./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c --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_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/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 b9e27277237c869a286fcb7699394ad2f7d80117 ....................................................................................................................................................................................................................................................................................................................... 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_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/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 b9e27277237c869a286fcb7699394ad2f7d80117 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:18:01,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:18:01,153 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:18:01,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:18:01,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:18:01,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:18:01,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:18:01,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:18:01,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:18:01,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:18:01,163 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:18:01,164 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:18:01,164 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:18:01,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:18:01,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:18:01,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:18:01,166 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:18:01,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:18:01,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:18:01,169 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:18:01,170 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:18:01,170 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:18:01,171 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:18:01,172 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:18:01,172 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:18:01,172 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:18:01,173 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:18:01,173 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:18:01,174 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:18:01,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:18:01,174 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:18:01,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:18:01,175 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:18:01,175 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:18:01,176 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:18:01,176 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:18:01,176 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 06:18:01,183 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:18:01,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:18:01,184 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:18:01,184 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:18:01,184 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:18:01,184 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 06:18:01,185 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:18:01,186 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:18:01,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:18:01,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:18:01,187 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:18:01,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:18:01,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:18:01,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:18:01,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:18:01,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 06:18:01,188 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:18:01,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 06:18:01,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 06:18:01,189 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_c89217eb-1650-445d-ace8-0e3ad4cff412/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 -> b9e27277237c869a286fcb7699394ad2f7d80117 [2018-12-02 06:18:01,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:18:01,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:18:01,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:18:01,216 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:18:01,216 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:18:01,216 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:01,251 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/c7713fa2c/997a754e872e4897b6aae9e857762d64/FLAGedb0ec985 [2018-12-02 06:18:01,587 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:18:01,587 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:01,591 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/c7713fa2c/997a754e872e4897b6aae9e857762d64/FLAGedb0ec985 [2018-12-02 06:18:01,981 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/c7713fa2c/997a754e872e4897b6aae9e857762d64 [2018-12-02 06:18:01,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:18:01,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:18:01,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:18:01,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:18:01,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:18:01,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:01" (1/1) ... [2018-12-02 06:18:01,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:01, skipping insertion in model container [2018-12-02 06:18:01,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:01" (1/1) ... [2018-12-02 06:18:01,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:18:02,005 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:18:02,104 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:18:02,106 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:18:02,123 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:18:02,135 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:18:02,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02 WrapperNode [2018-12-02 06:18:02,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:18:02,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:18:02,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:18:02,136 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:18:02,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:18:02,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:18:02,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:18:02,181 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:18:02,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... [2018-12-02 06:18:02,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:18:02,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:18:02,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:18:02,206 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:18:02,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/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 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 06:18:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:18:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-12-02 06:18:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:18:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:18:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 06:18:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:18:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:18:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:18:02,396 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:18:02,396 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 06:18:02,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:02 BoogieIcfgContainer [2018-12-02 06:18:02,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:18:02,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:18:02,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:18:02,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:18:02,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:18:01" (1/3) ... [2018-12-02 06:18:02,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ab9051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:02, skipping insertion in model container [2018-12-02 06:18:02,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:02" (2/3) ... [2018-12-02 06:18:02,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ab9051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:02, skipping insertion in model container [2018-12-02 06:18:02,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:02" (3/3) ... [2018-12-02 06:18:02,402 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:02,408 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:18:02,413 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:18:02,427 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:18:02,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:18:02,445 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:18:02,446 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:18:02,446 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:18:02,446 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:18:02,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:18:02,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:18:02,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:18:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-02 06:18:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 06:18:02,460 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:02,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:02,461 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:02,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1071653874, now seen corresponding path program 1 times [2018-12-02 06:18:02,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:18:02,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:18:02,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:02,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:18:02,495 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:18:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:02,539 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 06:18:02,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:02,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 06:18:02,541 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:18:02,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 06:18:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 06:18:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:18:02,552 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-12-02 06:18:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:02,565 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2018-12-02 06:18:02,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 06:18:02,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-02 06:18:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:02,572 INFO L225 Difference]: With dead ends: 70 [2018-12-02 06:18:02,572 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 06:18:02,574 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:18:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 06:18:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 06:18:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 06:18:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-12-02 06:18:02,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2018-12-02 06:18:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:02,597 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-12-02 06:18:02,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 06:18:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2018-12-02 06:18:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 06:18:02,598 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:02,598 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:02,598 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:02,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -308920579, now seen corresponding path program 1 times [2018-12-02 06:18:02,599 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:18:02,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:18:02,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:02,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:18:02,599 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:18:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:18:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:18:02,652 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 06:18:02,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:18:02 BoogieIcfgContainer [2018-12-02 06:18:02,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:18:02,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:18:02,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:18:02,670 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:18:02,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:02" (3/4) ... [2018-12-02 06:18:02,672 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 06:18:02,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:18:02,672 INFO L168 Benchmark]: Toolchain (without parser) took 688.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 961.4 MB in the beginning and 1.0 GB in the end (delta: -85.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,673 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:18:02,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.82 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,675 INFO L168 Benchmark]: Boogie Preprocessor took 24.88 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,675 INFO L168 Benchmark]: RCFGBuilder took 190.77 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,675 INFO L168 Benchmark]: TraceAbstraction took 272.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:02,675 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:18:02,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.82 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 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 44.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.88 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 190.77 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 272.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) VAL [\old(x)=6442450946] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=6442450946, x=6442450946] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=6442450946, \result=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L75] RET, EXPR round_double(x) VAL [round_double(x)=6442450946, x=6442450946] [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) VAL [\old(x)=6442450946] [L15] return x != x; VAL [\old(x)=6442450946, \result=0, x=6442450946] [L78] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=6442450946, x=6442450946] [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() VAL [res=6442450946, x=6442450946] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:18:03,947 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:18:03,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:18:03,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:18:03,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:18:03,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:18:03,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:18:03,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:18:03,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:18:03,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:18:03,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:18:03,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:18:03,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:18:03,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:18:03,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:18:03,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:18:03,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:18:03,964 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:18:03,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:18:03,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:18:03,967 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:18:03,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:18:03,969 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:18:03,969 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:18:03,969 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:18:03,970 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:18:03,970 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:18:03,971 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:18:03,971 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:18:03,972 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:18:03,972 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:18:03,972 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:18:03,973 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:18:03,973 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:18:03,973 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:18:03,974 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:18:03,974 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 06:18:03,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:18:03,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:18:03,984 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:18:03,985 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:18:03,985 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:18:03,985 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:18:03,985 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:18:03,985 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:18:03,985 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:18:03,986 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:18:03,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:18:03,986 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:18:03,986 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 06:18:03,987 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 06:18:03,988 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:18:03,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:18:03,988 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 06:18:03,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:18:03,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:18:03,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:18:03,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:18:03,989 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 06:18:03,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:18:03,990 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 06:18:03,990 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 06:18:03,990 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_c89217eb-1650-445d-ace8-0e3ad4cff412/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 -> b9e27277237c869a286fcb7699394ad2f7d80117 [2018-12-02 06:18:04,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:18:04,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:18:04,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:18:04,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:18:04,022 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:18:04,022 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:04,062 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/2672aed69/c04bff17f0e34db8ab284a3546ba3589/FLAGf06d6af52 [2018-12-02 06:18:04,460 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:18:04,460 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/sv-benchmarks/c/float-newlib/double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:04,464 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/2672aed69/c04bff17f0e34db8ab284a3546ba3589/FLAGf06d6af52 [2018-12-02 06:18:04,472 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/data/2672aed69/c04bff17f0e34db8ab284a3546ba3589 [2018-12-02 06:18:04,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:18:04,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:18:04,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:18:04,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:18:04,478 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:18:04,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e2f300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04, skipping insertion in model container [2018-12-02 06:18:04,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:18:04,500 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:18:04,599 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:18:04,604 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:18:04,624 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:18:04,640 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:18:04,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04 WrapperNode [2018-12-02 06:18:04,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:18:04,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:18:04,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:18:04,641 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:18:04,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:18:04,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:18:04,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:18:04,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:18:04,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... [2018-12-02 06:18:04,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:18:04,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:18:04,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:18:04,710 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:18:04,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/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 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 06:18:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:18:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-02 06:18:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-12-02 06:18:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-12-02 06:18:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:18:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:18:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:18:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:18:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 06:18:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:18:04,861 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:18:04,949 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:18:04,949 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 06:18:04,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:04 BoogieIcfgContainer [2018-12-02 06:18:04,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:18:04,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:18:04,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:18:04,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:18:04,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:18:04" (1/3) ... [2018-12-02 06:18:04,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a53f8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:04, skipping insertion in model container [2018-12-02 06:18:04,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:04" (2/3) ... [2018-12-02 06:18:04,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a53f8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:04, skipping insertion in model container [2018-12-02 06:18:04,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:04" (3/3) ... [2018-12-02 06:18:04,954 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031_true-unreach-call.c [2018-12-02 06:18:04,960 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:18:04,964 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:18:04,973 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:18:04,990 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 06:18:04,990 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:18:04,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:18:04,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:18:04,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:18:04,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:18:04,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:18:04,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:18:04,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:18:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-12-02 06:18:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 06:18:05,003 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:05,004 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:05,005 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:05,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash -671872189, now seen corresponding path program 1 times [2018-12-02 06:18:05,010 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:18:05,011 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/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 06:18:05,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:05,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:18:05,074 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 06:18:05,074 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:18:05,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:05,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 06:18:05,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 06:18:05,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 06:18:05,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:18:05,094 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-12-02 06:18:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:05,105 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-12-02 06:18:05,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 06:18:05,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 06:18:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:05,112 INFO L225 Difference]: With dead ends: 68 [2018-12-02 06:18:05,112 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 06:18:05,115 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 06:18:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 06:18:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 06:18:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 06:18:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-12-02 06:18:05,141 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2018-12-02 06:18:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:05,141 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-12-02 06:18:05,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 06:18:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-12-02 06:18:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 06:18:05,142 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:05,142 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:05,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:05,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1325068332, now seen corresponding path program 1 times [2018-12-02 06:18:05,143 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:18:05,143 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 06:18:05,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:05,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:18:05,307 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 06:18:05,308 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:18:05,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:05,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 06:18:05,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 06:18:05,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 06:18:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:18:05,320 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 9 states. [2018-12-02 06:18:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:05,845 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-12-02 06:18:05,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 06:18:05,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-02 06:18:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:05,847 INFO L225 Difference]: With dead ends: 43 [2018-12-02 06:18:05,847 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 06:18:05,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 06:18:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 06:18:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-02 06:18:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 06:18:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-02 06:18:05,853 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2018-12-02 06:18:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:05,854 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-02 06:18:05,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 06:18:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-02 06:18:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 06:18:05,854 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:05,855 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:05,855 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:05,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1627276127, now seen corresponding path program 1 times [2018-12-02 06:18:05,856 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:18:05,856 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 06:18:05,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:05,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:18:06,293 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-12-02 06:18:06,877 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 06:18:06,877 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:18:06,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:06,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 06:18:06,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 06:18:06,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 06:18:06,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:18:06,885 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2018-12-02 06:18:08,097 WARN L180 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-02 06:18:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:08,722 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-12-02 06:18:08,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 06:18:08,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-02 06:18:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:08,723 INFO L225 Difference]: With dead ends: 41 [2018-12-02 06:18:08,723 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 06:18:08,724 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 06:18:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 06:18:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-02 06:18:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 06:18:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-12-02 06:18:08,728 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2018-12-02 06:18:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:08,728 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-12-02 06:18:08,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 06:18:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-12-02 06:18:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 06:18:08,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:08,729 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:08,729 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:08,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:08,730 INFO L82 PathProgramCache]: Analyzing trace with hash -560603808, now seen corresponding path program 1 times [2018-12-02 06:18:08,730 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:18:08,730 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 06:18:08,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:08,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:18:08,881 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 06:18:08,881 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:18:08,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:08,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:18:08,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:18:08,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:18:08,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:18:08,891 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2018-12-02 06:18:09,339 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-12-02 06:18:09,587 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-12-02 06:18:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:09,727 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2018-12-02 06:18:09,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 06:18:09,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-02 06:18:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:09,729 INFO L225 Difference]: With dead ends: 52 [2018-12-02 06:18:09,729 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 06:18:09,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2018-12-02 06:18:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 06:18:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2018-12-02 06:18:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 06:18:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-12-02 06:18:09,733 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-12-02 06:18:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:09,733 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-12-02 06:18:09,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:18:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-12-02 06:18:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 06:18:09,733 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:18:09,733 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:18:09,734 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:18:09,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:18:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1924804585, now seen corresponding path program 1 times [2018-12-02 06:18:09,734 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:18:09,734 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 06:18:09,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:18:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:18:09,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:18:09,911 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 06:18:09,911 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:18:09,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:18:09,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 06:18:09,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 06:18:09,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 06:18:09,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-02 06:18:09,920 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2018-12-02 06:18:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:18:10,737 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-12-02 06:18:10,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 06:18:10,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-12-02 06:18:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:18:10,738 INFO L225 Difference]: With dead ends: 35 [2018-12-02 06:18:10,738 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 06:18:10,739 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-12-02 06:18:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 06:18:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 06:18:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 06:18:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 06:18:10,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-12-02 06:18:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:18:10,739 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 06:18:10,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 06:18:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 06:18:10,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 06:18:10,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 06:18:10,800 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 15) the Hoare annotation is: true [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 15) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 15) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 56) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point round_doubleFINAL(lines 17 64) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point L52(lines 52 53) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2018-12-02 06:18:10,801 INFO L451 ceAbstractionStarter]: At program point round_doubleENTRY(lines 17 64) the Hoare annotation is: true [2018-12-02 06:18:10,801 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 62) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 17 64) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L57-2(lines 57 62) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point round_doubleEXIT(lines 17 64) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (= |round_double_#in~x| round_double_~x) [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 20 25) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 56) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 45) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L30-2(lines 30 31) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2018-12-02 06:18:10,802 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 06:18:10,803 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L444 ceAbstractionStarter]: At program point L78(line 78) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~res~0 .cse0))) [2018-12-02 06:18:10,803 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 66 84) the Hoare annotation is: true [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 78 81) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 66 84) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L444 ceAbstractionStarter]: At program point L75(line 75) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point L75-1(line 75) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-12-02 06:18:10,803 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 66 84) no Hoare annotation was computed. [2018-12-02 06:18:10,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:18:10 BoogieIcfgContainer [2018-12-02 06:18:10,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:18:10,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:18:10,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:18:10,812 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:18:10,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:04" (3/4) ... [2018-12-02 06:18:10,814 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 06:18:10,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-02 06:18:10,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 06:18:10,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-12-02 06:18:10,818 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 06:18:10,822 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-02 06:18:10,822 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-02 06:18:10,822 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 06:18:10,839 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 06:18:10,854 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c89217eb-1650-445d-ace8-0e3ad4cff412/bin-2019/utaipan/witness.graphml [2018-12-02 06:18:10,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:18:10,855 INFO L168 Benchmark]: Toolchain (without parser) took 6380.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.4 MB in the beginning and 879.6 MB in the end (delta: 63.7 MB). Peak memory consumption was 197.4 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,855 INFO L168 Benchmark]: CDTParser took 0.15 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 06:18:10,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.34 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:18:10,856 INFO L168 Benchmark]: Boogie Preprocessor took 52.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,857 INFO L168 Benchmark]: RCFGBuilder took 239.83 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,857 INFO L168 Benchmark]: TraceAbstraction took 5861.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.4 MB in the end (delta: 217.0 MB). Peak memory consumption was 217.0 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,857 INFO L168 Benchmark]: Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 886.4 MB in the beginning and 879.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:18:10,859 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.34 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.83 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: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5861.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.4 MB in the end (delta: 217.0 MB). Peak memory consumption was 217.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.15 ms. Allocated memory is still 1.2 GB. Free memory was 886.4 MB in the beginning and 879.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 157 SDtfs, 121 SDslu, 550 SDs, 0 SdLazy, 205 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 117 ConstructedInterpolants, 22 QuantifiedInterpolants, 20054 SizeOfPredicates, 16 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...