./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_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:54,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:33:54,032 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:33:54,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:33:54,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:33:54,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:33:54,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:33:54,041 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:33:54,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:33:54,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:33:54,043 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:33:54,043 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:33:54,043 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:33:54,044 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:33:54,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:33:54,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:33:54,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:33:54,046 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:33:54,047 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:33:54,048 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:33:54,048 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:33:54,049 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:33:54,050 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:33:54,050 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:33:54,051 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:33:54,051 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:33:54,052 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:33:54,052 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:33:54,052 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:33:54,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:33:54,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:33:54,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:33:54,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:33:54,054 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:33:54,054 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:33:54,055 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:33:54,055 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 11:33:54,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:33:54,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:33:54,064 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:33:54,064 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:33:54,064 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:33:54,064 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:33:54,064 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:33:54,064 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 11:33:54,064 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:33:54,065 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:33:54,065 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 11:33:54,065 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 11:33:54,065 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:33:54,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:33:54,065 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:33:54,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:33:54,066 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:33:54,067 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:33:54,067 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 11:33:54,068 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_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:54,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:33:54,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:33:54,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:33:54,099 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:33:54,099 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:33:54,100 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:54,141 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/f5751420d/8c8d78b8a53341da8faabcb7ce4f9ea2/FLAG0bfb47e23 [2018-12-09 11:33:54,559 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:33:54,560 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:54,563 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/f5751420d/8c8d78b8a53341da8faabcb7ce4f9ea2/FLAG0bfb47e23 [2018-12-09 11:33:54,571 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/f5751420d/8c8d78b8a53341da8faabcb7ce4f9ea2 [2018-12-09 11:33:54,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:33:54,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:33:54,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:33:54,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:33:54,576 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:33:54,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359bc049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54, skipping insertion in model container [2018-12-09 11:33:54,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:33:54,592 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:33:54,676 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:33:54,678 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:33:54,687 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:33:54,695 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:33:54,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54 WrapperNode [2018-12-09 11:33:54,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:33:54,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:33:54,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:33:54,696 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:33:54,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:33:54,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:33:54,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:33:54,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:33:54,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... [2018-12-09 11:33:54,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:33:54,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:33:54,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:33:54,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:33:54,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:33:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:33:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:33:54,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:33:54,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:33:54,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:33:54,864 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:33:54,865 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 11:33:54,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:54 BoogieIcfgContainer [2018-12-09 11:33:54,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:33:54,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:33:54,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:33:54,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:33:54,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:33:54" (1/3) ... [2018-12-09 11:33:54,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412edd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:33:54, skipping insertion in model container [2018-12-09 11:33:54,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:54" (2/3) ... [2018-12-09 11:33:54,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412edd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:33:54, skipping insertion in model container [2018-12-09 11:33:54,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:54" (3/3) ... [2018-12-09 11:33:54,871 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:54,877 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:33:54,881 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:33:54,893 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:33:54,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:33:54,918 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:33:54,918 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:33:54,918 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:33:54,918 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:33:54,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:33:54,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:33:54,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:33:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-09 11:33:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 11:33:54,932 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:33:54,932 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:33:54,933 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:33:54,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:33:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-09 11:33:54,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:33:54,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:33:54,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:33:54,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:33:54,967 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:33:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:33:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:33:55,001 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 11:33:55,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:33:55 BoogieIcfgContainer [2018-12-09 11:33:55,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:33:55,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:33:55,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:33:55,014 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:33:55,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:54" (3/4) ... [2018-12-09 11:33:55,016 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 11:33:55,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:33:55,017 INFO L168 Benchmark]: Toolchain (without parser) took 443.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -148.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:55,018 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-09 11:33:55,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.54 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:55,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.47 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:55,019 INFO L168 Benchmark]: Boogie Preprocessor took 14.45 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:55,019 INFO L168 Benchmark]: RCFGBuilder took 138.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:55,019 INFO L168 Benchmark]: TraceAbstraction took 147.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:55,020 INFO L168 Benchmark]: Witness Printer took 2.75 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. [2018-12-09 11:33:55,021 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.54 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.47 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.45 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 138.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 147.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0, x=0] [L14] COND TRUE !(result >= 0.0f && result < 1.39844f) 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 [2018-12-09 11:33:56,312 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:33:56,313 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:33:56,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:33:56,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:33:56,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:33:56,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:33:56,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:33:56,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:33:56,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:33:56,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:33:56,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:33:56,323 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:33:56,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:33:56,324 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:33:56,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:33:56,325 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:33:56,326 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:33:56,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:33:56,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:33:56,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:33:56,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:33:56,330 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:33:56,330 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:33:56,330 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:33:56,331 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:33:56,331 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:33:56,332 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:33:56,332 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:33:56,333 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:33:56,333 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:33:56,333 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:33:56,333 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:33:56,333 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:33:56,334 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:33:56,334 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:33:56,335 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 11:33:56,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:33:56,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:33:56,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:33:56,342 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:33:56,343 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:33:56,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:33:56,343 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:33:56,343 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:33:56,343 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:33:56,343 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:33:56,344 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:33:56,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:33:56,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:33:56,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:33:56,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:33:56,346 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 11:33:56,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:33:56,347 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 11:33:56,347 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 11:33:56,347 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_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:56,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:33:56,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:33:56,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:33:56,379 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:33:56,379 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:33:56,379 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:56,422 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/8a1c3f78f/58c68e1473e847f190699a6d0b8a7ce5/FLAGa90c88f67 [2018-12-09 11:33:56,733 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:33:56,733 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/sv-benchmarks/c/floats-cdfpl/square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:56,737 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/8a1c3f78f/58c68e1473e847f190699a6d0b8a7ce5/FLAGa90c88f67 [2018-12-09 11:33:56,745 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/data/8a1c3f78f/58c68e1473e847f190699a6d0b8a7ce5 [2018-12-09 11:33:56,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:33:56,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:33:56,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:33:56,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:33:56,750 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:33:56,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60337f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56, skipping insertion in model container [2018-12-09 11:33:56,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:33:56,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:33:56,849 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:33:56,853 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:33:56,862 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:33:56,871 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:33:56,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56 WrapperNode [2018-12-09 11:33:56,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:33:56,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:33:56,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:33:56,872 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:33:56,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:33:56,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:33:56,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:33:56,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:33:56,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... [2018-12-09 11:33:56,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:33:56,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:33:56,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:33:56,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:33:56,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:33:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:33:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:33:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:33:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:33:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:33:59,080 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:33:59,081 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 11:33:59,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:59 BoogieIcfgContainer [2018-12-09 11:33:59,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:33:59,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:33:59,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:33:59,083 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:33:59,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:33:56" (1/3) ... [2018-12-09 11:33:59,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185627ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:33:59, skipping insertion in model container [2018-12-09 11:33:59,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:33:56" (2/3) ... [2018-12-09 11:33:59,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185627ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:33:59, skipping insertion in model container [2018-12-09 11:33:59,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:59" (3/3) ... [2018-12-09 11:33:59,085 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4_true-unreach-call_true-termination.i [2018-12-09 11:33:59,090 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:33:59,094 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:33:59,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:33:59,120 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:33:59,120 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:33:59,120 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:33:59,120 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:33:59,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:33:59,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:33:59,120 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:33:59,121 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:33:59,121 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:33:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-09 11:33:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 11:33:59,133 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:33:59,133 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:33:59,135 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:33:59,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:33:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2018-12-09 11:33:59,140 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:33:59,140 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/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 [2018-12-09 11:33:59,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:46:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:46:57,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:46:59,854 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 [2018-12-09 11:47:01,901 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 [2018-12-09 11:47:14,317 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 [2018-12-09 11:47:16,380 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 [2018-12-09 11:47:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:47:16,383 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:47:16,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:47:16,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 11:47:16,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:47:16,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:47:16,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-12-09 11:47:16,414 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-12-09 11:47:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:47:16,424 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-12-09 11:47:16,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:47:16,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-12-09 11:47:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:47:16,429 INFO L225 Difference]: With dead ends: 18 [2018-12-09 11:47:16,429 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:47:16,431 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=5, Invalid=1, Unknown=4, NotChecked=2, Total=12 [2018-12-09 11:47:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:47:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:47:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:47:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:47:16,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-12-09 11:47:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:47:16,445 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:47:16,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:47:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:47:16,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:47:16,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 11:47:16,475 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 11:47:16,475 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:47:16,475 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:47:16,475 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 11:47:16,475 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:47:16,475 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 18) the Hoare annotation is: true [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 18) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 18) no Hoare annotation was computed. [2018-12-09 11:47:16,476 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-12-09 11:47:16,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:47:16 BoogieIcfgContainer [2018-12-09 11:47:16,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:47:16,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:47:16,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:47:16,478 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:47:16,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:33:59" (3/4) ... [2018-12-09 11:47:16,481 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:47:16,485 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 11:47:16,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 11:47:16,488 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 11:47:16,488 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 11:47:16,488 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:47:16,509 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94e30512-2eb3-4bca-b71d-16a832cc8186/bin-2019/utaipan/witness.graphml [2018-12-09 11:47:16,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:47:16,510 INFO L168 Benchmark]: Toolchain (without parser) took 799762.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -113.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-12-09 11:47:16,510 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-09 11:47:16,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.12 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:47:16,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.01 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. [2018-12-09 11:47:16,511 INFO L168 Benchmark]: Boogie Preprocessor took 13.15 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. [2018-12-09 11:47:16,511 INFO L168 Benchmark]: RCFGBuilder took 2182.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-09 11:47:16,512 INFO L168 Benchmark]: TraceAbstraction took 797396.54 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:47:16,512 INFO L168 Benchmark]: Witness Printer took 30.97 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. [2018-12-09 11:47:16,513 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.12 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 13.01 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 13.15 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 2182.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 797396.54 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * Witness Printer took 30.97 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, 797.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 778.4s SatisfiabilityAnalysisTime, 18.7s 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...