./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c --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_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 16ab6efcf7b0c54aabe43554a033bf1907c93094 .......................................................................................................................................................................................................................................................................................................... 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_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 16ab6efcf7b0c54aabe43554a033bf1907c93094 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:12:15,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:12:15,843 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:12:15,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:12:15,858 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:12:15,858 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:12:15,859 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:12:15,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:12:15,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:12:15,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:12:15,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:12:15,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:12:15,862 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:12:15,863 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:12:15,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:12:15,867 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:12:15,867 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:12:15,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:12:15,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:12:15,871 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:12:15,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:12:15,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:12:15,883 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:12:15,883 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:12:15,883 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:12:15,884 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:12:15,885 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:12:15,885 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:12:15,886 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:12:15,887 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:12:15,887 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:12:15,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:12:15,891 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:12:15,892 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:12:15,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:12:15,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:12:15,893 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:12:15,904 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:12:15,904 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:12:15,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:12:15,904 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:12:15,905 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:12:15,905 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:12:15,906 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:12:15,906 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:12:15,906 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:12:15,906 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:12:15,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:12:15,907 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:12:15,907 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:12:15,907 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:12:15,907 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:12:15,907 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:12:15,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:12:15,909 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:12:15,909 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:12:15,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:12:15,910 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:12:15,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:12:15,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:12:15,911 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:12:15,911 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_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 -> 16ab6efcf7b0c54aabe43554a033bf1907c93094 [2018-10-26 23:12:15,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:12:15,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:12:15,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:12:15,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:12:15,950 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:12:15,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:15,990 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/a35e16306/b1575f555f7246e6ad7cb95e79fd9e1f/FLAGd15547374 [2018-10-26 23:12:16,350 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:12:16,351 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:16,356 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/a35e16306/b1575f555f7246e6ad7cb95e79fd9e1f/FLAGd15547374 [2018-10-26 23:12:16,367 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/a35e16306/b1575f555f7246e6ad7cb95e79fd9e1f [2018-10-26 23:12:16,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:12:16,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:12:16,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:12:16,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:12:16,374 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:12:16,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fd0115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16, skipping insertion in model container [2018-10-26 23:12:16,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:12:16,402 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:12:16,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:12:16,520 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:12:16,537 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:12:16,547 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:12:16,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16 WrapperNode [2018-10-26 23:12:16,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:12:16,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:12:16,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:12:16,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:12:16,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:12:16,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:12:16,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:12:16,568 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:12:16,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... [2018-10-26 23:12:16,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:12:16,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:12:16,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:12:16,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:12:16,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:12:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:12:16,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:12:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:12:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:12:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:12:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:12:17,157 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:12:17,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:12:17 BoogieIcfgContainer [2018-10-26 23:12:17,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:12:17,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:12:17,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:12:17,161 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:12:17,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:12:16" (1/3) ... [2018-10-26 23:12:17,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5943955d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:12:17, skipping insertion in model container [2018-10-26 23:12:17,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:16" (2/3) ... [2018-10-26 23:12:17,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5943955d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:12:17, skipping insertion in model container [2018-10-26 23:12:17,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:12:17" (3/3) ... [2018-10-26 23:12:17,164 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:17,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:12:17,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:12:17,193 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:12:17,227 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:12:17,227 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:12:17,227 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:12:17,228 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:12:17,228 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:12:17,228 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:12:17,228 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:12:17,228 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:12:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-26 23:12:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:12:17,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:12:17,263 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:12:17,266 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:12:17,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:12:17,272 INFO L82 PathProgramCache]: Analyzing trace with hash 857130946, now seen corresponding path program 1 times [2018-10-26 23:12:17,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:12:17,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:12:17,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:12:17,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:12:17,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:12:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:12:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:12:17,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:12:17,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:12:17,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:12:17,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:12:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:12:17,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:12:17,486 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-10-26 23:12:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:12:17,596 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-26 23:12:17,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:12:17,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 23:12:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:12:17,607 INFO L225 Difference]: With dead ends: 32 [2018-10-26 23:12:17,607 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 23:12:17,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:12:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 23:12:17,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 23:12:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 23:12:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-26 23:12:17,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-10-26 23:12:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:12:17,644 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-26 23:12:17,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:12:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-26 23:12:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:12:17,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:12:17,645 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:12:17,645 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:12:17,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:12:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash 872234983, now seen corresponding path program 1 times [2018-10-26 23:12:17,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:12:17,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:12:17,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:12:17,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:12:17,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:12:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:12:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:12:17,688 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 23:12:17,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:12:17 BoogieIcfgContainer [2018-10-26 23:12:17,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:12:17,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:12:17,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:12:17,713 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:12:17,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:12:17" (3/4) ... [2018-10-26 23:12:17,717 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 23:12:17,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:12:17,718 INFO L168 Benchmark]: Toolchain (without parser) took 1347.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:12:17,719 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:12:17,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:12:17,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.23 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:12:17,721 INFO L168 Benchmark]: Boogie Preprocessor took 17.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:12:17,722 INFO L168 Benchmark]: RCFGBuilder took 572.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -213.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:12:17,723 INFO L168 Benchmark]: TraceAbstraction took 554.60 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-26 23:12:17,723 INFO L168 Benchmark]: Witness Printer took 4.11 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. [2018-10-26 23:12:17,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 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 19.23 ms. Allocated memory is still 1.0 GB. Free memory is still 949.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 572.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -213.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 554.60 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.11 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: - UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L1] int __return_main; [L7] int __return_76; VAL [\old(__return_76)=3, \old(__return_main)=2, __return_76=0, __return_main=0] [L10] double main__x; [L11] double main__y; [L12] main__x = __VERIFIER_nondet_double() [L13] int main____CPAchecker_TMP_0; VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main__x=1] [L14] COND TRUE main__x >= 0.0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main__x=1] [L16] COND TRUE main__x <= 10.0 [L18] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L19] COND TRUE main____CPAchecker_TMP_0 != 0 [L21] main__y = (main__x * main__x) - main__x VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L22] COND TRUE main__y >= 0 [L24] main__y = main__x / 10.0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L26] int main____CPAchecker_TMP_1; VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L27] COND FALSE !(main__y >= 0.0) VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main__x=1] [L53] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L34] int __tmp_1; [L35] __tmp_1 = main____CPAchecker_TMP_1 [L36] int __VERIFIER_assert__cond; [L37] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L38] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] [L40] __VERIFIER_error() VAL [\old(__return_76)=0, __return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 5 SDslu, 49 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:12:19,647 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:12:19,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:12:19,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:12:19,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:12:19,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:12:19,662 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:12:19,663 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:12:19,664 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:12:19,665 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:12:19,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:12:19,666 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:12:19,666 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:12:19,667 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:12:19,668 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:12:19,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:12:19,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:12:19,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:12:19,672 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:12:19,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:12:19,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:12:19,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:12:19,676 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:12:19,677 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:12:19,677 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:12:19,677 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:12:19,678 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:12:19,679 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:12:19,679 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:12:19,680 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:12:19,680 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:12:19,681 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:12:19,681 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:12:19,681 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:12:19,682 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:12:19,682 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:12:19,683 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 23:12:19,694 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:12:19,694 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:12:19,694 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:12:19,695 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:12:19,695 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:12:19,695 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:12:19,695 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:12:19,695 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:12:19,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:12:19,696 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:12:19,696 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:12:19,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:12:19,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:12:19,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:12:19,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:12:19,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:12:19,698 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:12:19,698 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:12:19,699 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 23:12:19,699 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:12:19,699 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 23:12:19,699 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 23:12:19,699 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_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 -> 16ab6efcf7b0c54aabe43554a033bf1907c93094 [2018-10-26 23:12:19,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:12:19,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:12:19,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:12:19,748 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:12:19,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:12:19,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:19,793 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/10d764d1a/741a44b03a304b41a08d98b258afc80b/FLAG1aa069005 [2018-10-26 23:12:20,196 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:12:20,197 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/sv-benchmarks/c/float-benchs/zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:20,203 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/10d764d1a/741a44b03a304b41a08d98b258afc80b/FLAG1aa069005 [2018-10-26 23:12:20,216 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/data/10d764d1a/741a44b03a304b41a08d98b258afc80b [2018-10-26 23:12:20,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:12:20,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:12:20,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:12:20,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:12:20,228 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:12:20,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1b2c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20, skipping insertion in model container [2018-10-26 23:12:20,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:12:20,262 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:12:20,409 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:12:20,414 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:12:20,429 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:12:20,442 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:12:20,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20 WrapperNode [2018-10-26 23:12:20,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:12:20,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:12:20,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:12:20,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:12:20,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:12:20,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:12:20,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:12:20,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:12:20,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... [2018-10-26 23:12:20,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:12:20,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:12:20,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:12:20,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:12:20,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:12:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:12:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:12:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:12:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:12:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:12:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:12:23,697 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:12:23,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:12:23 BoogieIcfgContainer [2018-10-26 23:12:23,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:12:23,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:12:23,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:12:23,701 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:12:23,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:12:20" (1/3) ... [2018-10-26 23:12:23,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b89375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:12:23, skipping insertion in model container [2018-10-26 23:12:23,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:12:20" (2/3) ... [2018-10-26 23:12:23,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b89375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:12:23, skipping insertion in model container [2018-10-26 23:12:23,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:12:23" (3/3) ... [2018-10-26 23:12:23,706 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_loose_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 23:12:23,714 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:12:23,720 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:12:23,733 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:12:23,777 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:12:23,777 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:12:23,778 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:12:23,778 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:12:23,778 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:12:23,778 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:12:23,779 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:12:23,779 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:12:23,779 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:12:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-26 23:12:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:12:23,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:12:23,808 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:12:23,810 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:12:23,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:12:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 857130946, now seen corresponding path program 1 times [2018-10-26 23:12:23,821 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:12:23,821 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 [2018-10-26 23:12:23,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:12:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:12:24,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:12:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:12:24,325 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:12:24,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:12:24,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:12:24,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:12:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:12:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:12:24,352 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2018-10-26 23:12:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:12:24,411 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-26 23:12:24,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:12:24,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 23:12:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:12:24,420 INFO L225 Difference]: With dead ends: 32 [2018-10-26 23:12:24,420 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 23:12:24,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:12:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 23:12:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 23:12:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 23:12:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-26 23:12:24,450 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-10-26 23:12:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:12:24,450 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-26 23:12:24,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:12:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-26 23:12:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:12:24,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:12:24,451 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:12:24,451 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:12:24,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:12:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash 872234983, now seen corresponding path program 1 times [2018-10-26 23:12:24,452 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:12:24,452 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/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 [2018-10-26 23:12:24,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:12:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:12:24,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:12:27,109 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.geq main_~main__x~0 (_ +zero 11 53)) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0))))) is different from false [2018-10-26 23:12:29,280 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.geq main_~main__x~0 (_ +zero 11 53)) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0))))) is different from true [2018-10-26 23:12:35,982 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (_ +zero 11 53))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from false [2018-10-26 23:12:38,197 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div RNE main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (_ +zero 11 53))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from true [2018-10-26 23:12:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:12:51,536 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:12:51,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:12:51,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:12:51,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:12:51,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:12:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=3, Unknown=4, NotChecked=6, Total=20 [2018-10-26 23:12:51,558 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-10-26 23:12:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:12:56,828 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-26 23:12:56,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:12:56,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-26 23:12:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:12:56,871 INFO L225 Difference]: With dead ends: 31 [2018-10-26 23:12:56,871 INFO L226 Difference]: Without dead ends: 26 [2018-10-26 23:12:56,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=7, Invalid=3, Unknown=4, NotChecked=6, Total=20 [2018-10-26 23:12:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-26 23:12:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2018-10-26 23:12:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 23:12:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-26 23:12:56,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2018-10-26 23:12:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:12:56,878 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-26 23:12:56,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:12:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-26 23:12:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:12:56,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:12:56,879 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:12:56,879 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:12:56,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:12:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash -190016834, now seen corresponding path program 1 times [2018-10-26 23:12:56,881 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:12:56,881 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 23:12:56,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:12:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:12:57,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:12:59,549 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from false [2018-10-26 23:13:01,597 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)))) is different from true [2018-10-26 23:13:07,726 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0)) (_ +zero 11 53))))) is different from false [2018-10-26 23:13:09,784 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0)) (_ +zero 11 53))))) is different from true [2018-10-26 23:13:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:13:22,068 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:13:22,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:13:22,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:13:22,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:13:22,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:13:22,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=6, Unknown=4, NotChecked=10, Total=30 [2018-10-26 23:13:22,091 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-10-26 23:13:29,526 WARN L832 $PredicateComparison]: unable to prove that (and (fp.leq c_main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (fp.geq c_main_~main__x~0 (_ +zero 11 53)) (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE (fp.mul RNE main_~main__x~0 main_~main__x~0) ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53))))) is different from false [2018-10-26 23:13:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:13:29,535 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-26 23:13:29,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:13:29,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-10-26 23:13:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:13:29,536 INFO L225 Difference]: With dead ends: 25 [2018-10-26 23:13:29,536 INFO L226 Difference]: Without dead ends: 20 [2018-10-26 23:13:29,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=12, Invalid=7, Unknown=5, NotChecked=18, Total=42 [2018-10-26 23:13:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-26 23:13:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-10-26 23:13:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 23:13:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-26 23:13:29,543 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-26 23:13:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:13:29,543 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-26 23:13:29,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:13:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-26 23:13:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 23:13:29,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:13:29,545 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:13:29,545 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:13:29,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:13:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash 809832475, now seen corresponding path program 1 times [2018-10-26 23:13:29,546 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:13:29,546 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 23:13:29,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:13:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:13:30,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:13:34,402 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (and (fp.leq main_~main__x~0 .cse0) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 .cse0))))) is different from true [2018-10-26 23:13:36,631 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (and (fp.leq main_~main__x~0 .cse0) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 .cse0))))) (fp.geq c_main_~main__y~0 (_ +zero 11 53))) is different from false [2018-10-26 23:13:43,324 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (let ((.cse1 (fp.div RNE main_~main__x~0 .cse0))) (and (fp.leq main_~main__x~0 .cse0) (not (fp.leq .cse1 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse1 (_ +zero 11 53)))))) is different from false [2018-10-26 23:13:45,498 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (let ((.cse1 (fp.div RNE main_~main__x~0 .cse0))) (and (fp.leq main_~main__x~0 .cse0) (not (fp.leq .cse1 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse1 (_ +zero 11 53)))))) is different from true [2018-10-26 23:13:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:13:58,866 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:13:58,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:13:58,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:13:58,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:13:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:13:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=5, Unknown=4, NotChecked=12, Total=30 [2018-10-26 23:13:58,889 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-10-26 23:14:02,796 WARN L832 $PredicateComparison]: unable to prove that (and (fp.leq c_main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 10.0))) (and (fp.leq main_~main__x~0 .cse0) (= c_main_~main__y~0 (fp.div RNE main_~main__x~0 .cse0)))))) is different from false [2018-10-26 23:14:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:14:04,883 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-10-26 23:14:04,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:14:04,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-10-26 23:14:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:14:04,929 INFO L225 Difference]: With dead ends: 26 [2018-10-26 23:14:04,929 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 23:14:04,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=11, Invalid=6, Unknown=5, NotChecked=20, Total=42 [2018-10-26 23:14:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 23:14:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 23:14:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 23:14:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-10-26 23:14:04,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 17 [2018-10-26 23:14:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:14:04,935 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-10-26 23:14:04,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:14:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-10-26 23:14:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 23:14:04,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:14:04,936 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:14:04,937 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:14:04,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:14:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2055202780, now seen corresponding path program 1 times [2018-10-26 23:14:04,937 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:14:04,937 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99414b19-173e-497e-a1c5-5a76fe5fe30d/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-10-26 23:14:04,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:14:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:14:05,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:14:07,636 WARN L832 $PredicateComparison]: unable to prove that (and (fp.leq c_main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.sub RNE (fp.mul RNE c_main_~main__x~0 c_main_~main__x~0) c_main_~main__x~0)) (fp.geq c_main_~main__x~0 (_ +zero 11 53))) is different from false [2018-10-26 23:14:09,702 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from false [2018-10-26 23:14:11,752 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32))))))) is different from true [2018-10-26 23:14:13,814 WARN L832 $PredicateComparison]: unable to prove that (and (fp.geq c_main_~main__y~0 (_ +zero 11 53)) (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (= c_main_~main__y~0 (fp.add RNE .cse0 ((_ to_fp 11 53) RNE 2.0))) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse0 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-10-26 23:14:19,992 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (let ((.cse0 (fp.add RNE .cse1 ((_ to_fp 11 53) RNE 2.0)))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse1 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-10-26 23:14:22,044 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul RNE main_~main__x~0 main_~main__x~0))) (let ((.cse0 (fp.add RNE .cse1 ((_ to_fp 11 53) RNE 2.0)))) (and (fp.leq main_~main__x~0 ((_ to_fp 11 53) RNE 10.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) RNE 105.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq main_~main__x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub RNE .cse1 main_~main__x~0) ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from true [2018-10-26 23:14:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:14:23,481 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:14:23,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:14:23,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:14:23,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:14:23,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:14:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-10-26 23:14:23,496 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 8 states. [2018-10-26 23:14:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:14:25,591 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-10-26 23:14:25,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:14:25,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-26 23:14:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:14:25,632 INFO L225 Difference]: With dead ends: 18 [2018-10-26 23:14:25,633 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:14:25,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-10-26 23:14:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:14:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:14:25,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:14:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:14:25,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-10-26 23:14:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:14:25,634 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:14:25,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:14:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:14:25,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:14:25,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:14:47,429 WARN L179 SmtUtils]: Spent 21.74 s on a formula simplification that was a NOOP. DAG size: 36 [2018-10-26 23:15:08,974 WARN L179 SmtUtils]: Spent 21.53 s on a formula simplification that was a NOOP. DAG size: 30 [2018-10-26 23:15:56,719 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:982) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 31 more [2018-10-26 23:15:56,722 INFO L168 Benchmark]: Toolchain (without parser) took 216500.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.9 MB in the beginning and 1.0 GB in the end (delta: -84.4 MB). Peak memory consumption was 73.9 MB. Max. memory is 11.5 GB. [2018-10-26 23:15:56,723 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. [2018-10-26 23:15:56,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:15:56,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.43 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:15:56,725 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:15:56,725 INFO L168 Benchmark]: RCFGBuilder took 3209.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:15:56,726 INFO L168 Benchmark]: TraceAbstraction took 213021.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:15:56,740 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 220.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 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 24.43 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3209.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 213021.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...