:26,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:26,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:26,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:26,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:26,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:26,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:26,455 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:26,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2019-09-08 01:23:26,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145657561/67df5c8da3654df9b1e388f393caf715/FLAGc9e3360ac [2019-09-08 01:23:26,974 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:26,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2019-09-08 01:23:26,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145657561/67df5c8da3654df9b1e388f393caf715/FLAGc9e3360ac [2019-09-08 01:23:27,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145657561/67df5c8da3654df9b1e388f393caf715 [2019-09-08 01:23:27,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:27,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:27,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:27,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:27,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:27,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630c9713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27, skipping insertion in model container [2019-09-08 01:23:27,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,414 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:27,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:27,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:27,599 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:27,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:27,746 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:27,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27 WrapperNode [2019-09-08 01:23:27,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:27,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:27,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:27,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:27,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (1/1) ... [2019-09-08 01:23:27,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:27,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:27,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:27,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:27,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (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 01:23:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2019-09-08 01:23:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2019-09-08 01:23:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:28,220 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:28,221 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-09-08 01:23:28,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:28 BoogieIcfgContainer [2019-09-08 01:23:28,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:28,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:28,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:28,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:28,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:27" (1/3) ... [2019-09-08 01:23:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30906f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:28, skipping insertion in model container [2019-09-08 01:23:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:27" (2/3) ... [2019-09-08 01:23:28,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30906f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:28, skipping insertion in model container [2019-09-08 01:23:28,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:28" (3/3) ... [2019-09-08 01:23:28,230 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072d.c [2019-09-08 01:23:28,239 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:28,247 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:28,262 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:28,286 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:28,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:28,287 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:28,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:28,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:28,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:28,288 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:28,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:28,288 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:28,307 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-08 01:23:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:23:28,312 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:28,313 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 01:23:28,315 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 753691903, now seen corresponding path program 1 times [2019-09-08 01:23:28,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:28,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:28,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:28,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:28,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:28,432 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 01:23:28,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:28,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:28,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:28,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:28,452 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-08 01:23:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:28,473 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2019-09-08 01:23:28,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:28,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-08 01:23:28,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:28,482 INFO L225 Difference]: With dead ends: 68 [2019-09-08 01:23:28,482 INFO L226 Difference]: Without dead ends: 34 [2019-09-08 01:23:28,485 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 01:23:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-08 01:23:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-08 01:23:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-08 01:23:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-09-08 01:23:28,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2019-09-08 01:23:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:28,527 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-09-08 01:23:28,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-09-08 01:23:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 01:23:28,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:28,529 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:28,529 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1111015325, now seen corresponding path program 1 times [2019-09-08 01:23:28,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:28,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:28,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:28,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:28,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:28,653 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:28,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:28 BoogieIcfgContainer [2019-09-08 01:23:28,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:28,683 INFO L168 Benchmark]: Toolchain (without parser) took 1286.17 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 89.4 MB in the beginning and 131.2 MB in the end (delta: -41.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,684 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.49 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 89.2 MB in the beginning and 177.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,686 INFO L168 Benchmark]: Boogie Preprocessor took 49.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 175.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,687 INFO L168 Benchmark]: RCFGBuilder took 424.46 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 156.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,688 INFO L168 Benchmark]: TraceAbstraction took 457.49 ms. Allocated memory is still 199.8 MB. Free memory was 156.2 MB in the beginning and 131.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:28,692 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 141.6 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.49 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 89.2 MB in the beginning and 177.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 175.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.46 ms. Allocated memory is still 199.8 MB. Free memory was 175.3 MB in the beginning and 156.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 457.49 ms. Allocated memory is still 199.8 MB. Free memory was 156.2 MB in the beginning and 131.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 66, overapproximation of bitwiseAnd at line 19, overapproximation of someUnaryFLOAToperation at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L62] float x = -0.0f; [L63] CALL, EXPR trunc_float(x) VAL [\old(x)=4294967299] [L13] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=4294967299, x=4294967299] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=4294967299, exponent_less_127=255, signbit=-1, w=-2, x=4294967299] [L21] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=4294967299, exponent_less_127=255, signbit=-1, w=-2, x=4294967299] [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; VAL [\old(x)=4294967299, exponent_less_127=255, signbit=-1, w=-2, x=4294967299] [L63] RET, EXPR trunc_float(x) VAL [trunc_float(x)=4294967295, x=4294967299] [L63] float res = trunc_float(x); [L66] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4294967295, res == -0.0f && __signbit_float(res) == 1=0, x=4294967299] [L66] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L67] __VERIFIER_error() VAL [res=4294967295, x=4294967299] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 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=38occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 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...