./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 8ccc35369aa7fc4059706b8166915b481ecdc09d .......................................................................................................................................................................................................................................................... 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_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 8ccc35369aa7fc4059706b8166915b481ecdc09d ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:58:19,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:58:19,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:58:19,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:58:19,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:58:19,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:58:19,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:58:19,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:58:19,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:58:19,909 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:58:19,910 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:58:19,910 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:58:19,911 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:58:19,912 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:58:19,913 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:58:19,913 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:58:19,914 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:58:19,916 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:58:19,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:58:19,918 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:58:19,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:58:19,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:58:19,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:58:19,922 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:58:19,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:58:19,923 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:58:19,924 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:58:19,925 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:58:19,925 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:58:19,926 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:58:19,926 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:58:19,927 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:58:19,927 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:58:19,927 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:58:19,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:58:19,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:58:19,930 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-27 00:58:19,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:58:19,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:58:19,942 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:58:19,942 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:58:19,942 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:58:19,942 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:58:19,943 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:58:19,943 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:58:19,943 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:58:19,943 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:58:19,943 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:58:19,944 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:58:19,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:58:19,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:58:19,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:58:19,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:58:19,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:58:19,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:58:19,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:58:19,947 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_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 -> 8ccc35369aa7fc4059706b8166915b481ecdc09d [2018-10-27 00:58:19,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:58:19,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:58:19,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:58:19,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:58:19,999 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:58:20,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:20,040 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/2bcecbb82/8b3e1fdce8194336b9890b385bf631a2/FLAG1ac01f57e [2018-10-27 00:58:20,423 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:58:20,423 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:20,428 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/2bcecbb82/8b3e1fdce8194336b9890b385bf631a2/FLAG1ac01f57e [2018-10-27 00:58:20,440 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/2bcecbb82/8b3e1fdce8194336b9890b385bf631a2 [2018-10-27 00:58:20,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:58:20,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:58:20,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:20,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:58:20,449 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:58:20,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de688fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20, skipping insertion in model container [2018-10-27 00:58:20,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:58:20,476 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:58:20,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:20,624 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:58:20,650 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:20,664 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:58:20,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20 WrapperNode [2018-10-27 00:58:20,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:20,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:20,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:58:20,665 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:58:20,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:20,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:58:20,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:58:20,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:58:20,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... [2018-10-27 00:58:20,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:58:20,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:58:20,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:58:20,701 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:58:20,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 [2018-10-27 00:58:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-10-27 00:58:20,795 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-10-27 00:58:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:58:20,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:58:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:58:20,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:58:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:58:20,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:58:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-10-27 00:58:20,796 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-10-27 00:58:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-10-27 00:58:20,797 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-10-27 00:58:21,020 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:58:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:21 BoogieIcfgContainer [2018-10-27 00:58:21,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:58:21,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:58:21,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:58:21,024 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:58:21,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:58:20" (1/3) ... [2018-10-27 00:58:21,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0c54f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:21, skipping insertion in model container [2018-10-27 00:58:21,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:20" (2/3) ... [2018-10-27 00:58:21,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0c54f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:21, skipping insertion in model container [2018-10-27 00:58:21,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:21" (3/3) ... [2018-10-27 00:58:21,027 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:21,036 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:58:21,042 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 00:58:21,055 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 00:58:21,081 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:58:21,081 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:58:21,081 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:58:21,081 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:58:21,081 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:58:21,081 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:58:21,082 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:58:21,082 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:58:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-10-27 00:58:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 00:58:21,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:21,102 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:21,104 INFO L424 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:21,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-10-27 00:58:21,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:58:21,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:21,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:21,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:21,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:58:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:58:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:58:21,193 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:58:21,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:58:21 BoogieIcfgContainer [2018-10-27 00:58:21,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:58:21,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:58:21,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:58:21,212 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:58:21,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:21" (3/4) ... [2018-10-27 00:58:21,216 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 00:58:21,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:58:21,217 INFO L168 Benchmark]: Toolchain (without parser) took 773.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:21,218 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:21,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:21,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:21,221 INFO L168 Benchmark]: Boogie Preprocessor took 16.69 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:21,222 INFO L168 Benchmark]: RCFGBuilder took 320.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:21,223 INFO L168 Benchmark]: TraceAbstraction took 190.63 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:21,223 INFO L168 Benchmark]: Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:21,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 219.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.69 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 320.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 190.63 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 8. Possible FailurePath: [L34] CALL multiply() [L5] float f1=0x1.000000p-1f; [L6] float f2=0x1.fffffep-126f; [L8] float res = f1 * f2; VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L10] COND TRUE !(res == 0x1.0p-126f) VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L10] __VERIFIER_error() VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.23-1dbac8b [2018-10-27 00:58:22,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:58:22,975 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:58:22,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:58:22,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:58:22,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:58:22,986 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:58:22,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:58:22,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:58:22,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:58:22,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:58:22,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:58:22,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:58:22,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:58:22,993 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:58:22,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:58:22,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:58:22,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:58:22,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:58:22,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:58:23,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:58:23,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:58:23,003 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:58:23,003 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:58:23,003 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:58:23,004 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:58:23,005 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:58:23,005 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:58:23,006 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:58:23,007 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:58:23,007 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:58:23,007 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:58:23,008 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:58:23,009 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:58:23,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:58:23,010 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:58:23,010 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-27 00:58:23,022 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:58:23,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:58:23,023 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:58:23,023 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:58:23,023 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:58:23,023 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:58:23,023 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:58:23,024 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:58:23,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:58:23,024 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:58:23,024 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:58:23,024 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:58:23,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:58:23,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:58:23,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:58:23,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:58:23,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:58:23,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:58:23,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:58:23,027 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:58:23,030 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_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 -> 8ccc35369aa7fc4059706b8166915b481ecdc09d [2018-10-27 00:58:23,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:58:23,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:58:23,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:58:23,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:58:23,078 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:58:23,078 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:23,122 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/a7b6fd432/e5a8855307e845638722e6550914eb32/FLAG359c949ff [2018-10-27 00:58:23,492 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:58:23,492 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:23,497 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/a7b6fd432/e5a8855307e845638722e6550914eb32/FLAG359c949ff [2018-10-27 00:58:23,509 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/data/a7b6fd432/e5a8855307e845638722e6550914eb32 [2018-10-27 00:58:23,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:58:23,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:58:23,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:23,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:58:23,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:58:23,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eca4503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23, skipping insertion in model container [2018-10-27 00:58:23,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:58:23,547 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:58:23,685 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:23,690 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:58:23,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:23,719 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:58:23,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23 WrapperNode [2018-10-27 00:58:23,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:23,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:23,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:58:23,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:58:23,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:23,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:58:23,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:58:23,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:58:23,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... [2018-10-27 00:58:23,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:58:23,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:58:23,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:58:23,758 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:58:23,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 [2018-10-27 00:58:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-10-27 00:58:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-10-27 00:58:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:58:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:58:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:58:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:58:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:58:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:58:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-10-27 00:58:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-10-27 00:58:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-10-27 00:58:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-10-27 00:58:24,106 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:58:24,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:24 BoogieIcfgContainer [2018-10-27 00:58:24,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:58:24,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:58:24,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:58:24,110 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:58:24,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:58:23" (1/3) ... [2018-10-27 00:58:24,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14165c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:24, skipping insertion in model container [2018-10-27 00:58:24,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:23" (2/3) ... [2018-10-27 00:58:24,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14165c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:24, skipping insertion in model container [2018-10-27 00:58:24,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:24" (3/3) ... [2018-10-27 00:58:24,114 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-10-27 00:58:24,122 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:58:24,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 00:58:24,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 00:58:24,166 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:58:24,167 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:58:24,167 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:58:24,167 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:58:24,168 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:58:24,168 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:58:24,168 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:58:24,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:58:24,168 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:58:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-10-27 00:58:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 00:58:24,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:24,188 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:24,190 INFO L424 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:24,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:24,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-10-27 00:58:24,199 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:58:24,199 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-27 00:58:24,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-27 00:58:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:24,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:58:24,374 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:24,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:24,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:58:24,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:58:24,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:58:24,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:24,398 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2018-10-27 00:58:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:24,430 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-10-27 00:58:24,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:58:24,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-27 00:58:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:24,439 INFO L225 Difference]: With dead ends: 49 [2018-10-27 00:58:24,440 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 00:58:24,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 00:58:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 00:58:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 00:58:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-10-27 00:58:24,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 8 [2018-10-27 00:58:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:24,473 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-10-27 00:58:24,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:58:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-10-27 00:58:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 00:58:24,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:24,474 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:24,475 INFO L424 AbstractCegarLoop]: === Iteration 2 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:24,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:24,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1652760744, now seen corresponding path program 1 times [2018-10-27 00:58:24,475 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:58:24,475 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-27 00:58:24,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-27 00:58:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:24,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:58:24,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:24,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:24,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:58:24,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:58:24,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:58:24,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:24,722 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 3 states. [2018-10-27 00:58:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:24,728 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-10-27 00:58:24,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:58:24,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-27 00:58:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:24,730 INFO L225 Difference]: With dead ends: 21 [2018-10-27 00:58:24,730 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 00:58:24,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 00:58:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 00:58:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 00:58:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-10-27 00:58:24,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 13 [2018-10-27 00:58:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:24,735 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-10-27 00:58:24,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:58:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-10-27 00:58:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 00:58:24,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:24,736 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:24,736 INFO L424 AbstractCegarLoop]: === Iteration 3 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:24,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1838230247, now seen corresponding path program 1 times [2018-10-27 00:58:24,737 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:58:24,737 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/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 [2018-10-27 00:58:24,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:24,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:58:25,005 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:25,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:25,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:58:25,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:58:25,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:58:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:25,017 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 3 states. [2018-10-27 00:58:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:25,019 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-10-27 00:58:25,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:58:25,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-27 00:58:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:25,020 INFO L225 Difference]: With dead ends: 19 [2018-10-27 00:58:25,020 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 00:58:25,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 00:58:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 00:58:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 00:58:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 00:58:25,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-10-27 00:58:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:25,021 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 00:58:25,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:58:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 00:58:25,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 00:58:25,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 00:58:25,179 INFO L425 ceAbstractionStarter]: For program point castEXIT(lines 23 30) no Hoare annotation was computed. [2018-10-27 00:58:25,179 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-10-27 00:58:25,179 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-10-27 00:58:25,179 INFO L428 ceAbstractionStarter]: At program point castENTRY(lines 23 30) the Hoare annotation is: true [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point L29-3(lines 23 30) no Hoare annotation was computed. [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point castErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2018-10-27 00:58:25,180 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 00:58:25,180 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 00:58:25,180 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 00:58:25,180 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 32 37) the Hoare annotation is: true [2018-10-27 00:58:25,180 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 32 37) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 32 37) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L428 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: true [2018-10-27 00:58:25,181 INFO L428 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point divideErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 13 21) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L428 ceAbstractionStarter]: At program point divideENTRY(lines 13 21) the Hoare annotation is: true [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point divideEXIT(lines 13 21) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-10-27 00:58:25,181 INFO L428 ceAbstractionStarter]: At program point multiplyENTRY(lines 3 11) the Hoare annotation is: true [2018-10-27 00:58:25,182 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-10-27 00:58:25,182 INFO L425 ceAbstractionStarter]: For program point multiplyEXIT(lines 3 11) no Hoare annotation was computed. [2018-10-27 00:58:25,182 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-10-27 00:58:25,182 INFO L425 ceAbstractionStarter]: For program point L10-3(lines 3 11) no Hoare annotation was computed. [2018-10-27 00:58:25,182 INFO L425 ceAbstractionStarter]: For program point multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-10-27 00:58:25,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:58:25 BoogieIcfgContainer [2018-10-27 00:58:25,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:58:25,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:58:25,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:58:25,187 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:58:25,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:24" (3/4) ... [2018-10-27 00:58:25,191 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 00:58:25,197 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure cast [2018-10-27 00:58:25,197 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 00:58:25,197 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 00:58:25,197 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure divide [2018-10-27 00:58:25,197 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure multiply [2018-10-27 00:58:25,202 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-27 00:58:25,202 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 00:58:25,202 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 00:58:25,242 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6ae856b7-9694-4304-833a-e44dc73bf7a0/bin-2019/utaipan/witness.graphml [2018-10-27 00:58:25,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:58:25,243 INFO L168 Benchmark]: Toolchain (without parser) took 1728.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:25,246 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:25,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:25,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.83 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:25,247 INFO L168 Benchmark]: Boogie Preprocessor took 18.38 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:25,248 INFO L168 Benchmark]: RCFGBuilder took 348.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -227.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:25,248 INFO L168 Benchmark]: TraceAbstraction took 1079.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:25,248 INFO L168 Benchmark]: Witness Printer took 54.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:25,250 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.83 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.38 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 348.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -227.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1079.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. * Witness Printer took 54.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 4 SDslu, 53 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...