./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/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_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/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_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/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_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/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 0.1.23-5842f4b [2018-11-18 16:31:39,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:31:39,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:31:39,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:31:39,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:31:39,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:31:39,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:31:39,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:31:39,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:31:39,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:31:39,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:31:39,484 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:31:39,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:31:39,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:31:39,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:31:39,486 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:31:39,486 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:31:39,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:31:39,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:31:39,489 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:31:39,490 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:31:39,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:31:39,493 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:31:39,493 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:31:39,493 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:31:39,494 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:31:39,494 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:31:39,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:31:39,495 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:31:39,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:31:39,496 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:31:39,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:31:39,496 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:31:39,496 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:31:39,497 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:31:39,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:31:39,497 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:31:39,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:31:39,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:31:39,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:31:39,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:31:39,509 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:31:39,509 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:31:39,510 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:31:39,510 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:31:39,510 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:31:39,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:31:39,511 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:31:39,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:31:39,512 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:31:39,512 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:31:39,512 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:31:39,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:31:39,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:31:39,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:31:39,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:31:39,513 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_3175ad01-43c6-4e82-a23d-194777e9a9a4/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 [2018-11-18 16:31:39,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:31:39,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:31:39,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:31:39,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:31:39,551 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:31:39,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:39,596 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/996e648ab/625059fc38cc4be8865c1fa3f565c54c/FLAG2980b39bf [2018-11-18 16:31:39,938 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:31:39,938 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:39,944 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/996e648ab/625059fc38cc4be8865c1fa3f565c54c/FLAG2980b39bf [2018-11-18 16:31:40,365 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/996e648ab/625059fc38cc4be8865c1fa3f565c54c [2018-11-18 16:31:40,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:31:40,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:31:40,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:31:40,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:31:40,372 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:31:40,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ae4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40, skipping insertion in model container [2018-11-18 16:31:40,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:31:40,397 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:31:40,533 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:31:40,537 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:31:40,555 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:31:40,565 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:31:40,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40 WrapperNode [2018-11-18 16:31:40,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:31:40,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:31:40,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:31:40,567 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:31:40,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:31:40,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:31:40,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:31:40,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:31:40,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... [2018-11-18 16:31:40,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:31:40,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:31:40,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:31:40,596 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:31:40,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:31:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-11-18 16:31:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-11-18 16:31:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:31:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:31:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:31:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:31:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-11-18 16:31:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-11-18 16:31:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:31:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:31:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-11-18 16:31:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-11-18 16:31:40,787 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:31:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:40 BoogieIcfgContainer [2018-11-18 16:31:40,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:31:40,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:31:40,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:31:40,790 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:31:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:31:40" (1/3) ... [2018-11-18 16:31:40,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf832f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:31:40, skipping insertion in model container [2018-11-18 16:31:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:40" (2/3) ... [2018-11-18 16:31:40,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf832f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:31:40, skipping insertion in model container [2018-11-18 16:31:40,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:40" (3/3) ... [2018-11-18 16:31:40,793 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:40,799 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:31:40,805 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 16:31:40,815 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 16:31:40,839 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:31:40,839 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:31:40,839 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:31:40,839 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:31:40,839 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:31:40,839 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:31:40,839 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:31:40,840 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:31:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 16:31:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 16:31:40,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:31:40,856 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:31:40,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:31:40,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:31:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-11-18 16:31:40,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:31:40,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:31:40,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:31:40,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:31:40,900 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:31:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:31:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:31:40,936 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:31:40,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:31:40 BoogieIcfgContainer [2018-11-18 16:31:40,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:31:40,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:31:40,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:31:40,953 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:31:40,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:40" (3/4) ... [2018-11-18 16:31:40,956 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:31:40,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:31:40,957 INFO L168 Benchmark]: Toolchain (without parser) took 589.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:40,958 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:40,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.93 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:40,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:40,960 INFO L168 Benchmark]: Boogie Preprocessor took 14.49 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:40,960 INFO L168 Benchmark]: RCFGBuilder took 191.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:40,961 INFO L168 Benchmark]: TraceAbstraction took 164.67 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:40,962 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:40,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 196.93 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.49 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 191.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 164.67 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.93 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 0.1.23-5842f4b [2018-11-18 16:31:42,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:31:42,491 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:31:42,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:31:42,499 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:31:42,500 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:31:42,501 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:31:42,502 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:31:42,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:31:42,504 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:31:42,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:31:42,505 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:31:42,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:31:42,506 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:31:42,507 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:31:42,508 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:31:42,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:31:42,510 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:31:42,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:31:42,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:31:42,513 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:31:42,514 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:31:42,516 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:31:42,517 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:31:42,517 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:31:42,517 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:31:42,518 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:31:42,519 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:31:42,520 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:31:42,521 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:31:42,521 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:31:42,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:31:42,521 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:31:42,522 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:31:42,522 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:31:42,523 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:31:42,523 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:31:42,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:31:42,535 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:31:42,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:31:42,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:31:42,536 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:31:42,537 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:31:42,537 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:31:42,537 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:31:42,537 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:31:42,537 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:31:42,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:31:42,538 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:31:42,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:31:42,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:31:42,539 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:31:42,540 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:31:42,540 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:31:42,540 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_3175ad01-43c6-4e82-a23d-194777e9a9a4/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 [2018-11-18 16:31:42,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:31:42,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:31:42,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:31:42,582 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:31:42,582 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:31:42,583 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:42,621 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/2ee95edfe/8f898853282e4fe78fb0ae99e3d2885f/FLAGb2f4b72ec [2018-11-18 16:31:43,012 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:31:43,012 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:43,016 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/2ee95edfe/8f898853282e4fe78fb0ae99e3d2885f/FLAGb2f4b72ec [2018-11-18 16:31:43,024 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/data/2ee95edfe/8f898853282e4fe78fb0ae99e3d2885f [2018-11-18 16:31:43,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:31:43,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:31:43,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:31:43,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:31:43,030 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:31:43,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb8efdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43, skipping insertion in model container [2018-11-18 16:31:43,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:31:43,050 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:31:43,165 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:31:43,170 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:31:43,184 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:31:43,194 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:31:43,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43 WrapperNode [2018-11-18 16:31:43,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:31:43,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:31:43,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:31:43,195 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:31:43,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:31:43,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:31:43,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:31:43,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:31:43,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... [2018-11-18 16:31:43,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:31:43,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:31:43,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:31:43,222 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:31:43,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:31:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-11-18 16:31:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-11-18 16:31:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:31:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:31:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:31:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:31:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-11-18 16:31:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-11-18 16:31:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:31:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:31:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-11-18 16:31:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-11-18 16:31:43,405 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:31:43,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:43 BoogieIcfgContainer [2018-11-18 16:31:43,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:31:43,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:31:43,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:31:43,409 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:31:43,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:31:43" (1/3) ... [2018-11-18 16:31:43,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b2d537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:31:43, skipping insertion in model container [2018-11-18 16:31:43,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:31:43" (2/3) ... [2018-11-18 16:31:43,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b2d537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:31:43, skipping insertion in model container [2018-11-18 16:31:43,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:43" (3/3) ... [2018-11-18 16:31:43,412 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-11-18 16:31:43,420 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:31:43,426 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 16:31:43,436 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 16:31:43,453 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:31:43,454 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:31:43,454 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:31:43,454 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:31:43,454 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:31:43,454 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:31:43,454 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:31:43,454 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:31:43,455 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:31:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 16:31:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 16:31:43,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:31:43,471 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:31:43,472 INFO L423 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:31:43,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:31:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-11-18 16:31:43,478 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:31:43,478 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 16:31:43,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:31:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:31:43,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:31:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:31:43,575 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:31:43,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:31:43,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:31:43,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:31:43,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:31:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:31:43,605 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2018-11-18 16:31:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:31:43,623 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-11-18 16:31:43,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:31:43,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 16:31:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:31:43,631 INFO L225 Difference]: With dead ends: 49 [2018-11-18 16:31:43,632 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 16:31:43,634 INFO L604 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 [2018-11-18 16:31:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 16:31:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 16:31:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 16:31:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-11-18 16:31:43,658 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 8 [2018-11-18 16:31:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:31:43,658 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-11-18 16:31:43,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:31:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-11-18 16:31:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:31:43,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:31:43,660 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:31:43,660 INFO L423 AbstractCegarLoop]: === Iteration 2 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:31:43,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:31:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1652764716, now seen corresponding path program 1 times [2018-11-18 16:31:43,661 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:31:43,661 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 16:31:43,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:31:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:31:43,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:31:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:31:43,874 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:31:43,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:31:43,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:31:43,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:31:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:31:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:31:43,884 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 3 states. [2018-11-18 16:31:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:31:43,888 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-11-18 16:31:43,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:31:43,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 16:31:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:31:43,889 INFO L225 Difference]: With dead ends: 21 [2018-11-18 16:31:43,889 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 16:31:43,890 INFO L604 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 [2018-11-18 16:31:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 16:31:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 16:31:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 16:31:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-11-18 16:31:43,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 13 [2018-11-18 16:31:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:31:43,892 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-11-18 16:31:43,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:31:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-11-18 16:31:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 16:31:43,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:31:43,893 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:31:43,893 INFO L423 AbstractCegarLoop]: === Iteration 3 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:31:43,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:31:43,894 INFO L82 PathProgramCache]: Analyzing trace with hash -207607829, now seen corresponding path program 1 times [2018-11-18 16:31:43,894 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:31:43,894 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 16:31:43,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:31:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:31:44,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:31:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:31:44,128 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:31:44,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:31:44,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:31:44,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:31:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:31:44,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:31:44,137 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 3 states. [2018-11-18 16:31:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:31:44,139 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-11-18 16:31:44,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:31:44,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-18 16:31:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:31:44,140 INFO L225 Difference]: With dead ends: 19 [2018-11-18 16:31:44,140 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:31:44,140 INFO L604 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 [2018-11-18 16:31:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:31:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:31:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:31:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:31:44,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-18 16:31:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:31:44,141 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:31:44,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:31:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:31:44,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:31:44,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:31:44,178 INFO L425 ceAbstractionStarter]: For program point castEXIT(lines 23 30) no Hoare annotation was computed. [2018-11-18 16:31:44,178 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-18 16:31:44,178 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-18 16:31:44,178 INFO L428 ceAbstractionStarter]: At program point castENTRY(lines 23 30) the Hoare annotation is: true [2018-11-18 16:31:44,178 INFO L425 ceAbstractionStarter]: For program point L29-3(lines 23 30) no Hoare annotation was computed. [2018-11-18 16:31:44,178 INFO L425 ceAbstractionStarter]: For program point castErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:31:44,179 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 13 21) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point divideErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-11-18 16:31:44,179 INFO L428 ceAbstractionStarter]: At program point divideENTRY(lines 13 21) the Hoare annotation is: true [2018-11-18 16:31:44,179 INFO L425 ceAbstractionStarter]: For program point divideEXIT(lines 13 21) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 32 37) the Hoare annotation is: true [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 32 37) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 32 37) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L428 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: true [2018-11-18 16:31:44,180 INFO L428 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-11-18 16:31:44,180 INFO L428 ceAbstractionStarter]: At program point multiplyENTRY(lines 3 11) the Hoare annotation is: true [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-18 16:31:44,180 INFO L425 ceAbstractionStarter]: For program point multiplyEXIT(lines 3 11) no Hoare annotation was computed. [2018-11-18 16:31:44,181 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-18 16:31:44,181 INFO L425 ceAbstractionStarter]: For program point L10-3(lines 3 11) no Hoare annotation was computed. [2018-11-18 16:31:44,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:31:44 BoogieIcfgContainer [2018-11-18 16:31:44,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:31:44,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:31:44,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:31:44,183 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:31:44,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:31:43" (3/4) ... [2018-11-18 16:31:44,186 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:31:44,189 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure cast [2018-11-18 16:31:44,190 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:31:44,190 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure divide [2018-11-18 16:31:44,190 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:31:44,190 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure multiply [2018-11-18 16:31:44,192 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 16:31:44,193 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 16:31:44,193 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:31:44,217 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3175ad01-43c6-4e82-a23d-194777e9a9a4/bin-2019/utaipan/witness.graphml [2018-11-18 16:31:44,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:31:44,218 INFO L168 Benchmark]: Toolchain (without parser) took 1191.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -122.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:44,218 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:44,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.95 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:44,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.98 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:44,219 INFO L168 Benchmark]: Boogie Preprocessor took 13.63 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:31:44,219 INFO L168 Benchmark]: RCFGBuilder took 183.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:44,220 INFO L168 Benchmark]: TraceAbstraction took 776.33 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:44,220 INFO L168 Benchmark]: Witness Printer took 34.13 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:31:44,222 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 166.95 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.98 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.63 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 776.33 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. * Witness Printer took 34.13 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: 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: 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, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s 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...