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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0710.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:44:25,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:44:25,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:44:25,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:44:25,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:44:25,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:44:25,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:44:25,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:44:25,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:44:25,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:44:25,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:44:25,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:44:25,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:44:25,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:44:25,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:44:25,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:44:25,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:44:25,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:44:25,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:44:25,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:44:25,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:44:25,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:44:25,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:44:25,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:44:25,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:44:25,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:44:25,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:44:25,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:44:25,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:44:25,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:44:25,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:44:25,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:44:25,369 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:44:25,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:44:25,371 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:44:25,371 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:44:25,372 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:44:25,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:44:25,372 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:44:25,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:44:25,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:44:25,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:44:25,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:44:25,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:44:25,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:44:25,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:44:25,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:44:25,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:44:25,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:44:25,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:44:25,375 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:44:25,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:44:25,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:44:25,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:44:25,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:44:25,377 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:44:25,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:44:25,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:44:25,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:44:25,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:44:25,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:44:25,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:44:25,446 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:44:25,447 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:44:25,448 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0710.c [2019-09-10 01:44:25,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c08150ec/d02afbf5232f4b97bda8b3db03da075d/FLAGf4865efc1 [2019-09-10 01:44:25,963 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:44:25,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0710.c [2019-09-10 01:44:25,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c08150ec/d02afbf5232f4b97bda8b3db03da075d/FLAGf4865efc1 [2019-09-10 01:44:26,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c08150ec/d02afbf5232f4b97bda8b3db03da075d [2019-09-10 01:44:26,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:44:26,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:44:26,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:26,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:44:26,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:44:26,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b70148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26, skipping insertion in model container [2019-09-10 01:44:26,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,359 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:44:26,377 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:44:26,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:26,593 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:44:26,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:26,753 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:44:26,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26 WrapperNode [2019-09-10 01:44:26,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:26,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:44:26,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:44:26,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:44:26,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (1/1) ... [2019-09-10 01:44:26,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:44:26,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:44:26,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:44:26,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:44:26,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (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 [2019-09-10 01:44:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:44:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:44:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-10 01:44:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2019-09-10 01:44:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:44:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:44:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:44:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:44:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:44:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:44:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:44:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:44:26,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:44:27,280 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:44:27,280 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-10 01:44:27,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:27 BoogieIcfgContainer [2019-09-10 01:44:27,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:44:27,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:44:27,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:44:27,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:44:27,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:44:26" (1/3) ... [2019-09-10 01:44:27,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa7c906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:27, skipping insertion in model container [2019-09-10 01:44:27,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:26" (2/3) ... [2019-09-10 01:44:27,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa7c906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:27, skipping insertion in model container [2019-09-10 01:44:27,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:27" (3/3) ... [2019-09-10 01:44:27,289 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-09-10 01:44:27,298 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:44:27,307 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:44:27,324 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:44:27,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:44:27,347 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:44:27,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:44:27,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:44:27,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:44:27,348 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:44:27,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:44:27,348 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:44:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-09-10 01:44:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-10 01:44:27,375 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:27,376 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] [2019-09-10 01:44:27,378 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:27,383 INFO L82 PathProgramCache]: Analyzing trace with hash 264747661, now seen corresponding path program 1 times [2019-09-10 01:44:27,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:27,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:27,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:27,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:27,432 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:27,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:27,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:44:27,525 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:27,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:44:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:44:27,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:44:27,549 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2019-09-10 01:44:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:27,570 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2019-09-10 01:44:27,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:44:27,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-10 01:44:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:27,584 INFO L225 Difference]: With dead ends: 46 [2019-09-10 01:44:27,584 INFO L226 Difference]: Without dead ends: 41 [2019-09-10 01:44:27,587 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 [2019-09-10 01:44:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-10 01:44:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-09-10 01:44:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-10 01:44:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2019-09-10 01:44:27,633 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 22 [2019-09-10 01:44:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:27,634 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-09-10 01:44:27,634 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:44:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2019-09-10 01:44:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-10 01:44:27,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:27,636 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] [2019-09-10 01:44:27,636 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1438359689, now seen corresponding path program 1 times [2019-09-10 01:44:27,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:27,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:27,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:27,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:27,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:27,664 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:44:27,664 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:44:27,664 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:44:27,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:27,707 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:44:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-09-10 01:44:27,761 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-09-10 01:44:27,762 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:44:27,792 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-09-10 01:44:27,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:44:27 BoogieIcfgContainer [2019-09-10 01:44:27,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:44:27,795 INFO L168 Benchmark]: Toolchain (without parser) took 1450.23 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 90.0 MB in the beginning and 128.9 MB in the end (delta: -38.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,796 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.16 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 89.8 MB in the beginning and 179.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,798 INFO L168 Benchmark]: Boogie Preprocessor took 50.27 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,799 INFO L168 Benchmark]: RCFGBuilder took 476.59 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 156.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,800 INFO L168 Benchmark]: TraceAbstraction took 510.17 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 128.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:27,804 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 108.8 MB in the beginning and 108.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 409.16 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 89.8 MB in the beginning and 179.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.27 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.59 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 156.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 510.17 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 128.9 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f [L94] CALL, EXPR __ieee754_sqrtf(x) [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L94] RET, EXPR __ieee754_sqrtf(x) [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) [L13] return x != x; [L97] RET, EXPR isnan_float(res) [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNKNOWN Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 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=48occurred 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, 44 NumberOfCodeBlocks, 44 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...