./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a_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_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 887f0640b1b5afa2d39789f5b16e950cef616033 ................................................................................................................................................................................................................................................................................................................ 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_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 887f0640b1b5afa2d39789f5b16e950cef616033 .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 22:26:19,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:26:19,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:26:19,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:26:19,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:26:19,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:26:19,954 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:26:19,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:26:19,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:26:19,956 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:26:19,957 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:26:19,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:26:19,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:26:19,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:26:19,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:26:19,959 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:26:19,960 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:26:19,961 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:26:19,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:26:19,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:26:19,964 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:26:19,965 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:26:19,966 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:26:19,966 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:26:19,967 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:26:19,967 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:26:19,968 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:26:19,968 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:26:19,969 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:26:19,970 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:26:19,970 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:26:19,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:26:19,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:26:19,971 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:26:19,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:26:19,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:26:19,972 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-01 22:26:19,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:26:19,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:26:19,983 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:26:19,983 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:26:19,983 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:26:19,983 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:26:19,983 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:26:19,983 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 22:26:19,983 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:26:19,984 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:26:19,984 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 22:26:19,984 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 22:26:19,984 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:26:19,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:26:19,984 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:26:19,985 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:26:19,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:26:19,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:26:19,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 22:26:19,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:26:19,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:26:19,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 22:26:19,987 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_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2018-12-01 22:26:20,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:26:20,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:26:20,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:26:20,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:26:20,022 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:26:20,022 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:20,062 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/2d94b113d/276a76004d744383b399a53d5a9037d8/FLAG83fa5e639 [2018-12-01 22:26:20,446 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:26:20,446 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:20,450 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/2d94b113d/276a76004d744383b399a53d5a9037d8/FLAG83fa5e639 [2018-12-01 22:26:20,458 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/2d94b113d/276a76004d744383b399a53d5a9037d8 [2018-12-01 22:26:20,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:26:20,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:26:20,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:26:20,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:26:20,464 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:26:20,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706fcb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20, skipping insertion in model container [2018-12-01 22:26:20,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:26:20,481 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:26:20,575 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:26:20,578 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:26:20,595 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:26:20,607 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:26:20,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20 WrapperNode [2018-12-01 22:26:20,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:26:20,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:26:20,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:26:20,608 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:26:20,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:26:20,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:26:20,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:26:20,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:26:20,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... [2018-12-01 22:26:20,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:26:20,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:26:20,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:26:20,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:26:20,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 [2018-12-01 22:26:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:26:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:26:20,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:26:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-01 22:26:20,711 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-01 22:26:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:26:20,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:26:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:26:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 22:26:20,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 22:26:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:26:20,833 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:26:20,834 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 22:26:20,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:20 BoogieIcfgContainer [2018-12-01 22:26:20,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:26:20,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:26:20,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:26:20,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:26:20,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:26:20" (1/3) ... [2018-12-01 22:26:20,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1f305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:26:20, skipping insertion in model container [2018-12-01 22:26:20,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:20" (2/3) ... [2018-12-01 22:26:20,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1f305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:26:20, skipping insertion in model container [2018-12-01 22:26:20,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:20" (3/3) ... [2018-12-01 22:26:20,839 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:20,847 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:26:20,851 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:26:20,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:26:20,884 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:26:20,884 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:26:20,884 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:26:20,884 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:26:20,884 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:26:20,884 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:26:20,884 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:26:20,884 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:26:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-01 22:26:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 22:26:20,898 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:26:20,898 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:26:20,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:26:20,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:26:20,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-01 22:26:20,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:26:20,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:26:20,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:26:20,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:26:20,931 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:26:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:26:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:26:20,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:26:20,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:26:20,978 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:26:20,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:26:20,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:26:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:26:20,989 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-01 22:26:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:26:21,001 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-01 22:26:21,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:26:21,002 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-01 22:26:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:26:21,006 INFO L225 Difference]: With dead ends: 56 [2018-12-01 22:26:21,006 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 22:26:21,008 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 [2018-12-01 22:26:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 22:26:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-01 22:26:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 22:26:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-01 22:26:21,029 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-01 22:26:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:26:21,029 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-01 22:26:21,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:26:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-01 22:26:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 22:26:21,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:26:21,030 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:26:21,030 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:26:21,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:26:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-01 22:26:21,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:26:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:26:21,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:26:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:26:21,031 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:26:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:26:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:26:21,069 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 22:26:21,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:26:21 BoogieIcfgContainer [2018-12-01 22:26:21,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:26:21,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:26:21,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:26:21,085 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:26:21,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:20" (3/4) ... [2018-12-01 22:26:21,087 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 22:26:21,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:26:21,088 INFO L168 Benchmark]: Toolchain (without parser) took 626.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:26:21,089 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:26:21,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.24 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:21,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 938.9 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:21,089 INFO L168 Benchmark]: Boogie Preprocessor took 51.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:21,090 INFO L168 Benchmark]: RCFGBuilder took 156.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:21,090 INFO L168 Benchmark]: TraceAbstraction took 249.98 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:21,091 INFO L168 Benchmark]: Witness Printer took 2.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:26:21,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.24 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 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 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 938.9 MB in the beginning and 936.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -175.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 156.06 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 249.98 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; VAL [x=0] [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=0] [L13] __uint32_t ix; VAL [\old(x)=0, x=0] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=0, \result=5, ix=12, x=5] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=5, x=0] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=5, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=5, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 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=32occurred 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, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 [2018-12-01 22:26:22,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:26:22,411 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:26:22,420 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:26:22,420 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:26:22,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:26:22,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:26:22,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:26:22,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:26:22,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:26:22,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:26:22,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:26:22,426 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:26:22,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:26:22,427 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:26:22,428 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:26:22,428 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:26:22,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:26:22,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:26:22,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:26:22,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:26:22,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:26:22,435 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:26:22,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:26:22,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:26:22,436 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:26:22,437 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:26:22,438 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:26:22,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:26:22,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:26:22,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:26:22,439 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:26:22,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:26:22,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:26:22,440 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:26:22,441 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:26:22,441 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-01 22:26:22,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:26:22,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:26:22,452 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:26:22,452 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:26:22,453 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:26:22,453 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:26:22,453 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:26:22,453 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:26:22,453 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:26:22,453 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:26:22,454 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:26:22,454 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:26:22,454 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:26:22,454 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:26:22,455 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:26:22,456 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:26:22,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:26:22,457 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:26:22,457 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:26:22,457 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:26:22,457 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-01 22:26:22,457 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:26:22,457 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 22:26:22,458 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 22:26:22,458 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_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2018-12-01 22:26:22,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:26:22,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:26:22,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:26:22,491 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:26:22,491 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:26:22,491 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:22,526 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/ad326ea10/5b7d29da327c4c99b672179cff631d5c/FLAGb957b420e [2018-12-01 22:26:22,855 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:26:22,855 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/sv-benchmarks/c/float-newlib/float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:22,859 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/ad326ea10/5b7d29da327c4c99b672179cff631d5c/FLAGb957b420e [2018-12-01 22:26:23,273 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/data/ad326ea10/5b7d29da327c4c99b672179cff631d5c [2018-12-01 22:26:23,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:26:23,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:26:23,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:26:23,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:26:23,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:26:23,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709629c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23, skipping insertion in model container [2018-12-01 22:26:23,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:26:23,296 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:26:23,390 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:26:23,393 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:26:23,406 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:26:23,421 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:26:23,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23 WrapperNode [2018-12-01 22:26:23,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:26:23,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:26:23,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:26:23,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:26:23,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:26:23,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:26:23,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:26:23,437 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:26:23,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... [2018-12-01 22:26:23,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:26:23,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:26:23,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:26:23,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:26:23,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 [2018-12-01 22:26:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:26:23,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:26:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-01 22:26:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:26:23,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:26:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:26:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-01 22:26:23,520 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-01 22:26:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 22:26:23,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:26:23,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:26:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-01 22:26:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 22:26:23,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 22:26:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 22:26:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:26:23,627 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:26:23,663 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:26:23,670 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:26:23,670 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 22:26:23,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:23 BoogieIcfgContainer [2018-12-01 22:26:23,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:26:23,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:26:23,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:26:23,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:26:23,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:26:23" (1/3) ... [2018-12-01 22:26:23,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c8808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:26:23, skipping insertion in model container [2018-12-01 22:26:23,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:26:23" (2/3) ... [2018-12-01 22:26:23,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c8808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:26:23, skipping insertion in model container [2018-12-01 22:26:23,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:23" (3/3) ... [2018-12-01 22:26:23,676 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a_true-unreach-call.c [2018-12-01 22:26:23,684 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:26:23,689 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:26:23,701 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:26:23,722 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:26:23,722 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:26:23,723 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:26:23,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:26:23,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:26:23,723 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:26:23,723 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:26:23,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:26:23,723 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:26:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-01 22:26:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 22:26:23,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:26:23,738 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:26:23,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:26:23,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:26:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1505277509, now seen corresponding path program 1 times [2018-12-01 22:26:23,744 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:26:23,745 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 [2018-12-01 22:26:23,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:26:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:26:23,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:26:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:26:23,792 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:26:23,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:26:23,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:26:23,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:26:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:26:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:26:23,811 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-01 22:26:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:26:23,823 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-12-01 22:26:23,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:26:23,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-01 22:26:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:26:23,828 INFO L225 Difference]: With dead ends: 56 [2018-12-01 22:26:23,828 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 22:26:23,830 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:26:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 22:26:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-01 22:26:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 22:26:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-01 22:26:23,852 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2018-12-01 22:26:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:26:23,852 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-01 22:26:23,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:26:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-01 22:26:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 22:26:23,853 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:26:23,853 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:26:23,853 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:26:23,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:26:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash -820328856, now seen corresponding path program 1 times [2018-12-01 22:26:23,854 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:26:23,854 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 [2018-12-01 22:26:23,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:26:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:26:23,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:26:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:26:24,022 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:26:24,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:26:24,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 22:26:24,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 22:26:24,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 22:26:24,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:26:24,035 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2018-12-01 22:26:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:26:24,250 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-12-01 22:26:24,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:26:24,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-01 22:26:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:26:24,251 INFO L225 Difference]: With dead ends: 31 [2018-12-01 22:26:24,251 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 22:26:24,251 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-01 22:26:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 22:26:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-01 22:26:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 22:26:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-12-01 22:26:24,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 19 [2018-12-01 22:26:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:26:24,255 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-12-01 22:26:24,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 22:26:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-12-01 22:26:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 22:26:24,255 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:26:24,255 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] [2018-12-01 22:26:24,256 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:26:24,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:26:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1040391693, now seen corresponding path program 1 times [2018-12-01 22:26:24,256 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:26:24,256 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/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 [2018-12-01 22:26:24,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:26:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:26:24,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:26:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:26:24,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:26:24,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:26:24,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-12-01 22:26:24,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 22:26:24,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 22:26:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-12-01 22:26:24,581 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 14 states. [2018-12-01 22:26:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:26:25,116 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2018-12-01 22:26:25,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-01 22:26:25,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-12-01 22:26:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:26:25,117 INFO L225 Difference]: With dead ends: 28 [2018-12-01 22:26:25,117 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 22:26:25,118 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2018-12-01 22:26:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 22:26:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 22:26:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 22:26:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 22:26:25,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-01 22:26:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:26:25,119 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:26:25,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 22:26:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 22:26:25,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 22:26:25,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 12 25) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 12 25) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 12 25) the Hoare annotation is: true [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2018-12-01 22:26:25,165 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 22:26:25,166 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 39 55) the Hoare annotation is: true [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 39 55) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L448 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-12-01 22:26:25,166 INFO L444 ceAbstractionStarter]: At program point L49-1(line 49) the Hoare annotation is: (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (_ +zero 8 24))))) [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point L49-2(line 49) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (= (_ +zero 8 24) main_~x~0) [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point L49-4(lines 49 52) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 39 55) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L444 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 27 37) no Hoare annotation was computed. [2018-12-01 22:26:25,167 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 27 37) the Hoare annotation is: true [2018-12-01 22:26:25,167 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 27 37) no Hoare annotation was computed. [2018-12-01 22:26:25,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:26:25 BoogieIcfgContainer [2018-12-01 22:26:25,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:26:25,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:26:25,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:26:25,176 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:26:25,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:26:23" (3/4) ... [2018-12-01 22:26:25,178 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 22:26:25,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 22:26:25,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-12-01 22:26:25,182 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 22:26:25,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-01 22:26:25,185 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-01 22:26:25,185 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-01 22:26:25,185 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 22:26:25,202 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-01 22:26:25,202 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-01 22:26:25,212 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d35ead9c-029c-4df4-ab2d-3662b6051b84/bin-2019/utaipan/witness.graphml [2018-12-01 22:26:25,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:26:25,213 INFO L168 Benchmark]: Toolchain (without parser) took 1938.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.4 MB in the beginning and 933.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 140.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:25,214 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. [2018-12-01 22:26:25,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.20 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. [2018-12-01 22:26:25,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.16 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. [2018-12-01 22:26:25,215 INFO L168 Benchmark]: Boogie Preprocessor took 18.91 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:26:25,215 INFO L168 Benchmark]: RCFGBuilder took 215.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -166.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:25,215 INFO L168 Benchmark]: TraceAbstraction took 1503.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.8 MB in the end (delta: 154.4 MB). Peak memory consumption was 154.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:25,215 INFO L168 Benchmark]: Witness Printer took 37.12 ms. Allocated memory is still 1.2 GB. Free memory was 939.8 MB in the beginning and 933.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:26:25,217 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 145.20 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 15.16 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 18.91 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 215.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -166.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1503.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.8 MB in the end (delta: 154.4 MB). Peak memory consumption was 154.4 MB. Max. memory is 11.5 GB. * Witness Printer took 37.12 ms. Allocated memory is still 1.2 GB. Free memory was 939.8 MB in the beginning and 933.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 30]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 27 SDslu, 277 SDs, 0 SdLazy, 158 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 46 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 14 QuantifiedInterpolants, 11692 SizeOfPredicates, 13 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...