./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-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_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ............................................................................................................................................................................................................................................................................................................................................................................... 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_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:18:23,441 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:18:23,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:18:23,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:18:23,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:18:23,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:18:23,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:18:23,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:18:23,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:18:23,454 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:18:23,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:18:23,455 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:18:23,456 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:18:23,457 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:18:23,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:18:23,458 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:18:23,459 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:18:23,460 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:18:23,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:18:23,462 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:18:23,463 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:18:23,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:18:23,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:18:23,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:18:23,466 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:18:23,466 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:18:23,467 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:18:23,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:18:23,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:18:23,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:18:23,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:18:23,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:18:23,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:18:23,470 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:18:23,470 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:18:23,471 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:18:23,471 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:18:23,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:18:23,481 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:18:23,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:18:23,482 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:18:23,482 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:18:23,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:18:23,483 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:18:23,483 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:18:23,483 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:18:23,483 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:18:23,484 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:18:23,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:18:23,486 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:18:23,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:18:23,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:18:23,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:18:23,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:18:23,488 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:18:23,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:18:23,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:18:23,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:18:23,488 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_129c4ca1-234c-408f-9781-c6473692682a/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-18 16:18:23,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:18:23,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:18:23,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:18:23,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:18:23,525 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:18:23,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:23,570 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/8b9547ecd/a452eb29fb0b48f787befd1aae3c3d2a/FLAGd87a76c0c [2018-11-18 16:18:23,969 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:18:23,969 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:23,974 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/8b9547ecd/a452eb29fb0b48f787befd1aae3c3d2a/FLAGd87a76c0c [2018-11-18 16:18:23,983 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/8b9547ecd/a452eb29fb0b48f787befd1aae3c3d2a [2018-11-18 16:18:23,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:18:23,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:18:23,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:18:23,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:18:23,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:18:23,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:23" (1/1) ... [2018-11-18 16:18:23,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ae4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:23, skipping insertion in model container [2018-11-18 16:18:23,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:23" (1/1) ... [2018-11-18 16:18:24,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:18:24,021 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:18:24,161 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:18:24,167 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:18:24,185 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:18:24,196 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:18:24,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24 WrapperNode [2018-11-18 16:18:24,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:18:24,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:18:24,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:18:24,197 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:18:24,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:18:24,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:18:24,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:18:24,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:18:24,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... [2018-11-18 16:18:24,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:18:24,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:18:24,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:18:24,275 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:18:24,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:18:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-18 16:18:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 16:18:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:18:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:18:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:18:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:18:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:18:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:18:24,519 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:18:24,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:24 BoogieIcfgContainer [2018-11-18 16:18:24,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:18:24,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:18:24,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:18:24,523 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:18:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:18:23" (1/3) ... [2018-11-18 16:18:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:24, skipping insertion in model container [2018-11-18 16:18:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:24" (2/3) ... [2018-11-18 16:18:24,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:24, skipping insertion in model container [2018-11-18 16:18:24,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:24" (3/3) ... [2018-11-18 16:18:24,526 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:24,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:18:24,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:18:24,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:18:24,566 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:18:24,566 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:18:24,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:18:24,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:18:24,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:18:24,566 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:18:24,566 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:18:24,566 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:18:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 16:18:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 16:18:24,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:24,580 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] [2018-11-18 16:18:24,581 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:24,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2124539892, now seen corresponding path program 1 times [2018-11-18 16:18:24,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:18:24,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,615 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:18:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:18:24,678 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 16:18:24,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:18:24,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:18:24,680 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:18:24,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:18:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:18:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:18:24,693 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-18 16:18:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:18:24,709 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-18 16:18:24,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:18:24,711 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 16:18:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:18:24,719 INFO L225 Difference]: With dead ends: 88 [2018-11-18 16:18:24,719 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 16:18:24,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:18:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 16:18:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 16:18:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 16:18:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-18 16:18:24,752 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-18 16:18:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:18:24,752 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-18 16:18:24,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:18:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-18 16:18:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:18:24,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:24,754 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] [2018-11-18 16:18:24,754 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:24,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1268742027, now seen corresponding path program 1 times [2018-11-18 16:18:24,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:18:24,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:24,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,755 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:18:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:18:24,815 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 16:18:24,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:18:24,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:18:24,815 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:18:24,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:18:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:18:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:18:24,817 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states. [2018-11-18 16:18:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:18:24,845 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-18 16:18:24,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:18:24,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-18 16:18:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:18:24,846 INFO L225 Difference]: With dead ends: 47 [2018-11-18 16:18:24,846 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 16:18:24,847 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 16:18:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 16:18:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 16:18:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 16:18:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-18 16:18:24,851 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2018-11-18 16:18:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:18:24,853 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-18 16:18:24,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:18:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-18 16:18:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 16:18:24,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:24,854 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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 16:18:24,854 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:24,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1476537099, now seen corresponding path program 1 times [2018-11-18 16:18:24,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:18:24,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:24,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:18:24,856 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:18:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:18:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:18:24,906 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:18:24,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:18:24 BoogieIcfgContainer [2018-11-18 16:18:24,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:18:24,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:18:24,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:18:24,929 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:18:24,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:24" (3/4) ... [2018-11-18 16:18:24,931 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:18:24,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:18:24,932 INFO L168 Benchmark]: Toolchain (without parser) took 945.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -131.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:24,933 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:18:24,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.48 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:24,934 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.50 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:18:24,934 INFO L168 Benchmark]: Boogie Preprocessor took 60.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:24,934 INFO L168 Benchmark]: RCFGBuilder took 245.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:24,935 INFO L168 Benchmark]: TraceAbstraction took 407.44 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:24,935 INFO L168 Benchmark]: Witness Printer took 2.77 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 16:18:24,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.48 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.50 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 407.44 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.77 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: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=11, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] FCALL float iptr; VAL [iptr={14:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=7, iptr={14:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=7, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (i0) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, one_modf=1, x=7] [L22] COND TRUE j0 < 23 VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L23] COND TRUE j0 < 0 VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L25] FCALL ieee_float_shape_type sf_u; [L26] FCALL sf_u.word = (i0 & 0x80000000) [L27] EXPR, FCALL sf_u.value [L27] FCALL (*iptr) = sf_u.value [L28] COND FALSE !(0) VAL [\old(x)=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L29] RET return x; VAL [\old(x)=7, \result=7, i0=3, iptr={14:0}, iptr={14:0}, j0=-1, one_modf=1, x=7] [L82] EXPR modf_float(x, &iptr) VAL [iptr={14:0}, modf_float(x, &iptr)=7, one_modf=1, x=7] [L82] float res = modf_float(x, &iptr); [L85] EXPR, FCALL \read(iptr) VAL [\read(iptr)=13, iptr={14:0}, one_modf=1, res=7, x=7] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=13, one_modf=1] [L73] RET return x != x; VAL [\old(x)=13, \result=1, one_modf=1, x=13] [L85] EXPR isnan_float(iptr) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, one_modf=1, res=7, x=7] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=7, x=7] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=7, one_modf=1] [L73] RET return x != x; VAL [\old(x)=7, \result=0, one_modf=1, x=7] [L85] EXPR isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=7, x=7] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=13, iptr={14:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=7, x=7] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={14:0}, one_modf=1, res=7, x=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 16:18:26,337 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:18:26,338 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:18:26,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:18:26,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:18:26,346 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:18:26,347 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:18:26,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:18:26,349 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:18:26,349 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:18:26,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:18:26,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:18:26,351 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:18:26,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:18:26,352 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:18:26,353 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:18:26,353 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:18:26,355 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:18:26,356 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:18:26,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:18:26,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:18:26,358 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:18:26,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:18:26,360 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:18:26,360 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:18:26,361 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:18:26,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:18:26,362 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:18:26,363 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:18:26,363 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:18:26,363 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:18:26,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:18:26,364 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:18:26,364 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:18:26,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:18:26,365 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:18:26,366 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:18:26,376 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:18:26,376 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:18:26,377 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:18:26,377 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:18:26,377 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:18:26,377 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:18:26,377 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:18:26,377 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:18:26,378 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:18:26,378 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:18:26,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:18:26,378 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:18:26,378 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:18:26,379 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:18:26,380 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:18:26,380 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:18:26,380 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:18:26,380 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:18:26,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:18:26,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:18:26,381 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:18:26,381 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:18:26,382 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:18:26,382 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:18:26,382 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_129c4ca1-234c-408f-9781-c6473692682a/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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-18 16:18:26,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:18:26,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:18:26,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:18:26,424 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:18:26,424 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:18:26,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:26,469 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/c7f81dbe3/0612c7b0800f48c3b461b7d19b4796de/FLAG6a2846581 [2018-11-18 16:18:26,790 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:18:26,791 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/sv-benchmarks/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:26,795 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/c7f81dbe3/0612c7b0800f48c3b461b7d19b4796de/FLAG6a2846581 [2018-11-18 16:18:26,803 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/data/c7f81dbe3/0612c7b0800f48c3b461b7d19b4796de [2018-11-18 16:18:26,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:18:26,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:18:26,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:18:26,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:18:26,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:18:26,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:26" (1/1) ... [2018-11-18 16:18:26,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b68c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:26, skipping insertion in model container [2018-11-18 16:18:26,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:26" (1/1) ... [2018-11-18 16:18:26,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:18:26,836 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:18:26,970 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:18:26,978 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:18:26,999 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:18:27,009 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:18:27,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27 WrapperNode [2018-11-18 16:18:27,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:18:27,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:18:27,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:18:27,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:18:27,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:18:27,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:18:27,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:18:27,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:18:27,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... [2018-11-18 16:18:27,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:18:27,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:18:27,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:18:27,059 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:18:27,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:18:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:18:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 16:18:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-18 16:18:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-18 16:18:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 16:18:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 16:18:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:18:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:18:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 16:18:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:18:27,277 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 16:18:27,326 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 16:18:27,398 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 16:18:27,408 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 16:18:27,427 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 16:18:27,439 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:18:27,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27 BoogieIcfgContainer [2018-11-18 16:18:27,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:18:27,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:18:27,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:18:27,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:18:27,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:18:26" (1/3) ... [2018-11-18 16:18:27,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5153c2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2018-11-18 16:18:27,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:27" (2/3) ... [2018-11-18 16:18:27,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5153c2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2018-11-18 16:18:27,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27" (3/3) ... [2018-11-18 16:18:27,443 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-18 16:18:27,449 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:18:27,454 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:18:27,462 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:18:27,481 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:18:27,481 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:18:27,481 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:18:27,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:18:27,482 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:18:27,482 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:18:27,482 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:18:27,482 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:18:27,482 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:18:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 16:18:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 16:18:27,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:27,496 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] [2018-11-18 16:18:27,498 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:27,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2124539892, now seen corresponding path program 1 times [2018-11-18 16:18:27,503 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:18:27,504 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:27,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:18:27,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:18:27,623 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 16:18:27,623 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:18:27,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:18:27,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:18:27,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:18:27,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:18:27,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:18:27,645 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-18 16:18:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:18:27,664 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-18 16:18:27,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:18:27,664 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 16:18:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:18:27,670 INFO L225 Difference]: With dead ends: 88 [2018-11-18 16:18:27,670 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 16:18:27,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 16:18:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 16:18:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 16:18:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 16:18:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-18 16:18:27,699 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-18 16:18:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:18:27,699 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-18 16:18:27,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:18:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-18 16:18:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:18:27,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:27,701 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] [2018-11-18 16:18:27,701 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:27,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1268742027, now seen corresponding path program 1 times [2018-11-18 16:18:27,702 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:18:27,702 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:27,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:18:27,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:18:27,884 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 16:18:27,885 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:18:27,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:18:27,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:18:27,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:18:27,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:18:27,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:18:27,898 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 7 states. [2018-11-18 16:18:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:18:28,420 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-11-18 16:18:28,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:18:28,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-18 16:18:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:18:28,422 INFO L225 Difference]: With dead ends: 60 [2018-11-18 16:18:28,422 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 16:18:28,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:18:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 16:18:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 16:18:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 16:18:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-18 16:18:28,428 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2018-11-18 16:18:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:18:28,429 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-18 16:18:28,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:18:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-18 16:18:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 16:18:28,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:28,430 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] [2018-11-18 16:18:28,430 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:28,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2081760611, now seen corresponding path program 1 times [2018-11-18 16:18:28,431 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:18:28,431 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:28,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:18:28,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:18:28,526 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 16:18:28,526 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:18:28,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:18:28,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:18:28,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:18:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:18:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:18:28,534 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2018-11-18 16:18:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:18:28,543 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-18 16:18:28,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:18:28,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-18 16:18:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:18:28,544 INFO L225 Difference]: With dead ends: 34 [2018-11-18 16:18:28,544 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 16:18:28,545 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 16:18:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 16:18:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 16:18:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 16:18:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 16:18:28,549 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-11-18 16:18:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:18:28,551 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 16:18:28,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:18:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 16:18:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 16:18:28,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:18:28,551 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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 16:18:28,552 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:18:28,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:18:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash -811113421, now seen corresponding path program 1 times [2018-11-18 16:18:28,552 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:18:28,552 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/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 16:18:28,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:18:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:18:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:18:28,794 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:18:28,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:18:28 BoogieIcfgContainer [2018-11-18 16:18:28,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:18:28,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:18:28,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:18:28,832 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:18:28,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27" (3/4) ... [2018-11-18 16:18:28,834 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:18:28,880 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_129c4ca1-234c-408f-9781-c6473692682a/bin-2019/utaipan/witness.graphml [2018-11-18 16:18:28,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:18:28,881 INFO L168 Benchmark]: Toolchain (without parser) took 2076.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.8 MB in the beginning and 998.0 MB in the end (delta: -54.2 MB). Peak memory consumption was 92.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:28,882 INFO L168 Benchmark]: CDTParser took 0.16 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 16:18:28,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 927.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:28,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.90 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:18:28,883 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:18:28,883 INFO L168 Benchmark]: RCFGBuilder took 380.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:28,884 INFO L168 Benchmark]: TraceAbstraction took 1391.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:28,884 INFO L168 Benchmark]: Witness Printer took 49.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:18:28,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 203.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.8 MB in the beginning and 927.7 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 16.90 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.77 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 380.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1391.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. * Witness Printer took 49.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=0.000000000000000000000000000000000000000000007006492321624085, one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] FCALL float iptr; VAL [iptr={2:0}, one_modf=1.0, x=NaN] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=NaN, iptr={2:0}, one_modf=1.0] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=NaN, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (i0) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] FCALL *iptr = x * one_modf VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L59] FCALL ieee_float_shape_type gf_u; [L60] FCALL gf_u.value = (x) [L61] EXPR, FCALL gf_u.word [L61] (ix) = gf_u.word [L62] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=NaN] [L64] FCALL ieee_float_shape_type sf_u; [L65] FCALL sf_u.word = (ix & 0x80000000) [L66] EXPR, FCALL sf_u.value [L66] (x) = sf_u.value [L67] COND FALSE !(0) VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L68] RET return x; VAL [\old(x)=NaN, \result=0.0, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L82] EXPR modf_float(x, &iptr) VAL [iptr={2:0}, modf_float(x, &iptr)=0.0, one_modf=1.0, x=NaN] [L82] float res = modf_float(x, &iptr); [L85] EXPR, FCALL \read(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=NaN, one_modf=1.0] [L73] RET return x != x; VAL [\old(x)=NaN, \result=1, one_modf=1.0, x=NaN] [L85] EXPR isnan_float(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=0.0, one_modf=1.0] [L73] RET return x != x; VAL [\old(x)=0.0, \result=0, one_modf=1.0, x=0.0] [L85] EXPR isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 87 SDslu, 137 SDs, 0 SdLazy, 53 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 7 QuantifiedInterpolants, 6064 SizeOfPredicates, 4 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...