./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68aa61f206da468fa7dcfce700dfa7d384c1ee8e ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68aa61f206da468fa7dcfce700dfa7d384c1ee8e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:48:14,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:48:14,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:48:14,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:48:14,946 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:48:14,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:48:14,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:48:14,948 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:48:14,949 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:48:14,950 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:48:14,951 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:48:14,951 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:48:14,951 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:48:14,952 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:48:14,953 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:48:14,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:48:14,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:48:14,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:48:14,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:48:14,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:48:14,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:48:14,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:48:14,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:48:14,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:48:14,961 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:48:14,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:48:14,962 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:48:14,963 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:48:14,963 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:48:14,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:48:14,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:48:14,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:48:14,965 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:48:14,965 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:48:14,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:48:14,966 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:48:14,966 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:48:14,976 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:48:14,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:48:14,977 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:48:14,977 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:48:14,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:48:14,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:48:14,979 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:48:14,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:48:14,979 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:48:14,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:48:14,980 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:48:14,981 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:48:14,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:48:14,984 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:48:14,984 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:48:14,984 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:48:14,984 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:48:14,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:48:14,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:48:14,985 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:48:14,985 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68aa61f206da468fa7dcfce700dfa7d384c1ee8e [2018-11-18 12:48:15,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:48:15,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:48:15,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:48:15,021 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:48:15,021 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:48:15,022 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:15,066 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/4c1b20742/ed0983a38ea94207bc0f9250af24899a/FLAG9de2519a3 [2018-11-18 12:48:15,479 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:48:15,479 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:15,485 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/4c1b20742/ed0983a38ea94207bc0f9250af24899a/FLAG9de2519a3 [2018-11-18 12:48:15,495 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/4c1b20742/ed0983a38ea94207bc0f9250af24899a [2018-11-18 12:48:15,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:48:15,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:48:15,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:15,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:48:15,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:48:15,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5bccf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15, skipping insertion in model container [2018-11-18 12:48:15,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:48:15,532 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:48:15,674 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:15,676 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:48:15,699 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:15,714 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:48:15,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15 WrapperNode [2018-11-18 12:48:15,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:15,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:15,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:48:15,715 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:48:15,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:15,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:48:15,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:48:15,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:48:15,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... [2018-11-18 12:48:15,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:48:15,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:48:15,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:48:15,790 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:48:15,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/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 [2018-11-18 12:48:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2018-11-18 12:48:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2018-11-18 12:48:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:48:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:48:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:48:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:48:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 12:48:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:48:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:48:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:48:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:48:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:48:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-11-18 12:48:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-11-18 12:48:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:48:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:48:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:48:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:48:16,036 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:48:16,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:16 BoogieIcfgContainer [2018-11-18 12:48:16,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:48:16,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:48:16,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:48:16,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:48:16,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:48:15" (1/3) ... [2018-11-18 12:48:16,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217d2cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:16, skipping insertion in model container [2018-11-18 12:48:16,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:15" (2/3) ... [2018-11-18 12:48:16,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217d2cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:16, skipping insertion in model container [2018-11-18 12:48:16,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:16" (3/3) ... [2018-11-18 12:48:16,041 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:16,047 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:48:16,053 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:48:16,063 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:48:16,081 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:48:16,081 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:48:16,081 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:48:16,081 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:48:16,081 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:48:16,081 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:48:16,081 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:48:16,081 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:48:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-18 12:48:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:48:16,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:16,095 INFO L375 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] [2018-11-18 12:48:16,097 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:16,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1570328738, now seen corresponding path program 1 times [2018-11-18 12:48:16,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:16,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:16,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:16,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:16,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:16,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:16,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:48:16,219 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:48:16,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:48:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:48:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:48:16,230 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2018-11-18 12:48:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:16,254 INFO L93 Difference]: Finished difference Result 100 states and 143 transitions. [2018-11-18 12:48:16,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:48:16,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-18 12:48:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:16,261 INFO L225 Difference]: With dead ends: 100 [2018-11-18 12:48:16,261 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 12:48:16,264 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:48:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 12:48:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 12:48:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 12:48:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2018-11-18 12:48:16,289 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 23 [2018-11-18 12:48:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:16,289 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2018-11-18 12:48:16,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:48:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2018-11-18 12:48:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 12:48:16,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:16,291 INFO L375 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, 1, 1] [2018-11-18 12:48:16,291 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:16,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash 453174176, now seen corresponding path program 1 times [2018-11-18 12:48:16,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:48:16,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:16,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:16,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:48:16,293 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:48:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:48:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:48:16,372 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:48:16,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:48:16 BoogieIcfgContainer [2018-11-18 12:48:16,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:48:16,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:48:16,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:48:16,404 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:48:16,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:16" (3/4) ... [2018-11-18 12:48:16,406 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:48:16,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:48:16,407 INFO L168 Benchmark]: Toolchain (without parser) took 909.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -99.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:16,408 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:48:16,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.34 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:16,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:16,409 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:48:16,409 INFO L168 Benchmark]: RCFGBuilder took 246.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:16,410 INFO L168 Benchmark]: TraceAbstraction took 366.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:16,410 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:48:16,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.34 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 945.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 246.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 366.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 140]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L24-L28] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L30] static const float zero_log = 0.0; VAL [\old(Lg1_log)=6442450962, \old(Lg2_log)=6442450963, \old(Lg3_log)=6442450946, \old(Lg4_log)=6442450949, \old(Lg5_log)=6442450952, \old(Lg6_log)=6442450960, \old(Lg7_log)=6442450959, \old(ln2_hi_log)=6442450948, \old(ln2_lo_log)=6442450955, \old(two25_log)=6442450958, \old(zero_log)=6442450957, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L132] float x = __VERIFIER_nondet_float(); [L134] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] CALL, EXPR isfinite_float(x) VAL [\old(x)=6442450950, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L115] __int32_t ix; VAL [\old(x)=6442450950, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L117] FCALL ieee_float_shape_type gf_u; [L118] FCALL gf_u.value = (x) [L119] EXPR, FCALL gf_u.word [L119] (ix) = gf_u.word [L120] COND FALSE !(0) VAL [\old(x)=6442450950, ix=-2147483648, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L121] ix &= 0x7fffffff [L122] RET return (((ix) < 0x7f800000L)); VAL [\old(x)=6442450950, \result=1, ix=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L134] EXPR isfinite_float(x) VAL [isfinite_float(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] EXPR x < 0 && isfinite_float(x) VAL [isfinite_float(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] COND TRUE (x < 0 && isfinite_float(x)) [L136] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=6442450950, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L33] float hfsq, f, s, z, R, w, t1, t2, dk; [L34] __int32_t k, ix, i, j; VAL [\old(x)=6442450950, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L37] FCALL ieee_float_shape_type gf_u; [L38] FCALL gf_u.value = (x) [L39] EXPR, FCALL gf_u.word [L39] (ix) = gf_u.word [L40] COND FALSE !(0) VAL [\old(x)=6442450950, ix=3, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L42] k = 0 VAL [\old(x)=6442450950, ix=3, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L43] COND TRUE ((ix & 0x7fffffff) == 0) [L44] RET return -two25_log / zero_log; VAL [\old(x)=6442450950, ix=3, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L136] EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=6442450951, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450950, zero_log=0] [L136] float res = __ieee754_logf(x); [L139] CALL, EXPR isnan_float(res) VAL [\old(x)=6442450951, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L111] RET return x != x; VAL [\old(x)=6442450951, \result=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=6442450951, zero_log=0] [L139] EXPR isnan_float(res) VAL [isnan_float(res)=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=6442450951, two25_log=33554432, x=6442450950, zero_log=0] [L139] COND TRUE !isnan_float(res) [L140] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=6442450951, two25_log=33554432, x=6442450950, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 0 SDslu, 60 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 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... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 12:48:17,798 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:48:17,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:48:17,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:48:17,808 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:48:17,809 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:48:17,809 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:48:17,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:48:17,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:48:17,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:48:17,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:48:17,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:48:17,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:48:17,814 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:48:17,815 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:48:17,816 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:48:17,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:48:17,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:48:17,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:48:17,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:48:17,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:48:17,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:48:17,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:48:17,824 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:48:17,824 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:48:17,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:48:17,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:48:17,826 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:48:17,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:48:17,828 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:48:17,828 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:48:17,829 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:48:17,829 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:48:17,829 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:48:17,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:48:17,830 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:48:17,830 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:48:17,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:48:17,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:48:17,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:48:17,841 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:48:17,841 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:48:17,841 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:48:17,841 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:48:17,842 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:48:17,842 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:48:17,843 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:48:17,843 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:48:17,843 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:48:17,843 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:48:17,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:48:17,844 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:48:17,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:48:17,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:48:17,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:48:17,847 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:48:17,848 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:48:17,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:48:17,848 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:48:17,848 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:48:17,848 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68aa61f206da468fa7dcfce700dfa7d384c1ee8e [2018-11-18 12:48:17,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:48:17,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:48:17,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:48:17,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:48:17,891 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:48:17,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:17,934 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/9054d4ff1/2faa0ef60f81449c9e3c6d78efd1cc46/FLAGce5a6f9cc [2018-11-18 12:48:18,265 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:48:18,265 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/sv-benchmarks/c/float-newlib/float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:18,270 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/9054d4ff1/2faa0ef60f81449c9e3c6d78efd1cc46/FLAGce5a6f9cc [2018-11-18 12:48:18,695 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/data/9054d4ff1/2faa0ef60f81449c9e3c6d78efd1cc46 [2018-11-18 12:48:18,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:48:18,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:48:18,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:18,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:48:18,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:48:18,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb5b9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18, skipping insertion in model container [2018-11-18 12:48:18,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:48:18,728 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:48:18,870 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:18,875 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:48:18,907 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:48:18,925 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:48:18,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18 WrapperNode [2018-11-18 12:48:18,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:48:18,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:18,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:48:18,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:48:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:48:18,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:48:18,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:48:18,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:48:18,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:18,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:19,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:19,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... [2018-11-18 12:48:19,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:48:19,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:48:19,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:48:19,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:48:19,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/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 [2018-11-18 12:48:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2018-11-18 12:48:19,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2018-11-18 12:48:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:48:19,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:48:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 12:48:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:48:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:48:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:48:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:48:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:48:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-11-18 12:48:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-11-18 12:48:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:48:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:48:19,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:48:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 12:48:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:48:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:48:19,331 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:48:29,920 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:48:29,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:29 BoogieIcfgContainer [2018-11-18 12:48:29,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:48:29,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:48:29,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:48:29,923 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:48:29,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:48:18" (1/3) ... [2018-11-18 12:48:29,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371306d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:29, skipping insertion in model container [2018-11-18 12:48:29,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:48:18" (2/3) ... [2018-11-18 12:48:29,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371306d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:48:29, skipping insertion in model container [2018-11-18 12:48:29,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:29" (3/3) ... [2018-11-18 12:48:29,925 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a_true-unreach-call.c [2018-11-18 12:48:29,930 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:48:29,935 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:48:29,943 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:48:29,961 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:48:29,961 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:48:29,961 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:48:29,961 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:48:29,961 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:48:29,962 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:48:29,962 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:48:29,962 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:48:29,962 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:48:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-11-18 12:48:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:48:29,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:29,978 INFO L375 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] [2018-11-18 12:48:29,979 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:29,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:29,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1076403453, now seen corresponding path program 1 times [2018-11-18 12:48:29,985 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:48:29,985 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 12:48:29,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:30,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:30,219 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:48:30,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:30,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:48:30,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:48:30,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:48:30,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:48:30,252 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2018-11-18 12:48:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:30,267 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2018-11-18 12:48:30,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:48:30,267 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 12:48:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:30,274 INFO L225 Difference]: With dead ends: 97 [2018-11-18 12:48:30,274 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:48:30,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:48:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:48:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 12:48:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 12:48:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2018-11-18 12:48:30,308 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 22 [2018-11-18 12:48:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:30,309 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 12:48:30,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:48:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2018-11-18 12:48:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:48:30,309 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:30,309 INFO L375 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] [2018-11-18 12:48:30,310 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:30,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2027247431, now seen corresponding path program 1 times [2018-11-18 12:48:30,310 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:48:30,310 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 12:48:30,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:30,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:30,532 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:48:30,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:30,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:48:30,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:48:30,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:48:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:48:30,543 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 3 states. [2018-11-18 12:48:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:30,556 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2018-11-18 12:48:30,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:48:30,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-18 12:48:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:30,557 INFO L225 Difference]: With dead ends: 81 [2018-11-18 12:48:30,557 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:48:30,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:48:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:48:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 12:48:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 12:48:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-18 12:48:30,561 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 23 [2018-11-18 12:48:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:30,562 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 12:48:30,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:48:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2018-11-18 12:48:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 12:48:30,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:30,563 INFO L375 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, 1] [2018-11-18 12:48:30,563 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:30,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash -625572669, now seen corresponding path program 1 times [2018-11-18 12:48:30,563 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:48:30,563 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 12:48:30,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:30,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:30,864 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:48:30,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:30,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:48:30,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:48:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:48:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:48:30,874 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 7 states. [2018-11-18 12:48:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:35,167 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2018-11-18 12:48:35,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:48:35,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-11-18 12:48:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:35,170 INFO L225 Difference]: With dead ends: 62 [2018-11-18 12:48:35,170 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 12:48:35,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:48:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 12:48:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-11-18 12:48:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 12:48:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2018-11-18 12:48:35,175 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 31 [2018-11-18 12:48:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:35,175 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2018-11-18 12:48:35,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:48:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-11-18 12:48:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 12:48:35,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:35,176 INFO L375 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, 1, 1] [2018-11-18 12:48:35,176 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:35,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:35,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2133520055, now seen corresponding path program 1 times [2018-11-18 12:48:35,177 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:48:35,177 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 12:48:35,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:35,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:35,888 WARN L180 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 12:48:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:36,241 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:48:36,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:36,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:48:36,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:48:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:48:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:48:36,254 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 8 states. [2018-11-18 12:48:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:48,534 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 12:48:48,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:48:48,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 12:48:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:48,536 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:48:48,536 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:48:48,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:48:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:48:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 12:48:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 12:48:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-11-18 12:48:48,542 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 32 [2018-11-18 12:48:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:48,542 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-11-18 12:48:48,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:48:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-11-18 12:48:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 12:48:48,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:48:48,543 INFO L375 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, 1, 1, 1] [2018-11-18 12:48:48,543 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:48:48,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:48:48,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1873664511, now seen corresponding path program 1 times [2018-11-18 12:48:48,543 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:48:48,544 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 12:48:48,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:48:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:48:48,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:48:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:48:48,692 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:48:48,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:48:48,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:48:48,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:48:48,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:48:48,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:48:48,701 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 7 states. [2018-11-18 12:48:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:48:51,443 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-11-18 12:48:51,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:48:51,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2018-11-18 12:48:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:48:51,444 INFO L225 Difference]: With dead ends: 52 [2018-11-18 12:48:51,444 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:48:51,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:48:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:48:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:48:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:48:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:48:51,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-11-18 12:48:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:48:51,446 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:48:51,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:48:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:48:51,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:48:51,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:48:51,656 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 111) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 111) the Hoare annotation is: true [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 111) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point L116-1(lines 116 120) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point isfinite_floatFINAL(lines 114 123) no Hoare annotation was computed. [2018-11-18 12:48:51,781 INFO L428 ceAbstractionStarter]: At program point L116-3(lines 116 120) the Hoare annotation is: true [2018-11-18 12:48:51,781 INFO L425 ceAbstractionStarter]: For program point L116-4(lines 116 120) no Hoare annotation was computed. [2018-11-18 12:48:51,782 INFO L428 ceAbstractionStarter]: At program point isfinite_floatENTRY(lines 114 123) the Hoare annotation is: true [2018-11-18 12:48:51,782 INFO L425 ceAbstractionStarter]: For program point isfinite_floatEXIT(lines 114 123) no Hoare annotation was computed. [2018-11-18 12:48:51,782 INFO L425 ceAbstractionStarter]: For program point L97(lines 97 101) no Hoare annotation was computed. [2018-11-18 12:48:51,782 INFO L425 ceAbstractionStarter]: For program point L52-1(lines 52 56) no Hoare annotation was computed. [2018-11-18 12:48:51,782 INFO L421 ceAbstractionStarter]: At program point L52-3(lines 52 56) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (and (exists ((__ieee754_logf_~ix~1 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __ieee754_logf_~ix~1) ((_ extract 30 23) __ieee754_logf_~ix~1) ((_ extract 22 0) __ieee754_logf_~ix~1)) |__ieee754_logf_#in~x|) (not (bvslt __ieee754_logf_~ix~1 (_ bv0 32))))) (= (fp ((_ extract 31 31) __ieee754_logf_~ix~1) ((_ extract 30 23) __ieee754_logf_~ix~1) ((_ extract 22 0) __ieee754_logf_~ix~1)) |__ieee754_logf_#in~x|))) [2018-11-18 12:48:51,782 INFO L425 ceAbstractionStarter]: For program point L69(lines 69 76) no Hoare annotation was computed. [2018-11-18 12:48:51,782 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 40) no Hoare annotation was computed. [2018-11-18 12:48:51,783 INFO L421 ceAbstractionStarter]: At program point L36-3(lines 36 40) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (= __ieee754_logf_~x |__ieee754_logf_#in~x|)) [2018-11-18 12:48:51,783 INFO L425 ceAbstractionStarter]: For program point L36-4(lines 36 40) no Hoare annotation was computed. [2018-11-18 12:48:51,783 INFO L425 ceAbstractionStarter]: For program point L61-1(lines 61 65) no Hoare annotation was computed. [2018-11-18 12:48:51,783 INFO L428 ceAbstractionStarter]: At program point __ieee754_logfENTRY(lines 32 108) the Hoare annotation is: true [2018-11-18 12:48:51,783 INFO L421 ceAbstractionStarter]: At program point L61-3(lines 61 65) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (exists ((__ieee754_logf_~ix~1 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __ieee754_logf_~ix~1) ((_ extract 30 23) __ieee754_logf_~ix~1) ((_ extract 22 0) __ieee754_logf_~ix~1)) |__ieee754_logf_#in~x|) (not (bvslt __ieee754_logf_~ix~1 (_ bv0 32)))))) [2018-11-18 12:48:51,783 INFO L425 ceAbstractionStarter]: For program point __ieee754_logfFINAL(lines 32 108) no Hoare annotation was computed. [2018-11-18 12:48:51,783 INFO L425 ceAbstractionStarter]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2018-11-18 12:48:51,783 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 57) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L49-1(lines 49 57) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L78(lines 78 83) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L103(lines 103 106) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L95(lines 95 107) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point __ieee754_logfEXIT(lines 32 108) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 48) no Hoare annotation was computed. [2018-11-18 12:48:51,784 INFO L425 ceAbstractionStarter]: For program point L43(lines 43 44) no Hoare annotation was computed. [2018-11-18 12:48:51,785 INFO L425 ceAbstractionStarter]: For program point L68(lines 68 84) no Hoare annotation was computed. [2018-11-18 12:48:51,785 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:48:51,785 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~zero_log~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) [2018-11-18 12:48:51,785 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:48:51,785 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:48:51,785 INFO L425 ceAbstractionStarter]: For program point L134-6(lines 134 143) no Hoare annotation was computed. [2018-11-18 12:48:51,785 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 125 146) the Hoare annotation is: true [2018-11-18 12:48:51,785 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 125 146) no Hoare annotation was computed. [2018-11-18 12:48:51,786 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2018-11-18 12:48:51,786 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 125 146) no Hoare annotation was computed. [2018-11-18 12:48:51,786 INFO L425 ceAbstractionStarter]: For program point L140(line 140) no Hoare annotation was computed. [2018-11-18 12:48:51,786 INFO L421 ceAbstractionStarter]: At program point L139(line 139) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (and (fp.lt main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (exists ((__ieee754_logf_~x (_ FloatingPoint 8 24))) (= main_~res~0 (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven __ieee754_logf_~x __ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))))))) [2018-11-18 12:48:51,786 INFO L425 ceAbstractionStarter]: For program point L139-1(lines 139 142) no Hoare annotation was computed. [2018-11-18 12:48:51,786 INFO L421 ceAbstractionStarter]: At program point L136(line 136) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (fp.lt main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) [2018-11-18 12:48:51,786 INFO L425 ceAbstractionStarter]: For program point L136-1(line 136) no Hoare annotation was computed. [2018-11-18 12:48:51,787 INFO L425 ceAbstractionStarter]: For program point L134(line 134) no Hoare annotation was computed. [2018-11-18 12:48:51,787 INFO L421 ceAbstractionStarter]: At program point L134-1(line 134) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (and (fp.lt main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) |main_#t~short12|)) [2018-11-18 12:48:51,787 INFO L425 ceAbstractionStarter]: For program point L134-2(line 134) no Hoare annotation was computed. [2018-11-18 12:48:51,787 INFO L425 ceAbstractionStarter]: For program point L134-4(lines 134 143) no Hoare annotation was computed. [2018-11-18 12:48:51,794 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,794 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,795 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,795 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,795 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,797 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,798 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,798 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,798 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,798 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,799 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,799 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,800 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,801 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,801 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,801 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:48:51 BoogieIcfgContainer [2018-11-18 12:48:51,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:48:51,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:48:51,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:48:51,803 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:48:51,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:48:29" (3/4) ... [2018-11-18 12:48:51,806 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:48:51,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 12:48:51,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:48:51,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isfinite_float [2018-11-18 12:48:51,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_logf [2018-11-18 12:48:51,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:48:51,815 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2018-11-18 12:48:51,815 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-18 12:48:51,816 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 12:48:51,816 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 12:48:51,833 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || x == \old(x) [2018-11-18 12:48:51,833 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || ((\exists __ieee754_logf_~ix~1 : bv32 :: ~fp~LONGDOUBLE(__ieee754_logf_~ix~1[31:31], __ieee754_logf_~ix~1[30:23], __ieee754_logf_~ix~1[22:0]) == \old(x) && !~bvslt32(__ieee754_logf_~ix~1, 0bv32)) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == \old(x)) [2018-11-18 12:48:51,833 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || (\exists __ieee754_logf_~ix~1 : bv32 :: ~fp~LONGDOUBLE(__ieee754_logf_~ix~1[31:31], __ieee754_logf_~ix~1[30:23], __ieee754_logf_~ix~1[22:0]) == \old(x) && !~bvslt32(__ieee754_logf_~ix~1, 0bv32)) [2018-11-18 12:48:51,858 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a5ebcbaa-65d7-4d59-935d-e81cd3ff3437/bin-2019/utaipan/witness.graphml [2018-11-18 12:48:51,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:48:51,859 INFO L168 Benchmark]: Toolchain (without parser) took 33161.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 948.7 MB in the beginning and 908.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 191.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,860 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:48:51,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.37 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 932.5 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,861 INFO L168 Benchmark]: Boogie Preprocessor took 84.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -219.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,861 INFO L168 Benchmark]: RCFGBuilder took 10888.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,862 INFO L168 Benchmark]: TraceAbstraction took 21881.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.4 MB in the end (delta: 193.3 MB). Peak memory consumption was 193.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,863 INFO L168 Benchmark]: Witness Printer took 56.05 ms. Allocated memory is still 1.2 GB. Free memory was 915.4 MB in the beginning and 908.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:48:51,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.37 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 932.5 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -219.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 10888.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21881.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.4 MB in the end (delta: 193.3 MB). Peak memory consumption was 193.3 MB. Max. memory is 11.5 GB. * Witness Printer took 56.05 ms. Allocated memory is still 1.2 GB. Free memory was 915.4 MB in the beginning and 908.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 140]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant [2018-11-18 12:48:51,869 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,869 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,869 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,869 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,869 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,870 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,870 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,870 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,870 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,870 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || (\exists __ieee754_logf_~ix~1 : bv32 :: ~fp~LONGDOUBLE(__ieee754_logf_~ix~1[31:31], __ieee754_logf_~ix~1[30:23], __ieee754_logf_~ix~1[22:0]) == \old(x) && !~bvslt32(__ieee754_logf_~ix~1, 0bv32)) - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant [2018-11-18 12:48:51,871 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,871 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || x == \old(x) - InvariantResult [Line: 52]: Loop Invariant [2018-11-18 12:48:51,871 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,872 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,872 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,872 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,872 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,872 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 12:48:51,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] [2018-11-18 12:48:51,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[__ieee754_logf_~ix~1,QUANTIFIED] Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE()) == zero_log) || ((\exists __ieee754_logf_~ix~1 : bv32 :: ~fp~LONGDOUBLE(__ieee754_logf_~ix~1[31:31], __ieee754_logf_~ix~1[30:23], __ieee754_logf_~ix~1[22:0]) == \old(x) && !~bvslt32(__ieee754_logf_~ix~1, 0bv32)) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == \old(x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 53 locations, 1 error locations. SAFE Result, 21.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 19.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 260 SDtfs, 98 SDslu, 641 SDs, 0 SdLazy, 169 SolverSat, 12 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 26 PreInvPairs, 33 NumberOfFragments, 127 HoareAnnotationTreeSize, 26 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 136 ConstructedInterpolants, 9 QuantifiedInterpolants, 15322 SizeOfPredicates, 12 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...