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_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:22,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:22,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:22,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:22,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:22,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:22,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:22,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:22,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:22,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:22,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:22,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:22,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:22,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:22,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:22,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:22,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:22,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:22,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:22,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:22,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:22,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:22,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:22,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:22,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:23:22,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:23:22,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:23:22,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:23:22,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:23:22,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:23:22,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:22,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:22,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:22,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:22,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:22,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:22,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:22,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:22,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:22,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:22,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:22,957 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 01:23:22,971 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:22,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:22,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:22,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:22,973 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:22,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:22,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:22,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:22,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:22,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:22,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:22,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:22,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:22,975 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:22,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:22,976 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:22,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:22,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:22,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:22,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:22,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:22,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:22,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:22,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:22,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:22,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:22,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:22,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:22,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:23,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:23,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:23,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:23,035 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:23,036 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:23,036 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2019-09-08 01:23:23,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbf8216b/9483ecf21e444d64ac50c17a954d52a1/FLAG0c56403de [2019-09-08 01:23:23,567 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:23,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2019-09-08 01:23:23,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbf8216b/9483ecf21e444d64ac50c17a954d52a1/FLAG0c56403de [2019-09-08 01:23:23,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbf8216b/9483ecf21e444d64ac50c17a954d52a1 [2019-09-08 01:23:23,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:23,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:23,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:23,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:23,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:23,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:23" (1/1) ... [2019-09-08 01:23:23,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d59ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:23, skipping insertion in model container [2019-09-08 01:23:23,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:23" (1/1) ... [2019-09-08 01:23:23,976 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:23,996 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:24,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:24,223 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:24,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:24,360 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:24,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24 WrapperNode [2019-09-08 01:23:24,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:24,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:24,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:24,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:24,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (1/1) ... [2019-09-08 01:23:24,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:24,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:24,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:24,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:24,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (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 01:23:24,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:24,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:24,469 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2019-09-08 01:23:24,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:24,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2019-09-08 01:23:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:24,797 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:24,798 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-08 01:23:24,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:24 BoogieIcfgContainer [2019-09-08 01:23:24,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:24,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:24,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:24,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:24,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:23" (1/3) ... [2019-09-08 01:23:24,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10977462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:24, skipping insertion in model container [2019-09-08 01:23:24,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:24" (2/3) ... [2019-09-08 01:23:24,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10977462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:24, skipping insertion in model container [2019-09-08 01:23:24,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:24" (3/3) ... [2019-09-08 01:23:24,808 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2019-09-08 01:23:24,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:24,851 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:24,871 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:24,897 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:24,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:24,898 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:24,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:24,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:24,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:24,899 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:24,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:24,899 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-09-08 01:23:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:23:24,923 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:24,924 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:24,926 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2019-09-08 01:23:24,932 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:24,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:24,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:24,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:24,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:25,059 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 01:23:25,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:25,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:25,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:25,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:25,077 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-09-08 01:23:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:25,100 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2019-09-08 01:23:25,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:25,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-08 01:23:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:25,109 INFO L225 Difference]: With dead ends: 78 [2019-09-08 01:23:25,110 INFO L226 Difference]: Without dead ends: 39 [2019-09-08 01:23:25,113 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 01:23:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-08 01:23:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-08 01:23:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 01:23:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2019-09-08 01:23:25,150 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2019-09-08 01:23:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:25,150 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2019-09-08 01:23:25,150 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2019-09-08 01:23:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 01:23:25,152 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:25,152 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:25,152 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:25,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2019-09-08 01:23:25,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:25,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:25,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:25,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:25,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:25,279 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:25,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:25 BoogieIcfgContainer [2019-09-08 01:23:25,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:25,310 INFO L168 Benchmark]: Toolchain (without parser) took 1349.89 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.5 MB in the beginning and 131.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,311 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.49 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,313 INFO L168 Benchmark]: Boogie Preprocessor took 55.82 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 176.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,314 INFO L168 Benchmark]: RCFGBuilder took 381.80 ms. Allocated memory is still 201.9 MB. Free memory was 176.4 MB in the beginning and 156.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,315 INFO L168 Benchmark]: TraceAbstraction took 507.48 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 131.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:25,319 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.49 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.82 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 176.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.80 ms. Allocated memory is still 201.9 MB. Free memory was 176.4 MB in the beginning and 156.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 507.48 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 131.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=4294967298, huge_floor=1000000000000000000000000000000] [L75] float x = 0.0f; VAL [huge_floor=1000000000000000000000000000000, x=0] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=0] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=4294967297, huge_floor=1000000000000000000000000000000, x=0] [L76] float res = floor_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_floor=1000000000000000000000000000000, res=4294967297, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=4294967297, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...