./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 93969ab48cbc6136b5ad0701aa11c46dc35b2390 ................................................................................................................................................................................................................................................................................................................ 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_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 93969ab48cbc6136b5ad0701aa11c46dc35b2390 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 23:11:53,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:11:53,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:11:53,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:11:53,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:11:53,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:11:53,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:11:53,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:11:53,983 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:11:53,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:11:53,984 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:11:53,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:11:53,984 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:11:53,985 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:11:53,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:11:53,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:11:53,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:11:53,987 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:11:53,988 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:11:53,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:11:53,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:11:53,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:11:53,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:11:53,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:11:53,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:11:53,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:11:53,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:11:53,994 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:11:53,994 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:11:53,995 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:11:53,995 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:11:53,995 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:11:53,996 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:11:53,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:11:53,996 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:11:53,997 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:11:53,997 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 23:11:54,004 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:11:54,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:11:54,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:11:54,005 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:11:54,005 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 23:11:54,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 23:11:54,005 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 23:11:54,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 23:11:54,005 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 23:11:54,006 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 23:11:54,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 23:11:54,006 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 23:11:54,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 23:11:54,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:11:54,006 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 23:11:54,007 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 23:11:54,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:11:54,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:11:54,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 23:11:54,009 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 23:11:54,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:11:54,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 23:11:54,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 23:11:54,009 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_16249425-5855-4b75-8ecf-086491b52f91/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 -> 93969ab48cbc6136b5ad0701aa11c46dc35b2390 [2018-12-02 23:11:54,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:11:54,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:11:54,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:11:54,039 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:11:54,040 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:11:54,040 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:54,078 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/265346a88/9a67d49846b14cfb91f08aad4ecc857d/FLAGf8e03fd37 [2018-12-02 23:11:54,563 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:11:54,563 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:54,567 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/265346a88/9a67d49846b14cfb91f08aad4ecc857d/FLAGf8e03fd37 [2018-12-02 23:11:55,064 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/265346a88/9a67d49846b14cfb91f08aad4ecc857d [2018-12-02 23:11:55,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:11:55,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 23:11:55,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:11:55,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:11:55,070 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:11:55,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf82b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55, skipping insertion in model container [2018-12-02 23:11:55,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:11:55,095 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:11:55,193 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:11:55,195 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:11:55,211 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:11:55,223 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:11:55,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55 WrapperNode [2018-12-02 23:11:55,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:11:55,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 23:11:55,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 23:11:55,224 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 23:11:55,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 23:11:55,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:11:55,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:11:55,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:11:55,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... [2018-12-02 23:11:55,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:11:55,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:11:55,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:11:55,289 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:11:55,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:11:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-02 23:11:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 23:11:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:11:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-12-02 23:11:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:11:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:11:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 23:11:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 23:11:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 23:11:55,477 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:11:55,478 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 23:11:55,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:55 BoogieIcfgContainer [2018-12-02 23:11:55,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:11:55,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:11:55,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:11:55,480 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:11:55,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:11:55" (1/3) ... [2018-12-02 23:11:55,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30046d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:11:55, skipping insertion in model container [2018-12-02 23:11:55,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:55" (2/3) ... [2018-12-02 23:11:55,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30046d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:11:55, skipping insertion in model container [2018-12-02 23:11:55,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:55" (3/3) ... [2018-12-02 23:11:55,482 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:55,488 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:11:55,493 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 23:11:55,501 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 23:11:55,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:11:55,519 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 23:11:55,519 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:11:55,519 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:11:55,519 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:11:55,519 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:11:55,519 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:11:55,519 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:11:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-02 23:11:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 23:11:55,535 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:11:55,535 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:11:55,537 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:11:55,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:11:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-12-02 23:11:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 23:11:55,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:11:55,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:11:55,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:11:55,576 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 23:11:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:11:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:11:55,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:11:55,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:11:55,623 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 23:11:55,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 23:11:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 23:11:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 23:11:55,634 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-02 23:11:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:11:55,647 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-02 23:11:55,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 23:11:55,648 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-02 23:11:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:11:55,654 INFO L225 Difference]: With dead ends: 78 [2018-12-02 23:11:55,654 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 23:11:55,656 INFO L631 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 [2018-12-02 23:11:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 23:11:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 23:11:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 23:11:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-02 23:11:55,678 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-02 23:11:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:11:55,679 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-02 23:11:55,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 23:11:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-02 23:11:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 23:11:55,679 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:11:55,679 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:11:55,679 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:11:55,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:11:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-12-02 23:11:55,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 23:11:55,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:11:55,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:11:55,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:11:55,681 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 23:11:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:11:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:11:55,734 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:11:55,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:11:55 BoogieIcfgContainer [2018-12-02 23:11:55,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:11:55,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:11:55,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:11:55,752 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:11:55,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:55" (3/4) ... [2018-12-02 23:11:55,755 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 23:11:55,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:11:55,755 INFO L168 Benchmark]: Toolchain (without parser) took 689.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 961.4 MB in the beginning and 1.0 GB in the end (delta: -77.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,756 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:11:55,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.31 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,757 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,758 INFO L168 Benchmark]: RCFGBuilder took 189.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,758 INFO L168 Benchmark]: TraceAbstraction took 273.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2018-12-02 23:11:55,758 INFO L168 Benchmark]: Witness Printer took 2.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:11:55,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.31 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 189.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 273.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=6442450947, huge_floor=1000000000000000000000000000000] [L75] float x = -0.0f; VAL [huge_floor=1000000000000000000000000000000] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000, x=6442450952] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450952] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450952] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450952] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=6442450946, huge_floor=1000000000000000000000000000000, x=6442450952] [L76] float res = floor_float(x); [L79] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_floor=1000000000000000000000000000000, res=6442450946, res == -0.0f && __signbit_float(res) == 1=0, x=6442450952] [L79] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=6442450946, x=6442450952] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 23:11:57,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:11:57,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:11:57,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:11:57,089 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:11:57,090 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:11:57,091 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:11:57,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:11:57,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:11:57,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:11:57,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:11:57,093 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:11:57,094 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:11:57,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:11:57,095 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:11:57,095 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:11:57,096 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:11:57,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:11:57,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:11:57,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:11:57,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:11:57,099 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:11:57,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:11:57,101 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:11:57,101 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:11:57,101 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:11:57,102 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:11:57,102 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:11:57,103 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:11:57,103 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:11:57,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:11:57,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:11:57,104 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:11:57,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:11:57,105 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:11:57,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:11:57,105 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 23:11:57,112 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:11:57,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:11:57,113 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:11:57,113 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:11:57,113 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 23:11:57,113 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 23:11:57,114 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 23:11:57,114 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 23:11:57,114 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 23:11:57,114 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 23:11:57,114 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:11:57,114 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:11:57,115 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 23:11:57,116 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:11:57,116 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:11:57,116 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:11:57,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 23:11:57,117 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 23:11:57,117 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:11:57,117 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 23:11:57,117 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 23:11:57,117 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_16249425-5855-4b75-8ecf-086491b52f91/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 -> 93969ab48cbc6136b5ad0701aa11c46dc35b2390 [2018-12-02 23:11:57,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:11:57,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:11:57,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:11:57,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:11:57,147 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:11:57,147 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:57,184 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/7a544be6e/bfc53b8e74ac48de96952a2683a91dae/FLAG0d8d23490 [2018-12-02 23:11:57,643 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:11:57,643 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/sv-benchmarks/c/float-newlib/float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:57,648 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/7a544be6e/bfc53b8e74ac48de96952a2683a91dae/FLAG0d8d23490 [2018-12-02 23:11:57,656 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/data/7a544be6e/bfc53b8e74ac48de96952a2683a91dae [2018-12-02 23:11:57,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:11:57,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 23:11:57,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:11:57,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:11:57,662 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:11:57,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c19bd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57, skipping insertion in model container [2018-12-02 23:11:57,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:11:57,686 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:11:57,794 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:11:57,797 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:11:57,814 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:11:57,829 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:11:57,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57 WrapperNode [2018-12-02 23:11:57,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:11:57,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 23:11:57,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 23:11:57,830 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 23:11:57,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 23:11:57,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:11:57,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:11:57,846 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:11:57,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... [2018-12-02 23:11:57,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:11:57,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:11:57,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:11:57,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:11:57,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:11:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:11:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:11:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 23:11:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 23:11:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-12-02 23:11:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-12-02 23:11:57,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:11:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:11:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 23:11:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 23:11:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 23:11:58,025 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 23:11:58,325 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 23:11:58,330 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:11:58,330 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 23:11:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:58 BoogieIcfgContainer [2018-12-02 23:11:58,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:11:58,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:11:58,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:11:58,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:11:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:11:57" (1/3) ... [2018-12-02 23:11:58,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac6cb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:11:58, skipping insertion in model container [2018-12-02 23:11:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:11:57" (2/3) ... [2018-12-02 23:11:58,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac6cb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:11:58, skipping insertion in model container [2018-12-02 23:11:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:58" (3/3) ... [2018-12-02 23:11:58,334 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c_true-unreach-call.c [2018-12-02 23:11:58,340 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:11:58,344 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 23:11:58,353 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 23:11:58,370 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 23:11:58,370 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:11:58,370 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 23:11:58,370 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:11:58,370 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:11:58,371 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:11:58,371 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:11:58,371 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:11:58,371 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:11:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-02 23:11:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 23:11:58,384 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:11:58,384 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:11:58,385 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:11:58,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:11:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-12-02 23:11:58,391 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:11:58,391 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:11:58,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:11:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:11:58,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:11:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:11:58,455 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:11:58,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:11:58,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 23:11:58,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 23:11:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 23:11:58,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 23:11:58,474 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-02 23:11:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:11:58,487 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-02 23:11:58,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 23:11:58,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-02 23:11:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:11:58,496 INFO L225 Difference]: With dead ends: 78 [2018-12-02 23:11:58,497 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 23:11:58,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 23:11:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 23:11:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 23:11:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 23:11:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-02 23:11:58,523 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-02 23:11:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:11:58,524 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-02 23:11:58,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 23:11:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-02 23:11:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 23:11:58,524 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:11:58,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:11:58,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:11:58,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:11:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-12-02 23:11:58,525 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:11:58,525 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:11:58,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:11:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:11:58,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:11:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:11:58,673 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:11:58,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:11:58,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 23:11:58,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 23:11:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 23:11:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 23:11:58,687 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-12-02 23:11:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:11:59,557 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-12-02 23:11:59,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 23:11:59,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-02 23:11:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:11:59,559 INFO L225 Difference]: With dead ends: 60 [2018-12-02 23:11:59,559 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 23:11:59,560 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-02 23:11:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 23:11:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-02 23:11:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 23:11:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-12-02 23:11:59,564 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-12-02 23:11:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:11:59,564 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-12-02 23:11:59,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 23:11:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-02 23:11:59,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 23:11:59,565 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:11:59,565 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:11:59,565 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:11:59,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:11:59,565 INFO L82 PathProgramCache]: Analyzing trace with hash -568234905, now seen corresponding path program 1 times [2018-12-02 23:11:59,566 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:11:59,566 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:11:59,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:11:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:11:59,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:11:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:11:59,673 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:11:59,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:11:59,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 23:11:59,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 23:11:59,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 23:11:59,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 23:11:59,680 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-12-02 23:12:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:00,328 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-12-02 23:12:00,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 23:12:00,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-02 23:12:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:00,329 INFO L225 Difference]: With dead ends: 67 [2018-12-02 23:12:00,329 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 23:12:00,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-02 23:12:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 23:12:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-02 23:12:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 23:12:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-02 23:12:00,332 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-12-02 23:12:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:00,333 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-02 23:12:00,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 23:12:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-02 23:12:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 23:12:00,333 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:12:00,333 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:12:00,334 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:12:00,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:12:00,334 INFO L82 PathProgramCache]: Analyzing trace with hash 13684055, now seen corresponding path program 1 times [2018-12-02 23:12:00,334 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:12:00,334 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/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 [2018-12-02 23:12:00,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:12:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:12:00,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:12:01,231 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-02 23:12:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:12:01,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:12:01,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:12:01,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 23:12:01,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 23:12:01,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 23:12:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 23:12:01,247 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-12-02 23:12:01,983 WARN L180 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-02 23:12:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:02,334 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-12-02 23:12:02,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 23:12:02,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-02 23:12:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:02,339 INFO L225 Difference]: With dead ends: 52 [2018-12-02 23:12:02,339 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:12:02,339 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 23:12:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:12:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 23:12:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 23:12:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-02 23:12:02,343 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-12-02 23:12:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:02,343 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-02 23:12:02,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 23:12:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-02 23:12:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 23:12:02,344 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:12:02,344 INFO L402 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] [2018-12-02 23:12:02,344 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:12:02,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:12:02,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2137668883, now seen corresponding path program 1 times [2018-12-02 23:12:02,344 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:12:02,344 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 23:12:02,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:12:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:12:02,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:12:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:12:02,437 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:12:02,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:12:02,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 23:12:02,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 23:12:02,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 23:12:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 23:12:02,445 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2018-12-02 23:12:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:02,647 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-12-02 23:12:02,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 23:12:02,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-02 23:12:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:02,649 INFO L225 Difference]: With dead ends: 57 [2018-12-02 23:12:02,649 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 23:12:02,649 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-02 23:12:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 23:12:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-02 23:12:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 23:12:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-02 23:12:02,652 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-12-02 23:12:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:02,652 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-02 23:12:02,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 23:12:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-02 23:12:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 23:12:02,653 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:12:02,653 INFO L402 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] [2018-12-02 23:12:02,653 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:12:02,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:12:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1389654977, now seen corresponding path program 1 times [2018-12-02 23:12:02,653 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:12:02,653 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 23:12:02,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:12:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:12:02,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:12:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:12:02,773 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:12:02,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:12:02,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 23:12:02,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 23:12:02,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 23:12:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 23:12:02,781 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 7 states. [2018-12-02 23:12:03,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:03,037 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-12-02 23:12:03,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 23:12:03,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-12-02 23:12:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:03,038 INFO L225 Difference]: With dead ends: 52 [2018-12-02 23:12:03,039 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:12:03,039 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-02 23:12:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:12:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 23:12:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 23:12:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-12-02 23:12:03,041 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-12-02 23:12:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:03,042 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-12-02 23:12:03,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 23:12:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-12-02 23:12:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 23:12:03,042 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:12:03,042 INFO L402 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] [2018-12-02 23:12:03,042 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:12:03,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:12:03,043 INFO L82 PathProgramCache]: Analyzing trace with hash 996627967, now seen corresponding path program 1 times [2018-12-02 23:12:03,043 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:12:03,043 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-02 23:12:03,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:12:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:12:03,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:12:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:12:03,158 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:12:03,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:12:03,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 23:12:03,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 23:12:03,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 23:12:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 23:12:03,167 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2018-12-02 23:12:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:03,465 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2018-12-02 23:12:03,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 23:12:03,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-02 23:12:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:03,466 INFO L225 Difference]: With dead ends: 37 [2018-12-02 23:12:03,466 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 23:12:03,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-12-02 23:12:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 23:12:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 23:12:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 23:12:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2018-12-02 23:12:03,469 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 25 [2018-12-02 23:12:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:03,469 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2018-12-02 23:12:03,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 23:12:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2018-12-02 23:12:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 23:12:03,470 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:12:03,470 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:12:03,470 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:12:03,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:12:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 691655434, now seen corresponding path program 1 times [2018-12-02 23:12:03,470 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:12:03,470 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-02 23:12:03,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:12:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 23:12:03,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 23:12:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 23:12:03,711 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 23:12:03,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 23:12:03,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-02 23:12:03,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 23:12:03,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 23:12:03,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-02 23:12:03,722 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand 13 states. [2018-12-02 23:12:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 23:12:04,458 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2018-12-02 23:12:04,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 23:12:04,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-12-02 23:12:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 23:12:04,459 INFO L225 Difference]: With dead ends: 34 [2018-12-02 23:12:04,459 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 23:12:04,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-12-02 23:12:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 23:12:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 23:12:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 23:12:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 23:12:04,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-12-02 23:12:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 23:12:04,460 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 23:12:04,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 23:12:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 23:12:04,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 23:12:04,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-02 23:12:04,597 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= |floor_float_#in~x| floor_float_~x)) [2018-12-02 23:12:04,597 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point floor_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point floor_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L451 ceAbstractionStarter]: At program point floor_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0) [2018-12-02 23:12:04,598 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 85) the Hoare annotation is: true [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 85) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (or (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |main_#t~short8| (= main_~res~0 .cse0) (= main_~x~0 .cse0))) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0))) [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-12-02 23:12:04,598 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 85) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= main_~x~0 (fp.neg (_ +zero 8 24)))) [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (= |__signbit_float_#in~x| __signbit_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0))) [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-12-02 23:12:04,599 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-12-02 23:12:04,599 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-12-02 23:12:04,603 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,604 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,606 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,606 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,607 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,607 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,607 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,607 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:12:04 BoogieIcfgContainer [2018-12-02 23:12:04,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:12:04,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:12:04,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:12:04,609 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:12:04,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:11:58" (3/4) ... [2018-12-02 23:12:04,612 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 23:12:04,616 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 23:12:04,616 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_float [2018-12-02 23:12:04,616 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 23:12:04,616 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-02 23:12:04,619 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-02 23:12:04,619 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-02 23:12:04,619 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 23:12:04,635 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x [2018-12-02 23:12:04,635 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) [2018-12-02 23:12:04,651 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_16249425-5855-4b75-8ecf-086491b52f91/bin-2019/utaipan/witness.graphml [2018-12-02 23:12:04,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:12:04,651 INFO L168 Benchmark]: Toolchain (without parser) took 6993.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -228.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:12:04,652 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:12:04,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.24 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:12:04,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.14 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:12:04,652 INFO L168 Benchmark]: Boogie Preprocessor took 50.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-02 23:12:04,653 INFO L168 Benchmark]: RCFGBuilder took 433.35 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:12:04,653 INFO L168 Benchmark]: TraceAbstraction took 6277.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:12:04,653 INFO L168 Benchmark]: Witness Printer took 41.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:12:04,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.24 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.14 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 433.35 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6277.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 41.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2018-12-02 23:12:04,656 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) - InvariantResult [Line: 16]: Loop Invariant [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-02 23:12:04,657 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 6.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 244 SDtfs, 279 SDslu, 775 SDs, 0 SdLazy, 444 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 22 PreInvPairs, 25 NumberOfFragments, 68 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 179 ConstructedInterpolants, 26 QuantifiedInterpolants, 27208 SizeOfPredicates, 32 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...