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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:41,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:41,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:41,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:41,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:41,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:41,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:41,699 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 01:23:41,714 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:41,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:41,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:41,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:41,716 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:41,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:41,716 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:41,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:41,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:41,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:41,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:41,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:41,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:41,718 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:41,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:41,718 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:41,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:41,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:41,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:41,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:41,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:41,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:41,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:41,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:41,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:41,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:41,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:41,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:41,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:41,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:41,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:41,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:41,769 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:41,769 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:41,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2019-09-08 01:23:41,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50298f2a4/70f9762d9db9436fbbc2938059c5d9a8/FLAG31220270f [2019-09-08 01:23:42,295 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:42,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2019-09-08 01:23:42,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50298f2a4/70f9762d9db9436fbbc2938059c5d9a8/FLAG31220270f [2019-09-08 01:23:42,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50298f2a4/70f9762d9db9436fbbc2938059c5d9a8 [2019-09-08 01:23:42,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:42,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:42,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:42,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:42,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:42,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:42" (1/1) ... [2019-09-08 01:23:42,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39268ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:42, skipping insertion in model container [2019-09-08 01:23:42,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:42" (1/1) ... [2019-09-08 01:23:42,654 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:42,672 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:42,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:42,919 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:43,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:43,086 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:43,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43 WrapperNode [2019-09-08 01:23:43,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:43,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:43,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:43,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:43,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (1/1) ... [2019-09-08 01:23:43,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:43,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:43,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:43,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:43,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (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 01:23:43,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2019-09-08 01:23:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2019-09-08 01:23:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2019-09-08 01:23:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:43,607 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:43,607 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 01:23:43,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:43 BoogieIcfgContainer [2019-09-08 01:23:43,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:43,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:43,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:43,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:43,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:42" (1/3) ... [2019-09-08 01:23:43,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bb215a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:43, skipping insertion in model container [2019-09-08 01:23:43,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:43" (2/3) ... [2019-09-08 01:23:43,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bb215a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:43, skipping insertion in model container [2019-09-08 01:23:43,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:43" (3/3) ... [2019-09-08 01:23:43,617 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2019-09-08 01:23:43,628 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:43,636 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:43,656 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:43,699 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:43,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:43,700 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:43,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:43,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:43,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:43,701 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:43,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:43,701 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-09-08 01:23:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:23:43,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:43,730 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:43,732 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2019-09-08 01:23:43,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:43,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:43,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:43,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:43,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:43,879 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 01:23:43,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:43,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:43,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:43,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:43,900 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-09-08 01:23:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:43,930 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2019-09-08 01:23:43,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:43,931 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-08 01:23:43,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:43,942 INFO L225 Difference]: With dead ends: 79 [2019-09-08 01:23:43,942 INFO L226 Difference]: Without dead ends: 40 [2019-09-08 01:23:43,946 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 01:23:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-08 01:23:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-08 01:23:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:23:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-08 01:23:43,996 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2019-09-08 01:23:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:43,996 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-08 01:23:43,996 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-08 01:23:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 01:23:43,999 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:43,999 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 01:23:44,000 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2019-09-08 01:23:44,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:44,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:44,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:44,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:44,104 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 01:23:44,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:44,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:44,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:44,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:44,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:44,108 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2019-09-08 01:23:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:44,144 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2019-09-08 01:23:44,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:44,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-09-08 01:23:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:44,148 INFO L225 Difference]: With dead ends: 59 [2019-09-08 01:23:44,149 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 01:23:44,150 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 01:23:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-09-08 01:23:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-08 01:23:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-09-08 01:23:44,163 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2019-09-08 01:23:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:44,163 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-09-08 01:23:44,163 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-09-08 01:23:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 01:23:44,165 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:44,165 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:44,166 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:44,166 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2019-09-08 01:23:44,167 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:44,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:44,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:44,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:44,286 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 01:23:44,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:44,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:44,287 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:44,289 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2019-09-08 01:23:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:44,321 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2019-09-08 01:23:44,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:44,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-09-08 01:23:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:44,323 INFO L225 Difference]: With dead ends: 63 [2019-09-08 01:23:44,324 INFO L226 Difference]: Without dead ends: 48 [2019-09-08 01:23:44,325 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:44,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-08 01:23:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2019-09-08 01:23:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-08 01:23:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-09-08 01:23:44,335 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2019-09-08 01:23:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:44,335 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-09-08 01:23:44,335 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-09-08 01:23:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 01:23:44,337 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:44,337 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:44,338 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2019-09-08 01:23:44,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:44,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:44,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:44,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:44,419 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:44,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:44 BoogieIcfgContainer [2019-09-08 01:23:44,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:44,465 INFO L168 Benchmark]: Toolchain (without parser) took 1825.93 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 89.7 MB in the beginning and 113.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,466 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.19 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 89.5 MB in the beginning and 178.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,468 INFO L168 Benchmark]: Boogie Preprocessor took 43.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 176.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,468 INFO L168 Benchmark]: RCFGBuilder took 478.42 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 158.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,469 INFO L168 Benchmark]: TraceAbstraction took 851.71 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 113.9 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:44,474 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 448.19 ms. Allocated memory was 134.2 MB in the beginning and 202.4 MB in the end (delta: 68.2 MB). Free memory was 89.5 MB in the beginning and 178.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 176.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.42 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 158.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 851.71 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 113.9 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...