./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_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_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................. 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_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:14:26,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:14:26,199 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:14:26,205 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:14:26,205 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:14:26,206 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:14:26,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:14:26,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:14:26,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:14:26,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:14:26,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:14:26,208 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:14:26,209 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:14:26,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:14:26,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:14:26,210 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:14:26,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:14:26,211 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:14:26,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:14:26,213 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:14:26,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:14:26,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:14:26,215 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:14:26,215 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:14:26,215 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:14:26,216 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:14:26,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:14:26,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:14:26,217 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:14:26,217 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:14:26,218 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:14:26,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:14:26,218 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:14:26,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:14:26,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:14:26,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:14:26,219 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 05:14:26,226 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:14:26,226 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:14:26,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:14:26,226 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:14:26,226 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:14:26,227 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 05:14:26,227 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:14:26,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:14:26,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:14:26,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:14:26,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:14:26,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 05:14:26,229 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_b7bcf5f4-26db-4195-9388-973200adac51/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-12-02 05:14:26,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:14:26,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:14:26,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:14:26,260 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:14:26,260 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:14:26,261 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:26,297 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/5b6423aad/91764921999042229462fb74c0254869/FLAG2c705faf9 [2018-12-02 05:14:26,712 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:14:26,712 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:26,716 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/5b6423aad/91764921999042229462fb74c0254869/FLAG2c705faf9 [2018-12-02 05:14:26,724 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/5b6423aad/91764921999042229462fb74c0254869 [2018-12-02 05:14:26,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:14:26,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:14:26,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:14:26,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:14:26,729 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:14:26,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26, skipping insertion in model container [2018-12-02 05:14:26,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:14:26,745 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:14:26,838 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:14:26,840 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:14:26,854 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:14:26,866 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:14:26,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26 WrapperNode [2018-12-02 05:14:26,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:14:26,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:14:26,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:14:26,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:14:26,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:14:26,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:14:26,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:14:26,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:14:26,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... [2018-12-02 05:14:26,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:14:26,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:14:26,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:14:26,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:14:26,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:14:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 05:14:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-02 05:14:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:14:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:14:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:14:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:14:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 05:14:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 05:14:26,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 05:14:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:14:27,093 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:14:27,093 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 05:14:27,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:27 BoogieIcfgContainer [2018-12-02 05:14:27,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:14:27,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:14:27,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:14:27,096 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:14:27,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:14:26" (1/3) ... [2018-12-02 05:14:27,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fc458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:14:27, skipping insertion in model container [2018-12-02 05:14:27,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:26" (2/3) ... [2018-12-02 05:14:27,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fc458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:14:27, skipping insertion in model container [2018-12-02 05:14:27,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:27" (3/3) ... [2018-12-02 05:14:27,098 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:27,104 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:14:27,107 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:14:27,116 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:14:27,135 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:14:27,135 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:14:27,135 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:14:27,135 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:14:27,135 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:14:27,135 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:14:27,135 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:14:27,135 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:14:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-02 05:14:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:14:27,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:27,149 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 05:14:27,151 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:27,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2127055292, now seen corresponding path program 1 times [2018-12-02 05:14:27,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:14:27,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:27,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,183 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:14:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:27,237 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 05:14:27,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:27,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:14:27,238 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:14:27,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 05:14:27,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 05:14:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:14:27,250 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-02 05:14:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:27,263 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-02 05:14:27,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 05:14:27,264 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 05:14:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:27,269 INFO L225 Difference]: With dead ends: 79 [2018-12-02 05:14:27,269 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 05:14:27,271 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 05:14:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 05:14:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 05:14:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 05:14:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 05:14:27,296 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-02 05:14:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:27,297 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 05:14:27,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 05:14:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 05:14:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 05:14:27,299 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:27,299 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 05:14:27,299 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:27,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1720731955, now seen corresponding path program 1 times [2018-12-02 05:14:27,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:14:27,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:27,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,301 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:14:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:27,349 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 05:14:27,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:27,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:14:27,350 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:14:27,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:14:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:14:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:27,351 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 05:14:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:27,370 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 05:14:27,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:14:27,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 05:14:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:27,372 INFO L225 Difference]: With dead ends: 59 [2018-12-02 05:14:27,372 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 05:14:27,373 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 05:14:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 05:14:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 05:14:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 05:14:27,378 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-02 05:14:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:27,378 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 05:14:27,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:14:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 05:14:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 05:14:27,379 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:27,379 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 05:14:27,379 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:27,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash 185784867, now seen corresponding path program 1 times [2018-12-02 05:14:27,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:14:27,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:27,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,380 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:14:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:27,419 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 05:14:27,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:27,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:14:27,420 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:14:27,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:14:27,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:14:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:27,420 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-02 05:14:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:27,442 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-02 05:14:27,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:14:27,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 05:14:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:27,443 INFO L225 Difference]: With dead ends: 63 [2018-12-02 05:14:27,443 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 05:14:27,443 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 05:14:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-02 05:14:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 05:14:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 05:14:27,447 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-02 05:14:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:27,447 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 05:14:27,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:14:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 05:14:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 05:14:27,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:27,448 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 05:14:27,448 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:27,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1611166492, now seen corresponding path program 1 times [2018-12-02 05:14:27,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:14:27,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:27,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:14:27,449 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:14:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:14:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:14:27,491 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:14:27,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:14:27 BoogieIcfgContainer [2018-12-02 05:14:27,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:14:27,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:14:27,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:14:27,510 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:14:27,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:27" (3/4) ... [2018-12-02 05:14:27,512 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 05:14:27,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:14:27,513 INFO L168 Benchmark]: Toolchain (without parser) took 786.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -102.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,514 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:14:27,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.44 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.95 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,515 INFO L168 Benchmark]: Boogie Preprocessor took 45.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,515 INFO L168 Benchmark]: RCFGBuilder took 167.80 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,516 INFO L168 Benchmark]: TraceAbstraction took 415.20 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: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:27,516 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:14:27,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.44 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.95 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 167.80 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 415.20 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: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578691] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578691, __fpclassify_float(x)=0, x=0, y=4286578691] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=0, \old(y)=4286578691, \result=4286578691, x=0, y=4286578691] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578691, x=0, y=4286578691] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578691, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578691] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578691, x=0, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 05:14:28,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:14:28,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:14:28,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:14:28,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:14:28,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:14:28,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:14:28,840 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:14:28,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:14:28,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:14:28,842 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:14:28,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:14:28,843 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:14:28,844 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:14:28,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:14:28,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:14:28,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:14:28,846 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:14:28,848 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:14:28,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:14:28,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:14:28,849 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:14:28,851 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:14:28,851 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:14:28,851 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:14:28,852 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:14:28,852 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:14:28,853 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:14:28,853 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:14:28,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:14:28,854 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:14:28,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:14:28,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:14:28,854 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:14:28,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:14:28,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:14:28,855 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 05:14:28,864 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:14:28,865 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:14:28,865 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:14:28,865 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:14:28,866 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:14:28,866 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:14:28,866 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:14:28,866 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:14:28,866 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:14:28,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:14:28,867 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:14:28,867 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:14:28,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:14:28,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:14:28,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:14:28,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:14:28,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:14:28,869 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:14:28,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:14:28,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:14:28,870 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 05:14:28,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:14:28,870 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 05:14:28,870 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 05:14:28,870 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_b7bcf5f4-26db-4195-9388-973200adac51/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-12-02 05:14:28,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:14:28,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:14:28,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:14:28,908 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:14:28,908 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:14:28,908 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:28,947 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/80ba85783/1f3e727c287c40daad68e632203a168b/FLAGe046edc3a [2018-12-02 05:14:29,331 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:14:29,331 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:29,335 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/80ba85783/1f3e727c287c40daad68e632203a168b/FLAGe046edc3a [2018-12-02 05:14:29,343 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/data/80ba85783/1f3e727c287c40daad68e632203a168b [2018-12-02 05:14:29,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:14:29,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:14:29,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:14:29,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:14:29,348 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:14:29,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29, skipping insertion in model container [2018-12-02 05:14:29,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:14:29,370 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:14:29,473 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:14:29,476 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:14:29,492 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:14:29,506 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:14:29,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29 WrapperNode [2018-12-02 05:14:29,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:14:29,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:14:29,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:14:29,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:14:29,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:14:29,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:14:29,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:14:29,523 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:14:29,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... [2018-12-02 05:14:29,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:14:29,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:14:29,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:14:29,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:14:29,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:14:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:14:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-02 05:14:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-02 05:14:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-02 05:14:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:14:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:14:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-02 05:14:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-02 05:14:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:14:29,734 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:14:29,768 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:14:29,771 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:14:29,771 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 05:14:29,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:29 BoogieIcfgContainer [2018-12-02 05:14:29,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:14:29,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:14:29,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:14:29,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:14:29,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:14:29" (1/3) ... [2018-12-02 05:14:29,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0d6317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:14:29, skipping insertion in model container [2018-12-02 05:14:29,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:14:29" (2/3) ... [2018-12-02 05:14:29,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0d6317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:14:29, skipping insertion in model container [2018-12-02 05:14:29,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:29" (3/3) ... [2018-12-02 05:14:29,776 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-12-02 05:14:29,782 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:14:29,786 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:14:29,794 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:14:29,810 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:14:29,810 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:14:29,810 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:14:29,810 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:14:29,811 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:14:29,811 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:14:29,811 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:14:29,811 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:14:29,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:14:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 05:14:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 05:14:29,823 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:29,824 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] [2018-12-02 05:14:29,825 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:29,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash 148552213, now seen corresponding path program 1 times [2018-12-02 05:14:29,831 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:29,831 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:29,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:29,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:29,885 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 05:14:29,885 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:29,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:29,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:14:29,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 05:14:29,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 05:14:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:14:29,905 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 05:14:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:29,918 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-02 05:14:29,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 05:14:29,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 05:14:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:29,925 INFO L225 Difference]: With dead ends: 75 [2018-12-02 05:14:29,925 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 05:14:29,927 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 05:14:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 05:14:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 05:14:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 05:14:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-02 05:14:29,951 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-02 05:14:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:29,951 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-02 05:14:29,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 05:14:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-02 05:14:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:14:29,952 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:29,952 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 05:14:29,952 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:29,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1171864516, now seen corresponding path program 1 times [2018-12-02 05:14:29,953 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:29,953 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:29,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:29,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:30,002 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 05:14:30,002 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:30,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:30,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:14:30,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:14:30,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:14:30,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:30,011 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-02 05:14:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:30,034 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-02 05:14:30,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:14:30,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-02 05:14:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:30,036 INFO L225 Difference]: With dead ends: 56 [2018-12-02 05:14:30,037 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 05:14:30,037 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 05:14:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 05:14:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:14:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-02 05:14:30,042 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-02 05:14:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:30,042 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-02 05:14:30,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:14:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-02 05:14:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 05:14:30,043 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:30,043 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 05:14:30,043 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:30,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1456590866, now seen corresponding path program 1 times [2018-12-02 05:14:30,044 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:30,044 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:30,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:30,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:30,147 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 05:14:30,147 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:30,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:30,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:14:30,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:14:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:14:30,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:14:30,155 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-02 05:14:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:30,510 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-02 05:14:30,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:14:30,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 05:14:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:30,512 INFO L225 Difference]: With dead ends: 60 [2018-12-02 05:14:30,512 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 05:14:30,512 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:14:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 05:14:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 05:14:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 05:14:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-02 05:14:30,516 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-02 05:14:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:30,516 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-02 05:14:30,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:14:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-02 05:14:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 05:14:30,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:30,517 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:14:30,517 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:30,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1971562729, now seen corresponding path program 1 times [2018-12-02 05:14:30,517 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:30,518 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:30,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:30,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:14:30,566 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:30,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:30,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:14:30,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:14:30,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:14:30,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:30,573 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-02 05:14:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:30,587 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-02 05:14:30,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:14:30,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 05:14:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:30,588 INFO L225 Difference]: With dead ends: 56 [2018-12-02 05:14:30,588 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 05:14:30,589 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:14:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 05:14:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 05:14:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:14:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 05:14:30,592 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-02 05:14:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:30,592 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 05:14:30,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:14:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 05:14:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 05:14:30,593 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:30,593 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 05:14:30,593 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:30,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:30,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1323623109, now seen corresponding path program 1 times [2018-12-02 05:14:30,594 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:30,594 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/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 05:14:30,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:30,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 05:14:30,709 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:30,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:30,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:14:30,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:14:30,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:14:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:14:30,717 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-02 05:14:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:31,198 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-02 05:14:31,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:14:31,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-02 05:14:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:31,199 INFO L225 Difference]: With dead ends: 58 [2018-12-02 05:14:31,199 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 05:14:31,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:14:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 05:14:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 05:14:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 05:14:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-02 05:14:31,202 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-02 05:14:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:31,202 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-02 05:14:31,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:14:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-02 05:14:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:14:31,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:31,203 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 05:14:31,203 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:31,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash 207693948, now seen corresponding path program 1 times [2018-12-02 05:14:31,204 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:31,204 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 05:14:31,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:31,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:14:31,285 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:31,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:31,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:14:31,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:14:31,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:14:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:14:31,293 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-02 05:14:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:31,344 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 05:14:31,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 05:14:31,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-02 05:14:31,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:31,345 INFO L225 Difference]: With dead ends: 51 [2018-12-02 05:14:31,345 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 05:14:31,345 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:14:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 05:14:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 05:14:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 05:14:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-02 05:14:31,348 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-02 05:14:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:31,348 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-02 05:14:31,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:14:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-02 05:14:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:14:31,349 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:31,349 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 05:14:31,349 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:31,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:31,349 INFO L82 PathProgramCache]: Analyzing trace with hash -601652678, now seen corresponding path program 1 times [2018-12-02 05:14:31,349 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:31,350 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-02 05:14:31,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:31,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:14:31,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:31,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:31,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 05:14:31,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:14:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:14:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:14:31,450 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-02 05:14:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:31,571 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-02 05:14:31,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:14:31,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 05:14:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:31,572 INFO L225 Difference]: With dead ends: 38 [2018-12-02 05:14:31,572 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 05:14:31,573 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:14:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 05:14:31,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-02 05:14:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 05:14:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-02 05:14:31,576 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-02 05:14:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:31,577 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-02 05:14:31,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:14:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-02 05:14:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 05:14:31,578 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:14:31,578 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1] [2018-12-02 05:14:31,578 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:14:31,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:14:31,578 INFO L82 PathProgramCache]: Analyzing trace with hash -193082209, now seen corresponding path program 1 times [2018-12-02 05:14:31,579 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 05:14:31,579 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-02 05:14:31,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:14:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:14:31,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:14:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 05:14:31,787 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:14:31,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:14:31,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-02 05:14:31,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 05:14:31,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 05:14:31,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:14:31,795 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-12-02 05:14:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:14:32,130 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-12-02 05:14:32,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 05:14:32,131 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-02 05:14:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:14:32,131 INFO L225 Difference]: With dead ends: 35 [2018-12-02 05:14:32,131 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 05:14:32,132 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:14:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 05:14:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 05:14:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 05:14:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 05:14:32,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-02 05:14:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:14:32,133 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 05:14:32,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 05:14:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 05:14:32,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 05:14:32,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 05:14:32,247 INFO L451 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-12-02 05:14:32,247 INFO L448 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L444 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L444 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 05:14:32,248 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 05:14:32,249 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L448 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-12-02 05:14:32,249 INFO L444 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L444 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-12-02 05:14:32,250 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-12-02 05:14:32,250 INFO L448 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2018-12-02 05:14:32,251 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-12-02 05:14:32,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:14:32 BoogieIcfgContainer [2018-12-02 05:14:32,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:14:32,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:14:32,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:14:32,259 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:14:32,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:14:29" (3/4) ... [2018-12-02 05:14:32,262 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 05:14:32,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-12-02 05:14:32,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 05:14:32,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 05:14:32,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-02 05:14:32,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-02 05:14:32,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-02 05:14:32,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-02 05:14:32,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 05:14:32,287 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-02 05:14:32,287 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 05:14:32,302 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7bcf5f4-26db-4195-9388-973200adac51/bin-2019/utaipan/witness.graphml [2018-12-02 05:14:32,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:14:32,303 INFO L168 Benchmark]: Toolchain (without parser) took 2958.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 836.6 MB in the end (delta: 108.1 MB). Peak memory consumption was 252.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:32,304 INFO L168 Benchmark]: CDTParser took 0.16 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 05:14:32,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.68 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:32,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:32,305 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 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 05:14:32,306 INFO L168 Benchmark]: RCFGBuilder took 227.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:32,306 INFO L168 Benchmark]: TraceAbstraction took 2486.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.6 MB in the end (delta: 278.0 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. [2018-12-02 05:14:32,306 INFO L168 Benchmark]: Witness Printer took 43.81 ms. Allocated memory is still 1.2 GB. Free memory is still 836.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:14:32,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.68 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.41 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. * RCFGBuilder took 227.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2486.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.6 MB in the end (delta: 278.0 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.81 ms. Allocated memory is still 1.2 GB. Free memory is still 836.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 296 SDtfs, 121 SDslu, 975 SDs, 0 SdLazy, 365 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20350 SizeOfPredicates, 21 NumberOfNonLiveVariables, 650 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...