./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/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 fddb92276d9c39d57f5b99be31dfd08cb5ab054d ........................................................................................................................................................................................................................................... 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_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/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 fddb92276d9c39d57f5b99be31dfd08cb5ab054d ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 13:49:55,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 13:49:55,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 13:49:55,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 13:49:55,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 13:49:55,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 13:49:55,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 13:49:55,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 13:49:55,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 13:49:55,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 13:49:55,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 13:49:55,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 13:49:55,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 13:49:55,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 13:49:55,839 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 13:49:55,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 13:49:55,840 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 13:49:55,841 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 13:49:55,842 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 13:49:55,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 13:49:55,843 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 13:49:55,844 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 13:49:55,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 13:49:55,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 13:49:55,845 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 13:49:55,846 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 13:49:55,846 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 13:49:55,847 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 13:49:55,847 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 13:49:55,848 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 13:49:55,848 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 13:49:55,848 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 13:49:55,848 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 13:49:55,848 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 13:49:55,849 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 13:49:55,849 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 13:49:55,849 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 13:49:55,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 13:49:55,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 13:49:55,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 13:49:55,857 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 13:49:55,857 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 13:49:55,857 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 13:49:55,858 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 13:49:55,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 13:49:55,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 13:49:55,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 13:49:55,859 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 13:49:55,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 13:49:55,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 13:49:55,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 13:49:55,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:49:55,861 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 13:49:55,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 13:49:55,862 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_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/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 -> fddb92276d9c39d57f5b99be31dfd08cb5ab054d [2018-12-02 13:49:55,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 13:49:55,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 13:49:55,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 13:49:55,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 13:49:55,892 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 13:49:55,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-02 13:49:55,928 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/1a3558734/cfaffb5006d7455e8858376a26a8a609/FLAGe9245fb5e [2018-12-02 13:49:56,294 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 13:49:56,295 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-02 13:49:56,299 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/1a3558734/cfaffb5006d7455e8858376a26a8a609/FLAGe9245fb5e [2018-12-02 13:49:56,662 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/1a3558734/cfaffb5006d7455e8858376a26a8a609 [2018-12-02 13:49:56,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 13:49:56,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 13:49:56,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 13:49:56,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 13:49:56,669 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 13:49:56,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1782ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56, skipping insertion in model container [2018-12-02 13:49:56,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 13:49:56,685 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 13:49:56,767 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:49:56,770 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 13:49:56,779 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:49:56,786 INFO L195 MainTranslator]: Completed translation [2018-12-02 13:49:56,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56 WrapperNode [2018-12-02 13:49:56,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 13:49:56,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 13:49:56,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 13:49:56,787 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 13:49:56,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 13:49:56,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 13:49:56,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 13:49:56,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 13:49:56,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... [2018-12-02 13:49:56,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 13:49:56,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 13:49:56,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 13:49:56,810 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 13:49:56,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:49:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 13:49:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 13:49:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 13:49:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 13:49:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 13:49:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 13:49:56,945 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 13:49:56,945 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 13:49:56,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:56 BoogieIcfgContainer [2018-12-02 13:49:56,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 13:49:56,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 13:49:56,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 13:49:56,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 13:49:56,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:49:56" (1/3) ... [2018-12-02 13:49:56,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2717ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:56, skipping insertion in model container [2018-12-02 13:49:56,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:56" (2/3) ... [2018-12-02 13:49:56,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2717ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:49:56, skipping insertion in model container [2018-12-02 13:49:56,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:56" (3/3) ... [2018-12-02 13:49:56,950 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4_true-unreach-call_true-termination.i [2018-12-02 13:49:56,955 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 13:49:56,959 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 13:49:56,969 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 13:49:56,987 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 13:49:56,987 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 13:49:56,987 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 13:49:56,987 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 13:49:56,987 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 13:49:56,987 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 13:49:56,987 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 13:49:56,987 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 13:49:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-02 13:49:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 13:49:57,000 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:49:57,001 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:49:57,002 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:49:57,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:49:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-02 13:49:57,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 13:49:57,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:49:57,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:49:57,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:49:57,035 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 13:49:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 13:49:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 13:49:57,069 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 13:49:57,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:49:57 BoogieIcfgContainer [2018-12-02 13:49:57,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 13:49:57,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 13:49:57,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 13:49:57,083 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 13:49:57,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:49:56" (3/4) ... [2018-12-02 13:49:57,085 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 13:49:57,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 13:49:57,086 INFO L168 Benchmark]: Toolchain (without parser) took 420.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:49:57,087 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:49:57,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.91 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 13:49:57,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.67 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:49:57,088 INFO L168 Benchmark]: Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:49:57,088 INFO L168 Benchmark]: RCFGBuilder took 135.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -118.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-02 13:49:57,088 INFO L168 Benchmark]: TraceAbstraction took 136.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-02 13:49:57,089 INFO L168 Benchmark]: Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:49:57,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.91 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.67 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 135.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -118.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 136.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=0, x=0] [L15] __VERIFIER_error() VAL [IN=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 13:49:58,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 13:49:58,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 13:49:58,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 13:49:58,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 13:49:58,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 13:49:58,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 13:49:58,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 13:49:58,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 13:49:58,470 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 13:49:58,471 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 13:49:58,471 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 13:49:58,471 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 13:49:58,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 13:49:58,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 13:49:58,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 13:49:58,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 13:49:58,474 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 13:49:58,475 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 13:49:58,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 13:49:58,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 13:49:58,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 13:49:58,478 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 13:49:58,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 13:49:58,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 13:49:58,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 13:49:58,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 13:49:58,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 13:49:58,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 13:49:58,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 13:49:58,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 13:49:58,482 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 13:49:58,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 13:49:58,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 13:49:58,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 13:49:58,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 13:49:58,483 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 13:49:58,493 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 13:49:58,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 13:49:58,494 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 13:49:58,494 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 13:49:58,494 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 13:49:58,495 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 13:49:58,495 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 13:49:58,495 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 13:49:58,495 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 13:49:58,495 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 13:49:58,496 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 13:49:58,496 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 13:49:58,496 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 13:49:58,496 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 13:49:58,496 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 13:49:58,497 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 13:49:58,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 13:49:58,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:49:58,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 13:49:58,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 13:49:58,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 13:49:58,499 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 13:49:58,499 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 13:49:58,499 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 13:49:58,500 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 13:49:58,500 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_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/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 -> fddb92276d9c39d57f5b99be31dfd08cb5ab054d [2018-12-02 13:49:58,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 13:49:58,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 13:49:58,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 13:49:58,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 13:49:58,535 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 13:49:58,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-02 13:49:58,574 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/cdd5d97de/073aa33c53d74c46b42c14d35c67aa02/FLAG7910e39a5 [2018-12-02 13:49:58,970 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 13:49:58,970 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-02 13:49:58,974 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/cdd5d97de/073aa33c53d74c46b42c14d35c67aa02/FLAG7910e39a5 [2018-12-02 13:49:58,981 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/data/cdd5d97de/073aa33c53d74c46b42c14d35c67aa02 [2018-12-02 13:49:58,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 13:49:58,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 13:49:58,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 13:49:58,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 13:49:58,987 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 13:49:58,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:58" (1/1) ... [2018-12-02 13:49:58,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b45ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:58, skipping insertion in model container [2018-12-02 13:49:58,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:58" (1/1) ... [2018-12-02 13:49:58,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 13:49:59,001 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 13:49:59,085 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:49:59,089 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 13:49:59,099 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:49:59,107 INFO L195 MainTranslator]: Completed translation [2018-12-02 13:49:59,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59 WrapperNode [2018-12-02 13:49:59,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 13:49:59,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 13:49:59,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 13:49:59,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 13:49:59,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 13:49:59,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 13:49:59,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 13:49:59,121 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 13:49:59,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2018-12-02 13:49:59,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 13:49:59,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 13:49:59,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 13:49:59,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 13:49:59,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:49:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 13:49:59,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 13:49:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 13:49:59,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 13:49:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 13:49:59,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 13:50:01,323 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 13:50:01,324 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 13:50:01,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:50:01 BoogieIcfgContainer [2018-12-02 13:50:01,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 13:50:01,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 13:50:01,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 13:50:01,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 13:50:01,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:49:58" (1/3) ... [2018-12-02 13:50:01,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:50:01, skipping insertion in model container [2018-12-02 13:50:01,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (2/3) ... [2018-12-02 13:50:01,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:50:01, skipping insertion in model container [2018-12-02 13:50:01,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:50:01" (3/3) ... [2018-12-02 13:50:01,329 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4_true-unreach-call_true-termination.i [2018-12-02 13:50:01,335 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 13:50:01,339 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 13:50:01,348 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 13:50:01,365 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 13:50:01,365 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 13:50:01,365 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 13:50:01,365 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 13:50:01,366 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 13:50:01,366 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 13:50:01,366 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 13:50:01,366 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 13:50:01,366 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 13:50:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-02 13:50:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 13:50:01,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:50:01,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:50:01,380 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:50:01,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:50:01,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-02 13:50:01,386 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 13:50:01,386 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 13:50:01,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:03:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:03:13,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:03:15,817 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (= c_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse0)))) is different from false [2018-12-02 14:03:17,867 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (= c_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0))) (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse0)))) is different from true [2018-12-02 14:03:30,300 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))) (fp.lt v_prenex_1 .cse0)))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) (_ +zero 8 24))))))) is different from false [2018-12-02 14:03:32,378 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq v_prenex_1 (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) v_prenex_1) v_prenex_1) v_prenex_1)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) v_prenex_1) v_prenex_1) v_prenex_1) v_prenex_1)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))) (fp.lt v_prenex_1 .cse0)))) (exists ((main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq main_~IN~0 (_ +zero 8 24)) (fp.lt main_~IN~0 .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) main_~IN~0) main_~IN~0) main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) main_~IN~0) main_~IN~0) main_~IN~0) main_~IN~0)) (_ +zero 8 24))))))) is different from true [2018-12-02 14:03:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:03:32,382 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:03:32,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:03:32,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 14:03:32,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:03:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:03:32,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-12-02 14:03:32,414 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-12-02 14:03:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:03:32,424 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-12-02 14:03:32,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:03:32,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-12-02 14:03:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:03:32,429 INFO L225 Difference]: With dead ends: 18 [2018-12-02 14:03:32,429 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 14:03:32,431 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-12-02 14:03:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 14:03:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 14:03:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 14:03:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 14:03:32,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-12-02 14:03:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:03:32,447 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 14:03:32,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:03:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 14:03:32,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 14:03:32,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 14:03:32,481 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 14:03:32,481 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:03:32,481 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:03:32,481 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 14:03:32,481 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 14:03:32,481 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 14:03:32,482 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-02 14:03:32,482 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-12-02 14:03:32,482 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-12-02 14:03:32,482 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-12-02 14:03:32,482 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-12-02 14:03:32,482 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-12-02 14:03:32,483 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-12-02 14:03:32,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:03:32 BoogieIcfgContainer [2018-12-02 14:03:32,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:03:32,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:03:32,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:03:32,485 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:03:32,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:50:01" (3/4) ... [2018-12-02 14:03:32,489 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 14:03:32,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 14:03:32,495 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 14:03:32,498 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 14:03:32,498 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 14:03:32,498 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 14:03:32,521 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0d68c4ca-8694-4ba7-bb51-890ea9a403ab/bin-2019/utaipan/witness.graphml [2018-12-02 14:03:32,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:03:32,522 INFO L168 Benchmark]: Toolchain (without parser) took 813538.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -115.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-02 14:03:32,523 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:03:32,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.51 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:03:32,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.96 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:03:32,523 INFO L168 Benchmark]: Boogie Preprocessor took 13.54 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 14:03:32,524 INFO L168 Benchmark]: RCFGBuilder took 2189.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-02 14:03:32,524 INFO L168 Benchmark]: TraceAbstraction took 811160.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2018-12-02 14:03:32,524 INFO L168 Benchmark]: Witness Printer took 36.24 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. [2018-12-02 14:03:32,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.51 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.96 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.54 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2189.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 811160.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. * Witness Printer took 36.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 811.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 792.1s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 2 QuantifiedInterpolants, 1224 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...