./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8_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_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/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 847ec304644081d839ca7e80209d45b391ec9937 ....................................................................................................................................................................................................................................... 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_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/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 847ec304644081d839ca7e80209d45b391ec9937 ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 06:15:05,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:15:05,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:15:05,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:15:05,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:15:05,848 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:15:05,849 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:15:05,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:15:05,851 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:15:05,852 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:15:05,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:15:05,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:15:05,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:15:05,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:15:05,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:15:05,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:15:05,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:15:05,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:15:05,859 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:15:05,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:15:05,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:15:05,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:15:05,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:15:05,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:15:05,863 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:15:05,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:15:05,864 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:15:05,865 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:15:05,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:15:05,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:15:05,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:15:05,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:15:05,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:15:05,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:15:05,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:15:05,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:15:05,869 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 06:15:05,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:15:05,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:15:05,879 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 06:15:05,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 06:15:05,880 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 06:15:05,881 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:15:05,881 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:15:05,881 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:15:05,881 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:15:05,881 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:15:05,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:15:05,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:15:05,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:15:05,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:15:05,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 06:15:05,884 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_5991694b-8ff3-4f17-932f-e056e7aef254/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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-11-10 06:15:05,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:15:05,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:15:05,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:15:05,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:15:05,919 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:15:05,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:05,963 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/d84793b2d/5595e036ecd143e78a14324dd50b47f8/FLAG54301eb58 [2018-11-10 06:15:06,280 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:15:06,280 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:06,284 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/d84793b2d/5595e036ecd143e78a14324dd50b47f8/FLAG54301eb58 [2018-11-10 06:15:06,292 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/d84793b2d/5595e036ecd143e78a14324dd50b47f8 [2018-11-10 06:15:06,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:15:06,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:15:06,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:15:06,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:15:06,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:15:06,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79092fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06, skipping insertion in model container [2018-11-10 06:15:06,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:15:06,318 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:15:06,407 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:15:06,409 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:15:06,418 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:15:06,426 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:15:06,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06 WrapperNode [2018-11-10 06:15:06,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:15:06,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:15:06,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:15:06,427 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:15:06,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:15:06,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:15:06,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:15:06,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:15:06,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... [2018-11-10 06:15:06,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:15:06,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:15:06,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:15:06,451 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:15:06,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/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 [2018-11-10 06:15:06,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:15:06,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:15:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:15:06,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:15:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:15:06,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:15:06,637 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:15:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:06 BoogieIcfgContainer [2018-11-10 06:15:06,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:15:06,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:15:06,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:15:06,640 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:15:06,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:15:06" (1/3) ... [2018-11-10 06:15:06,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778035ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:06, skipping insertion in model container [2018-11-10 06:15:06,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:06" (2/3) ... [2018-11-10 06:15:06,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778035ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:06, skipping insertion in model container [2018-11-10 06:15:06,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:06" (3/3) ... [2018-11-10 06:15:06,643 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:06,649 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:15:06,654 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:15:06,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:15:06,688 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:15:06,688 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:15:06,688 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:15:06,688 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:15:06,689 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:15:06,689 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:15:06,689 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:15:06,689 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:15:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-10 06:15:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-10 06:15:06,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:15:06,707 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:15:06,709 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:15:06,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:15:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-10 06:15:06,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:15:06,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:15:06,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:15:06,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:15:06,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:15:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:15:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:15:06,782 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 06:15:06,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:15:06 BoogieIcfgContainer [2018-11-10 06:15:06,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:15:06,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:15:06,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:15:06,796 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:15:06,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:06" (3/4) ... [2018-11-10 06:15:06,799 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 06:15:06,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:15:06,799 INFO L168 Benchmark]: Toolchain (without parser) took 505.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:15:06,801 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:15:06,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.63 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:15:06,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:15:06,802 INFO L168 Benchmark]: Boogie Preprocessor took 12.23 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 945.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:15:06,802 INFO L168 Benchmark]: RCFGBuilder took 186.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:15:06,803 INFO L168 Benchmark]: TraceAbstraction took 156.99 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:15:06,803 INFO L168 Benchmark]: Witness Printer took 3.35 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. [2018-11-10 06:15:06,805 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 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 131.63 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.23 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 945.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 156.99 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.35 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: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 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=13occurred 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, 7 NumberOfCodeBlocks, 7 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 [2018-11-10 06:15:08,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:15:08,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:15:08,231 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:15:08,231 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:15:08,231 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:15:08,232 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:15:08,234 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:15:08,235 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:15:08,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:15:08,236 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:15:08,236 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:15:08,237 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:15:08,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:15:08,238 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:15:08,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:15:08,239 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:15:08,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:15:08,242 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:15:08,243 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:15:08,244 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:15:08,245 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:15:08,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:15:08,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:15:08,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:15:08,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:15:08,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:15:08,248 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:15:08,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:15:08,250 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:15:08,250 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:15:08,250 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:15:08,250 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:15:08,251 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:15:08,251 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:15:08,252 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:15:08,252 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 06:15:08,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:15:08,262 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:15:08,263 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:15:08,263 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 06:15:08,263 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 06:15:08,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 06:15:08,263 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 06:15:08,263 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 06:15:08,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:15:08,264 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:15:08,264 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:15:08,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:15:08,264 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:15:08,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:15:08,266 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:15:08,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:15:08,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:15:08,267 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 06:15:08,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:15:08,267 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 06:15:08,267 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 06:15:08,267 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_5991694b-8ff3-4f17-932f-e056e7aef254/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 -> 847ec304644081d839ca7e80209d45b391ec9937 [2018-11-10 06:15:08,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:15:08,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:15:08,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:15:08,309 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:15:08,309 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:15:08,310 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:08,353 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/8fe2e3f3c/f6a69a8860fc4d2cb6e2d0460d09d506/FLAG26fb71074 [2018-11-10 06:15:08,735 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:15:08,735 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/sv-benchmarks/c/floats-cdfpl/square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:08,739 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/8fe2e3f3c/f6a69a8860fc4d2cb6e2d0460d09d506/FLAG26fb71074 [2018-11-10 06:15:08,747 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/data/8fe2e3f3c/f6a69a8860fc4d2cb6e2d0460d09d506 [2018-11-10 06:15:08,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:15:08,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:15:08,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:15:08,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:15:08,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:15:08,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161d2824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08, skipping insertion in model container [2018-11-10 06:15:08,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:15:08,778 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:15:08,881 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:15:08,885 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:15:08,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:15:08,904 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:15:08,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08 WrapperNode [2018-11-10 06:15:08,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:15:08,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:15:08,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:15:08,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:15:08,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:15:08,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:15:08,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:15:08,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:15:08,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... [2018-11-10 06:15:08,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:15:08,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:15:08,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:15:08,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:15:08,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/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 [2018-11-10 06:15:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:15:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:15:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:15:11,145 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:15:11,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:11 BoogieIcfgContainer [2018-11-10 06:15:11,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:15:11,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:15:11,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:15:11,148 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:15:11,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:15:08" (1/3) ... [2018-11-10 06:15:11,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d4854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:11, skipping insertion in model container [2018-11-10 06:15:11,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:15:08" (2/3) ... [2018-11-10 06:15:11,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0d4854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:15:11, skipping insertion in model container [2018-11-10 06:15:11,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:11" (3/3) ... [2018-11-10 06:15:11,150 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8_true-unreach-call_true-termination.i [2018-11-10 06:15:11,156 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:15:11,160 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:15:11,173 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:15:11,192 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 06:15:11,193 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:15:11,193 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:15:11,193 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:15:11,193 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:15:11,193 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:15:11,193 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:15:11,193 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:15:11,193 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:15:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-10 06:15:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-10 06:15:11,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:15:11,207 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:15:11,209 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:15:11,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:15:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-11-10 06:15:11,218 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 06:15:11,219 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/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 [2018-11-10 06:15:11,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:15:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:15:53,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:15:55,471 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from false [2018-11-10 06:15:57,515 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (= c_main_~result~0 (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.lt main_~IN~0 .cse0) (fp.geq main_~IN~0 (_ +zero 8 24))))) is different from true [2018-11-10 06:16:09,899 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24)))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (fp.lt main_~IN~0 .cse1) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) RNE (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from false [2018-11-10 06:16:11,966 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (fp.lt v_prenex_1 .cse0) (not (fp.geq (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse0 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) v_prenex_1)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) (_ +zero 8 24)))))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (and (fp.lt main_~IN~0 .cse1) (not (fp.lt (fp.sub RNE (fp.add RNE (fp.sub RNE (fp.add RNE .cse1 (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 2.0)) main_~IN~0)) (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul RNE (fp.mul RNE (fp.mul RNE (fp.mul RNE ((_ to_fp 8 24) RNE (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) ((_ to_fp 8 24) RNE (/ 3.0 2.0)))) (fp.geq main_~IN~0 (_ +zero 8 24)))))) is different from true [2018-11-10 06:16:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:16:11,970 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 06:16:11,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:16:11,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 06:16:11,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 06:16:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 06:16:11,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-11-10 06:16:11,997 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-11-10 06:16:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:16:12,008 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-11-10 06:16:12,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 06:16:12,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-11-10 06:16:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:16:12,013 INFO L225 Difference]: With dead ends: 18 [2018-11-10 06:16:12,013 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 06:16:12,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-11-10 06:16:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 06:16:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 06:16:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 06:16:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 06:16:12,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-11-10 06:16:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:16:12,032 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 06:16:12,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 06:16:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 06:16:12,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:16:12,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 06:16:12,075 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 06:16:12,075 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:16:12,075 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:16:12,075 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 06:16:12,075 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-11-10 06:16:12,076 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-11-10 06:16:12,076 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-11-10 06:16:12,077 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-11-10 06:16:12,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:16:12 BoogieIcfgContainer [2018-11-10 06:16:12,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:16:12,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:16:12,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:16:12,080 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:16:12,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:15:11" (3/4) ... [2018-11-10 06:16:12,083 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:16:12,089 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 06:16:12,090 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 06:16:12,093 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 06:16:12,093 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 06:16:12,093 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:16:12,115 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5991694b-8ff3-4f17-932f-e056e7aef254/bin-2019/utaipan/witness.graphml [2018-11-10 06:16:12,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:16:12,116 INFO L168 Benchmark]: Toolchain (without parser) took 63366.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-11-10 06:16:12,117 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-10 06:16:12,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.10 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:16:12,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.05 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:16:12,118 INFO L168 Benchmark]: Boogie Preprocessor took 11.66 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 06:16:12,118 INFO L168 Benchmark]: RCFGBuilder took 2214.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:16:12,119 INFO L168 Benchmark]: TraceAbstraction took 60933.18 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:16:12,119 INFO L168 Benchmark]: Witness Printer took 36.11 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. [2018-11-10 06:16:12,121 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.10 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.05 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.66 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2214.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 60933.18 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.11 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: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 60.8s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 42.0s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 1224 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...