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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:36,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:36,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:36,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:36,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:36,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:36,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:36,978 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 01:23:36,992 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:36,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:36,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:36,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:36,994 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:36,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:36,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:36,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:36,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:36,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:36,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:36,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:36,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:36,996 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:36,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:36,996 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:36,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:36,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:36,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:36,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:36,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:36,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:36,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:36,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:36,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:36,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:36,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:36,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:36,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:37,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:37,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:37,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:37,044 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:37,044 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:37,045 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2019-09-08 01:23:37,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66445a61/17f8de6cfc5b49b792d92fe5fde8e43e/FLAGb3bb62443 [2019-09-08 01:23:37,576 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:37,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2019-09-08 01:23:37,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66445a61/17f8de6cfc5b49b792d92fe5fde8e43e/FLAGb3bb62443 [2019-09-08 01:23:37,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66445a61/17f8de6cfc5b49b792d92fe5fde8e43e [2019-09-08 01:23:37,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:37,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:37,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:37,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:37,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:37,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:37" (1/1) ... [2019-09-08 01:23:37,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88ef889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:37, skipping insertion in model container [2019-09-08 01:23:37,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:37" (1/1) ... [2019-09-08 01:23:37,970 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:37,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:38,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:38,176 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:38,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:38,226 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:38,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38 WrapperNode [2019-09-08 01:23:38,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:38,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:38,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:38,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:38,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (1/1) ... [2019-09-08 01:23:38,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:38,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:38,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:38,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:38,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (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 01:23:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2019-09-08 01:23:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2019-09-08 01:23:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2019-09-08 01:23:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2019-09-08 01:23:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:38,720 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:38,720 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-08 01:23:38,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:38 BoogieIcfgContainer [2019-09-08 01:23:38,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:38,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:38,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:38,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:38,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:37" (1/3) ... [2019-09-08 01:23:38,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c605df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:38, skipping insertion in model container [2019-09-08 01:23:38,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:38" (2/3) ... [2019-09-08 01:23:38,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c605df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:38, skipping insertion in model container [2019-09-08 01:23:38,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:38" (3/3) ... [2019-09-08 01:23:38,746 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-09-08 01:23:38,756 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:38,778 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:38,794 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:38,822 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:38,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:38,823 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:38,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:38,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:38,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:38,823 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:38,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:38,824 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-09-08 01:23:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 01:23:38,845 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:38,846 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 01:23:38,848 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1674881228, now seen corresponding path program 1 times [2019-09-08 01:23:38,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:38,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:38,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:38,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:38,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:39,002 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 01:23:39,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:39,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:39,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:39,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:39,023 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-09-08 01:23:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:39,050 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2019-09-08 01:23:39,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:39,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-09-08 01:23:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:39,061 INFO L225 Difference]: With dead ends: 71 [2019-09-08 01:23:39,061 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 01:23:39,065 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 01:23:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 01:23:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-08 01:23:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-08 01:23:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-09-08 01:23:39,109 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2019-09-08 01:23:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:39,110 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-09-08 01:23:39,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-09-08 01:23:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 01:23:39,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:39,113 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, 1] [2019-09-08 01:23:39,113 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:39,114 INFO L82 PathProgramCache]: Analyzing trace with hash 312623789, now seen corresponding path program 1 times [2019-09-08 01:23:39,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:39,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:39,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:39,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:39,223 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 01:23:39,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:39,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:39,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:39,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:39,228 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2019-09-08 01:23:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:39,296 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-09-08 01:23:39,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:39,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-09-08 01:23:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:39,303 INFO L225 Difference]: With dead ends: 51 [2019-09-08 01:23:39,303 INFO L226 Difference]: Without dead ends: 40 [2019-09-08 01:23:39,304 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 01:23:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-08 01:23:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-08 01:23:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:23:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-08 01:23:39,328 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-09-08 01:23:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:39,328 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-08 01:23:39,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-08 01:23:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-08 01:23:39,332 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:39,332 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, 1, 1, 1, 1] [2019-09-08 01:23:39,335 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash -409741261, now seen corresponding path program 1 times [2019-09-08 01:23:39,336 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:39,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:39,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:39,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:39,427 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 01:23:39,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:39,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:39,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:39,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:39,432 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2019-09-08 01:23:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:39,479 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-09-08 01:23:39,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:39,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-08 01:23:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:39,482 INFO L225 Difference]: With dead ends: 55 [2019-09-08 01:23:39,483 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 01:23:39,484 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 01:23:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 01:23:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-09-08 01:23:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:23:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-08 01:23:39,503 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2019-09-08 01:23:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:39,504 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-08 01:23:39,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-08 01:23:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-08 01:23:39,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:39,506 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, 1, 1, 1, 1] [2019-09-08 01:23:39,506 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1097810548, now seen corresponding path program 1 times [2019-09-08 01:23:39,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:39,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:39,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:39,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:39,630 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:39,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:39 BoogieIcfgContainer [2019-09-08 01:23:39,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:39,663 INFO L168 Benchmark]: Toolchain (without parser) took 1708.55 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 89.6 MB in the beginning and 114.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,664 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.99 ms. Allocated memory is still 134.7 MB. Free memory was 89.2 MB in the beginning and 78.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,666 INFO L168 Benchmark]: Boogie Preprocessor took 142.53 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 78.8 MB in the beginning and 177.3 MB in the end (delta: -98.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,667 INFO L168 Benchmark]: RCFGBuilder took 354.56 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 159.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,667 INFO L168 Benchmark]: TraceAbstraction took 930.51 ms. Allocated memory is still 201.3 MB. Free memory was 159.3 MB in the beginning and 114.5 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:39,672 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 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.99 ms. Allocated memory is still 134.7 MB. Free memory was 89.2 MB in the beginning and 78.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.53 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 78.8 MB in the beginning and 177.3 MB in the end (delta: -98.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.56 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 159.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 930.51 ms. Allocated memory is still 201.3 MB. Free memory was 159.3 MB in the beginning and 114.5 MB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=4286578692] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L12] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L35] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=4286578692, __fpclassify_float(x)=0, x=4286578691, y=4286578692] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; VAL [\old(x)=4286578691, \old(y)=4286578692, \result=4286578692, x=4286578691, y=4286578692] [L56] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578692, x=4286578691, y=4286578692] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578692] [L44] return x != x; VAL [\old(x)=4286578692, \result=0, x=4286578692] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578692, x=4286578691, y=4286578692] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=4286578692, x=4286578691, y=4286578692] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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...