./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_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_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 0fa375491f6ee23468a1ede5cb9608fff6035ced ......................................................................................................................................................................................................................................................................................................................... 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_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 0fa375491f6ee23468a1ede5cb9608fff6035ced ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:44:01,991 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:44:01,993 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:44:01,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:44:02,000 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:44:02,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:44:02,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:44:02,002 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:44:02,004 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:44:02,004 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:44:02,005 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:44:02,005 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:44:02,006 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:44:02,006 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:44:02,007 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:44:02,008 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:44:02,008 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:44:02,010 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:44:02,011 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:44:02,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:44:02,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:44:02,014 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:44:02,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:44:02,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:44:02,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:44:02,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:44:02,017 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:44:02,017 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:44:02,018 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:44:02,019 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:44:02,019 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:44:02,019 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:44:02,019 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:44:02,020 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:44:02,020 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:44:02,021 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:44:02,021 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-01 22:44:02,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:44:02,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:44:02,031 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:44:02,031 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:44:02,031 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:44:02,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 22:44:02,032 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 22:44:02,033 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:44:02,033 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:44:02,033 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:44:02,033 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:44:02,034 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:44:02,035 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:44:02,035 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:44:02,035 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:44:02,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:44:02,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:44:02,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:44:02,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:44:02,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 22:44:02,036 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_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 -> 0fa375491f6ee23468a1ede5cb9608fff6035ced [2018-12-01 22:44:02,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:44:02,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:44:02,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:44:02,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:44:02,069 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:44:02,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:02,103 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/c5c4de5d6/e6dadbba4891438489e9dd39c5defe07/FLAGc887504b1 [2018-12-01 22:44:02,510 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:44:02,510 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:02,514 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/c5c4de5d6/e6dadbba4891438489e9dd39c5defe07/FLAGc887504b1 [2018-12-01 22:44:02,522 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/c5c4de5d6/e6dadbba4891438489e9dd39c5defe07 [2018-12-01 22:44:02,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:44:02,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:44:02,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:44:02,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:44:02,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:44:02,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7962e2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02, skipping insertion in model container [2018-12-01 22:44:02,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:44:02,547 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:44:02,644 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:44:02,646 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:44:02,664 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:44:02,713 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:44:02,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02 WrapperNode [2018-12-01 22:44:02,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:44:02,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:44:02,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:44:02,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:44:02,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:44:02,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:44:02,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:44:02,734 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:44:02,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... [2018-12-01 22:44:02,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:44:02,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:44:02,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:44:02,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:44:02,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 22:44:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2018-12-01 22:44:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-01 22:44:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:44:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:44:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:44:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:44:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:44:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:44:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:44:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:44:02,977 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:44:02,978 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 22:44:02,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:02 BoogieIcfgContainer [2018-12-01 22:44:02,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:44:02,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:44:02,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:44:02,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:44:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:44:02" (1/3) ... [2018-12-01 22:44:02,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e3d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:44:02, skipping insertion in model container [2018-12-01 22:44:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:02" (2/3) ... [2018-12-01 22:44:02,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e3d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:44:02, skipping insertion in model container [2018-12-01 22:44:02,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:02" (3/3) ... [2018-12-01 22:44:02,983 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:02,989 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:44:02,993 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:44:03,004 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:44:03,023 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:44:03,023 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:44:03,023 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:44:03,023 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:44:03,023 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:44:03,023 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:44:03,023 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:44:03,023 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:44:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-01 22:44:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:44:03,037 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:03,038 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] [2018-12-01 22:44:03,039 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:03,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:03,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2018-12-01 22:44:03,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:44:03,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:44:03,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:03,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:44:03,073 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:44:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:03,121 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 22:44:03,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:03,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:44:03,122 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:44:03,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:44:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:44:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:44:03,135 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-12-01 22:44:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:03,148 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2018-12-01 22:44:03,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:44:03,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-01 22:44:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:03,155 INFO L225 Difference]: With dead ends: 86 [2018-12-01 22:44:03,156 INFO L226 Difference]: Without dead ends: 43 [2018-12-01 22:44:03,157 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 22:44:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-01 22:44:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-01 22:44:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 22:44:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2018-12-01 22:44:03,179 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2018-12-01 22:44:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:03,180 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2018-12-01 22:44:03,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:44:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2018-12-01 22:44:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-01 22:44:03,180 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:03,180 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] [2018-12-01 22:44:03,181 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:03,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:03,181 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2018-12-01 22:44:03,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:44:03,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:44:03,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:03,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:44:03,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:44:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:44:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:44:03,232 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 22:44:03,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:44:03 BoogieIcfgContainer [2018-12-01 22:44:03,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:44:03,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:44:03,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:44:03,250 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:44:03,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:02" (3/4) ... [2018-12-01 22:44:03,253 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 22:44:03,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:44:03,254 INFO L168 Benchmark]: Toolchain (without parser) took 729.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 958.8 MB in the beginning and 1.0 GB in the end (delta: -80.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:03,255 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:44:03,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 958.8 MB in the beginning and 1.1 GB in the end (delta: -137.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:03,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.07 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:03,256 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 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 22:44:03,256 INFO L168 Benchmark]: RCFGBuilder took 219.03 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:03,256 INFO L168 Benchmark]: TraceAbstraction took 271.58 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:03,256 INFO L168 Benchmark]: Witness Printer took 2.91 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. [2018-12-01 22:44:03,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 958.8 MB in the beginning and 1.1 GB in the end (delta: -137.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.07 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.76 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. * RCFGBuilder took 219.03 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 271.58 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.91 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: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=6442450948, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, x=6442450952] [L26] COND TRUE j0 < 20 VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=6442450952, \result=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2147483648, i1=3, j0=0, x=6442450952] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=6442450952, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=6442450952, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=6442450952] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=6442450952, x=6442450952] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=6442450952, x=6442450952] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 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=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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 22:44:04,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:44:04,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:44:04,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:44:04,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:44:04,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:44:04,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:44:04,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:44:04,645 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:44:04,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:44:04,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:44:04,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:44:04,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:44:04,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:44:04,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:44:04,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:44:04,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:44:04,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:44:04,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:44:04,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:44:04,654 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:44:04,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:44:04,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:44:04,657 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:44:04,657 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:44:04,658 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:44:04,658 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:44:04,659 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:44:04,659 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:44:04,660 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:44:04,660 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:44:04,661 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:44:04,661 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:44:04,661 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:44:04,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:44:04,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:44:04,662 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-01 22:44:04,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:44:04,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:44:04,674 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:44:04,674 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:44:04,674 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:44:04,674 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:44:04,674 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:44:04,674 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:44:04,674 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:44:04,675 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:44:04,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:44:04,675 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:44:04,675 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:44:04,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:44:04,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:44:04,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:44:04,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:44:04,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 22:44:04,677 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 22:44:04,677 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_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 -> 0fa375491f6ee23468a1ede5cb9608fff6035ced [2018-12-01 22:44:04,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:44:04,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:44:04,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:44:04,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:44:04,714 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:44:04,715 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:04,757 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/8c3046386/6cd1bca9613d4d27aab584ed39b8d5b6/FLAG006543cfa [2018-12-01 22:44:05,153 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:44:05,153 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/sv-benchmarks/c/float-newlib/double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:05,157 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/8c3046386/6cd1bca9613d4d27aab584ed39b8d5b6/FLAG006543cfa [2018-12-01 22:44:05,164 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/data/8c3046386/6cd1bca9613d4d27aab584ed39b8d5b6 [2018-12-01 22:44:05,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:44:05,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:44:05,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:44:05,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:44:05,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:44:05,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdf94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05, skipping insertion in model container [2018-12-01 22:44:05,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:44:05,190 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:44:05,300 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:44:05,303 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:44:05,322 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:44:05,340 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:44:05,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05 WrapperNode [2018-12-01 22:44:05,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:44:05,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:44:05,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:44:05,341 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:44:05,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:44:05,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:44:05,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:44:05,357 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:44:05,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... [2018-12-01 22:44:05,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:44:05,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:44:05,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:44:05,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:44:05,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 22:44:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2018-12-01 22:44:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2018-12-01 22:44:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-01 22:44:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-01 22:44:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-01 22:44:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:44:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:44:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:44:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 22:44:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:44:05,572 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:44:06,432 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:44:06,432 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 22:44:06,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:06 BoogieIcfgContainer [2018-12-01 22:44:06,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:44:06,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:44:06,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:44:06,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:44:06,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:44:05" (1/3) ... [2018-12-01 22:44:06,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:44:06, skipping insertion in model container [2018-12-01 22:44:06,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:44:05" (2/3) ... [2018-12-01 22:44:06,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:44:06, skipping insertion in model container [2018-12-01 22:44:06,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:06" (3/3) ... [2018-12-01 22:44:06,436 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051_true-unreach-call.c [2018-12-01 22:44:06,442 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:44:06,446 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:44:06,455 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:44:06,474 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:44:06,475 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:44:06,475 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:44:06,475 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:44:06,475 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:44:06,475 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:44:06,475 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:44:06,475 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:44:06,475 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:44:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-12-01 22:44:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 22:44:06,489 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:06,489 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] [2018-12-01 22:44:06,491 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:06,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1623509953, now seen corresponding path program 1 times [2018-12-01 22:44:06,496 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:44:06,497 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 22:44:06,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:06,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:44:06,553 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 22:44:06,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:44:06,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:06,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:44:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:44:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:44:06,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:44:06,572 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-12-01 22:44:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:06,584 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2018-12-01 22:44:06,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:44:06,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-01 22:44:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:06,591 INFO L225 Difference]: With dead ends: 84 [2018-12-01 22:44:06,591 INFO L226 Difference]: Without dead ends: 42 [2018-12-01 22:44:06,593 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:44:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-01 22:44:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-01 22:44:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-01 22:44:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2018-12-01 22:44:06,617 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 22 [2018-12-01 22:44:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:06,617 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2018-12-01 22:44:06,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:44:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2018-12-01 22:44:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:44:06,618 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:06,618 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] [2018-12-01 22:44:06,618 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:06,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash 510037476, now seen corresponding path program 1 times [2018-12-01 22:44:06,619 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:44:06,619 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 22:44:06,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:06,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:44:06,803 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 22:44:06,803 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:44:06,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:06,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 22:44:06,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 22:44:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 22:44:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:44:06,811 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2018-12-01 22:44:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:08,197 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-12-01 22:44:08,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:44:08,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-01 22:44:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:08,199 INFO L225 Difference]: With dead ends: 51 [2018-12-01 22:44:08,199 INFO L226 Difference]: Without dead ends: 44 [2018-12-01 22:44:08,200 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-01 22:44:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-01 22:44:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-12-01 22:44:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-01 22:44:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-12-01 22:44:08,206 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 23 [2018-12-01 22:44:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:08,206 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-12-01 22:44:08,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 22:44:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-12-01 22:44:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:44:08,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:08,207 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] [2018-12-01 22:44:08,207 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:08,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash 600907611, now seen corresponding path program 1 times [2018-12-01 22:44:08,208 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:44:08,208 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 22:44:08,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:08,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:44:09,034 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 22:44:09,035 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:44:09,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:09,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 22:44:09,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 22:44:09,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 22:44:09,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:44:09,043 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 9 states. [2018-12-01 22:44:10,648 WARN L180 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-01 22:44:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:11,978 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-12-01 22:44:11,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:44:11,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-01 22:44:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:11,980 INFO L225 Difference]: With dead ends: 49 [2018-12-01 22:44:11,980 INFO L226 Difference]: Without dead ends: 41 [2018-12-01 22:44:11,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-01 22:44:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-01 22:44:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-01 22:44:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-01 22:44:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-12-01 22:44:11,983 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 23 [2018-12-01 22:44:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:11,984 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-01 22:44:11,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 22:44:11,984 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2018-12-01 22:44:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-01 22:44:11,984 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:11,984 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] [2018-12-01 22:44:11,984 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:11,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1506102432, now seen corresponding path program 1 times [2018-12-01 22:44:11,985 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:44:11,985 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 [2018-12-01 22:44:11,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:12,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:44:12,186 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 22:44:12,186 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:44:12,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:12,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 22:44:12,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:44:12,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:44:12,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-01 22:44:12,198 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2018-12-01 22:44:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:14,237 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2018-12-01 22:44:14,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-01 22:44:14,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-01 22:44:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:14,239 INFO L225 Difference]: With dead ends: 67 [2018-12-01 22:44:14,239 INFO L226 Difference]: Without dead ends: 40 [2018-12-01 22:44:14,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-12-01 22:44:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-01 22:44:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2018-12-01 22:44:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:44:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-01 22:44:14,242 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2018-12-01 22:44:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:14,242 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-01 22:44:14,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:44:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-01 22:44:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 22:44:14,243 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:44:14,243 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 22:44:14,243 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:44:14,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:44:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2012573455, now seen corresponding path program 1 times [2018-12-01 22:44:14,243 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:44:14,243 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/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 [2018-12-01 22:44:14,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:44:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:44:14,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:44:14,488 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 22:44:14,488 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:44:14,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:44:14,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-01 22:44:14,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 22:44:14,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 22:44:14,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-01 22:44:14,497 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-12-01 22:44:14,902 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-12-01 22:44:15,643 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-12-01 22:44:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:44:15,767 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-12-01 22:44:15,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 22:44:15,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-01 22:44:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:44:15,767 INFO L225 Difference]: With dead ends: 40 [2018-12-01 22:44:15,767 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 22:44:15,767 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-12-01 22:44:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 22:44:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 22:44:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 22:44:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 22:44:15,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-01 22:44:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:44:15,768 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:44:15,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 22:44:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 22:44:15,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 22:44:15,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 22:44:15,826 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 34) no Hoare annotation was computed. [2018-12-01 22:44:15,826 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2018-12-01 22:44:15,826 INFO L448 ceAbstractionStarter]: For program point L56(lines 56 68) no Hoare annotation was computed. [2018-12-01 22:44:15,826 INFO L448 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2018-12-01 22:44:15,826 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 24) the Hoare annotation is: (= floor_double_~x |floor_double_#in~x|) [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 51) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point floor_doubleFINAL(lines 16 77) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 35) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 66) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 66) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point floor_doubleEXIT(lines 16 77) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L451 ceAbstractionStarter]: At program point floor_doubleENTRY(lines 16 77) the Hoare annotation is: true [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 42) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L70-1(lines 16 77) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L70-2(lines 70 75) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 63) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 34) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L62-2(lines 62 63) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L58(lines 58 65) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L54(lines 54 55) no Hoare annotation was computed. [2018-12-01 22:44:15,827 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 69) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point L47(lines 47 69) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 80) the Hoare annotation is: true [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 80) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 80) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 22:44:15,828 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 82 98) the Hoare annotation is: true [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point L93(line 93) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 82 98) no Hoare annotation was computed. [2018-12-01 22:44:15,828 INFO L444 ceAbstractionStarter]: At program point L92(line 92) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~res~0 .cse0))) [2018-12-01 22:44:15,828 INFO L448 ceAbstractionStarter]: For program point L92-1(lines 92 95) no Hoare annotation was computed. [2018-12-01 22:44:15,829 INFO L444 ceAbstractionStarter]: At program point L89(line 89) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-01 22:44:15,829 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 82 98) no Hoare annotation was computed. [2018-12-01 22:44:15,829 INFO L448 ceAbstractionStarter]: For program point L89-1(line 89) no Hoare annotation was computed. [2018-12-01 22:44:15,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:44:15 BoogieIcfgContainer [2018-12-01 22:44:15,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:44:15,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:44:15,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:44:15,836 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:44:15,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:44:06" (3/4) ... [2018-12-01 22:44:15,839 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 22:44:15,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_double [2018-12-01 22:44:15,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-01 22:44:15,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 22:44:15,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 22:44:15,846 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-01 22:44:15,846 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-01 22:44:15,846 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 22:44:15,862 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-01 22:44:15,877 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d6e45d16-2b16-44aa-b5b5-2e230db4b04b/bin-2019/utaipan/witness.graphml [2018-12-01 22:44:15,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:44:15,877 INFO L168 Benchmark]: Toolchain (without parser) took 10711.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 944.7 MB in the beginning and 874.5 MB in the end (delta: 70.2 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,878 INFO L168 Benchmark]: CDTParser took 0.16 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 22:44:15,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.06 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 927.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.01 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 22:44:15,878 INFO L168 Benchmark]: Boogie Preprocessor took 61.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,879 INFO L168 Benchmark]: RCFGBuilder took 1014.09 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,879 INFO L168 Benchmark]: TraceAbstraction took 9403.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.3 MB in the end (delta: 221.5 MB). Peak memory consumption was 221.5 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,879 INFO L168 Benchmark]: Witness Printer took 40.63 ms. Allocated memory is still 1.2 GB. Free memory was 881.3 MB in the beginning and 874.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-01 22:44:15,880 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.06 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 927.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.01 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. * Boogie Preprocessor took 61.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1014.09 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9403.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.3 MB in the end (delta: 221.5 MB). Peak memory consumption was 221.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.63 ms. Allocated memory is still 1.2 GB. Free memory was 881.3 MB in the beginning and 874.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: 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: 19]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. SAFE Result, 9.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 7.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 186 SDtfs, 249 SDslu, 649 SDs, 0 SdLazy, 326 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 21 QuantifiedInterpolants, 18833 SizeOfPredicates, 16 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...