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_0490a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:21:59,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:21:59,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:21:59,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:21:59,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:21:59,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:21:59,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:21:59,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:21:59,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:21:59,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:21:59,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:21:59,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:21:59,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:21:59,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:21:59,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:21:59,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:21:59,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:21:59,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:21:59,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:21:59,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:21:59,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:21:59,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:21:59,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:21:59,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:21:59,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:21:59,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:21:59,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:21:59,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:21:59,746 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 01:21:59,763 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:21:59,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:21:59,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:21:59,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:21:59,765 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:21:59,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:21:59,766 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:21:59,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:21:59,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:21:59,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:21:59,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:21:59,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:21:59,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:21:59,771 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:21:59,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:21:59,771 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:21:59,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:21:59,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:21:59,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:21:59,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:21:59,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:21:59,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:21:59,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:21:59,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:21:59,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:21:59,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:21:59,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:21:59,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:21:59,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:21:59,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:21:59,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:21:59,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:21:59,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:21:59,827 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:21:59,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0490a.c [2019-09-08 01:21:59,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c3ec123/fc90cfd47b62456f839c8bb09f8efa0e/FLAG8aacc3892 [2019-09-08 01:22:00,418 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:22:00,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0490a.c [2019-09-08 01:22:00,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c3ec123/fc90cfd47b62456f839c8bb09f8efa0e/FLAG8aacc3892 [2019-09-08 01:22:00,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c3ec123/fc90cfd47b62456f839c8bb09f8efa0e [2019-09-08 01:22:00,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:22:00,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:22:00,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:22:00,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:22:00,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:22:00,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:22:00" (1/1) ... [2019-09-08 01:22:00,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60445f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:00, skipping insertion in model container [2019-09-08 01:22:00,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:22:00" (1/1) ... [2019-09-08 01:22:00,821 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:22:00,847 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:22:01,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:22:01,180 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:22:01,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:22:01,259 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:22:01,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01 WrapperNode [2019-09-08 01:22:01,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:22:01,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:22:01,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:22:01,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:22:01,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (1/1) ... [2019-09-08 01:22:01,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:22:01,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:22:01,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:22:01,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:22:01,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (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 01:22:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:22:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:22:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:22:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2019-09-08 01:22:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acosf [2019-09-08 01:22:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:22:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:22:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:22:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:22:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:22:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:22:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acosf [2019-09-08 01:22:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:22:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:22:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:22:01,888 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:22:01,889 INFO L283 CfgBuilder]: Removed 12 assume(true) statements. [2019-09-08 01:22:01,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:22:01 BoogieIcfgContainer [2019-09-08 01:22:01,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:22:01,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:22:01,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:22:01,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:22:01,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:22:00" (1/3) ... [2019-09-08 01:22:01,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3f13d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:22:01, skipping insertion in model container [2019-09-08 01:22:01,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:22:01" (2/3) ... [2019-09-08 01:22:01,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3f13d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:22:01, skipping insertion in model container [2019-09-08 01:22:01,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:22:01" (3/3) ... [2019-09-08 01:22:01,899 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0490a.c [2019-09-08 01:22:01,909 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:22:01,917 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:22:01,934 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:22:01,965 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:22:01,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:22:01,966 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:22:01,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:22:01,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:22:01,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:22:01,967 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:22:01,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:22:01,968 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:22:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2019-09-08 01:22:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:22:01,995 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:01,996 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 01:22:01,998 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:02,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:02,003 INFO L82 PathProgramCache]: Analyzing trace with hash -652363391, now seen corresponding path program 1 times [2019-09-08 01:22:02,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:02,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:02,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:02,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:02,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:02,169 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 01:22:02,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:22:02,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:22:02,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:22:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:22:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:22:02,195 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2019-09-08 01:22:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:02,231 INFO L93 Difference]: Finished difference Result 126 states and 188 transitions. [2019-09-08 01:22:02,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:22:02,232 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-08 01:22:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:02,244 INFO L225 Difference]: With dead ends: 126 [2019-09-08 01:22:02,245 INFO L226 Difference]: Without dead ends: 63 [2019-09-08 01:22:02,249 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 01:22:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-09-08 01:22:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-09-08 01:22:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-09-08 01:22:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2019-09-08 01:22:02,303 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 22 [2019-09-08 01:22:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:02,304 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2019-09-08 01:22:02,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:22:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2019-09-08 01:22:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 01:22:02,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:02,307 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] [2019-09-08 01:22:02,308 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:02,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1965902596, now seen corresponding path program 1 times [2019-09-08 01:22:02,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:02,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:02,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:02,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:02,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:22:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:22:02,480 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:22:02,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:22:02 BoogieIcfgContainer [2019-09-08 01:22:02,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:22:02,541 INFO L168 Benchmark]: Toolchain (without parser) took 1737.17 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.6 MB in the beginning and 115.0 MB in the end (delta: -25.4 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,542 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.44 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.4 MB in the beginning and 175.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,544 INFO L168 Benchmark]: Boogie Preprocessor took 62.62 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 172.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,545 INFO L168 Benchmark]: RCFGBuilder took 567.19 ms. Allocated memory is still 201.9 MB. Free memory was 172.6 MB in the beginning and 144.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,546 INFO L168 Benchmark]: TraceAbstraction took 647.19 ms. Allocated memory is still 201.9 MB. Free memory was 144.7 MB in the beginning and 115.0 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:22:02,550 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.44 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.4 MB in the beginning and 175.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.62 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 172.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.19 ms. Allocated memory is still 201.9 MB. Free memory was 172.6 MB in the beginning and 144.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 647.19 ms. Allocated memory is still 201.9 MB. Free memory was 144.7 MB in the beginning and 115.0 MB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 173]: 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 someUnaryDOUBLEoperation at line 87, overapproximation of bitwiseAnd at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 168. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L84-L91] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; VAL [\old(one_acos)=4294967316, \old(one_sqrt)=4294967307, \old(pi)=4294967310, \old(pi)=4294967306, \old(pi)=4294967319, \old(pS0_acos)=4294967300, \old(pS1_acos)=4294967317, \old(pS2_acos)=4294967318, \old(pS3_acos)=4294967304, \old(pS4_acos)=4294967309, \old(pS5_acos)=4294967320, \old(qS1_acos)=4294967303, \old(qS2_acos)=4294967311, \old(qS3_acos)=4294967314, \old(qS4_acos)=4294967305, \old(tiny_sqrt)=4294967315, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L168] float x = 1.0f / 0.0f; VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L169] CALL, EXPR __ieee754_acosf(x) VAL [\old(x)=4294967312, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L94] float z, p, q, r, w, s, c, df; [L95] __int32_t hx, ix; VAL [\old(x)=4294967312, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L97] ieee_float_shape_type gf_u; [L98] gf_u.value = (x) [L99] EXPR gf_u.word [L99] (hx) = gf_u.word [L101] ix = hx & 0x7fffffff VAL [\old(x)=4294967312, hx=3, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L102] COND TRUE ix == 0x3f800000 VAL [\old(x)=4294967312, hx=3, ix=1065353216, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L103] COND TRUE hx > 0 [L104] return 0.0; VAL [\old(x)=4294967312, \result=0, hx=3, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L169] RET, EXPR __ieee754_acosf(x) VAL [__ieee754_acosf(x)=0, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L169] float res = __ieee754_acosf(x); [L172] CALL, EXPR isnan_float(res) VAL [\old(x)=0, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L13] return x != x; VAL [\old(x)=0, \result=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=0] [L172] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] [L172] COND TRUE !isnan_float(res) [L173] __VERIFIER_error() VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=4294967312] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 67 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 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=67occurred 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, 45 NumberOfCodeBlocks, 45 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...