./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_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_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 2e3b677629e69b083ff740542124e952dcae7545 ................................................................................................................................................................................................................................................................................................................... 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_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 2e3b677629e69b083ff740542124e952dcae7545 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:31:27,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:31:27,431 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:31:27,438 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:31:27,439 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:31:27,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:31:27,440 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:31:27,441 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:31:27,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:31:27,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:31:27,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:31:27,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:31:27,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:31:27,445 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:31:27,446 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:31:27,447 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:31:27,447 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:31:27,448 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:31:27,450 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:31:27,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:31:27,451 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:31:27,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:31:27,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:31:27,454 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:31:27,454 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:31:27,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:31:27,455 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:31:27,456 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:31:27,457 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:31:27,457 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:31:27,457 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:31:27,458 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:31:27,458 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:31:27,458 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:31:27,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:31:27,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:31:27,459 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 00:31:27,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:31:27,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:31:27,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:31:27,471 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:31:27,471 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:31:27,471 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 00:31:27,472 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:31:27,473 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:31:27,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:31:27,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:31:27,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:31:27,475 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:31:27,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 00:31:27,475 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_d32930af-4bbe-4a59-b2be-093bbbea731b/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 -> 2e3b677629e69b083ff740542124e952dcae7545 [2018-12-09 00:31:27,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:31:27,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:31:27,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:31:27,507 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:31:27,507 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:31:27,507 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:27,541 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/dbe7b7e94/03f5156691964290a488b18424c6acc2/FLAGb48b869d4 [2018-12-09 00:31:27,954 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:31:27,955 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:27,958 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/dbe7b7e94/03f5156691964290a488b18424c6acc2/FLAGb48b869d4 [2018-12-09 00:31:27,967 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/dbe7b7e94/03f5156691964290a488b18424c6acc2 [2018-12-09 00:31:27,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:31:27,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:31:27,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:31:27,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:31:27,972 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:31:27,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:31:27" (1/1) ... [2018-12-09 00:31:27,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:27, skipping insertion in model container [2018-12-09 00:31:27,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:31:27" (1/1) ... [2018-12-09 00:31:27,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:31:27,989 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:31:28,085 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:31:28,087 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:31:28,103 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:31:28,116 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:31:28,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28 WrapperNode [2018-12-09 00:31:28,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:31:28,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:31:28,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:31:28,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:31:28,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:31:28,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:31:28,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:31:28,166 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:31:28,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... [2018-12-09 00:31:28,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:31:28,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:31:28,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:31:28,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:31:28,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:31:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:31:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:31:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:31:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 00:31:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:31:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:31:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-12-09 00:31:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-12-09 00:31:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 00:31:28,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 00:31:28,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:31:28,374 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:31:28,374 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 00:31:28,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:28 BoogieIcfgContainer [2018-12-09 00:31:28,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:31:28,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:31:28,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:31:28,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:31:28,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:31:27" (1/3) ... [2018-12-09 00:31:28,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e179207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:31:28, skipping insertion in model container [2018-12-09 00:31:28,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:28" (2/3) ... [2018-12-09 00:31:28,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e179207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:31:28, skipping insertion in model container [2018-12-09 00:31:28,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:28" (3/3) ... [2018-12-09 00:31:28,379 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:28,384 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:31:28,388 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:31:28,396 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:31:28,413 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:31:28,414 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:31:28,414 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:31:28,414 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:31:28,414 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:31:28,414 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:31:28,414 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:31:28,414 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:31:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-09 00:31:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 00:31:28,427 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:28,428 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:28,429 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:28,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-12-09 00:31:28,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:31:28,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:31:28,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:28,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:31:28,461 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:31:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:28,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:28,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:31:28,511 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 00:31:28,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:31:28,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:31:28,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:31:28,523 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-09 00:31:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:28,537 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-09 00:31:28,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:31:28,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-09 00:31:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:28,543 INFO L225 Difference]: With dead ends: 78 [2018-12-09 00:31:28,543 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 00:31:28,545 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 [2018-12-09 00:31:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 00:31:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 00:31:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 00:31:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-09 00:31:28,567 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-09 00:31:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:28,567 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-09 00:31:28,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:31:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-09 00:31:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 00:31:28,568 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:28,568 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:28,568 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:28,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-12-09 00:31:28,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 00:31:28,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:31:28,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:28,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:31:28,570 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 00:31:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:31:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:31:28,628 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 00:31:28,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:31:28 BoogieIcfgContainer [2018-12-09 00:31:28,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:31:28,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:31:28,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:31:28,646 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:31:28,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:28" (3/4) ... [2018-12-09 00:31:28,648 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 00:31:28,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:31:28,649 INFO L168 Benchmark]: Toolchain (without parser) took 679.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 956.0 MB in the beginning and 1.0 GB in the end (delta: -72.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,650 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:31:28,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.10 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,651 INFO L168 Benchmark]: Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,651 INFO L168 Benchmark]: RCFGBuilder took 191.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,651 INFO L168 Benchmark]: TraceAbstraction took 270.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:28,652 INFO L168 Benchmark]: Witness Printer took 2.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:31:28,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.10 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 191.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=132, huge_ceil=1000000000000000000000000000000] [L76] float x = 0.0f; VAL [huge_ceil=1000000000000000000000000000000, x=0] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L77] RET, EXPR ceil_float(x) VAL [ceil_float(x)=131, huge_ceil=1000000000000000000000000000000, x=0] [L77] float res = ceil_float(x); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_ceil=1000000000000000000000000000000, res=131, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=131, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:31:29,950 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:31:29,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:31:29,957 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:31:29,957 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:31:29,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:31:29,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:31:29,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:31:29,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:31:29,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:31:29,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:31:29,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:31:29,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:31:29,961 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:31:29,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:31:29,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:31:29,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:31:29,963 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:31:29,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:31:29,965 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:31:29,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:31:29,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:31:29,967 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:31:29,967 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:31:29,967 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:31:29,968 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:31:29,968 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:31:29,969 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:31:29,969 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:31:29,970 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:31:29,970 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:31:29,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:31:29,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:31:29,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:31:29,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:31:29,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:31:29,971 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 00:31:29,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:31:29,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:31:29,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:31:29,979 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:31:29,979 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:31:29,979 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:31:29,980 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:31:29,980 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:31:29,980 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:31:29,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:31:29,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:31:29,981 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:31:29,981 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:31:29,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:31:29,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:31:29,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:31:29,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:31:29,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:31:29,983 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:31:29,983 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:31:29,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:31:29,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:31:29,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 00:31:29,984 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 00:31:29,984 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_d32930af-4bbe-4a59-b2be-093bbbea731b/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 -> 2e3b677629e69b083ff740542124e952dcae7545 [2018-12-09 00:31:30,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:31:30,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:31:30,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:31:30,018 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:31:30,018 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:31:30,019 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:30,054 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/5e08ac3a2/b2a1cee6e346452cb2ce56fb9010a16b/FLAG3c8c52ccb [2018-12-09 00:31:30,455 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:31:30,456 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:30,459 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/5e08ac3a2/b2a1cee6e346452cb2ce56fb9010a16b/FLAG3c8c52ccb [2018-12-09 00:31:30,468 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/data/5e08ac3a2/b2a1cee6e346452cb2ce56fb9010a16b [2018-12-09 00:31:30,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:31:30,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:31:30,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:31:30,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:31:30,473 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:31:30,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,475 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 09.12 12:31:30, skipping insertion in model container [2018-12-09 00:31:30,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:31:30,490 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:31:30,590 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:31:30,593 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:31:30,611 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:31:30,626 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:31:30,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30 WrapperNode [2018-12-09 00:31:30,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:31:30,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:31:30,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:31:30,627 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:31:30,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:31:30,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:31:30,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:31:30,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:31:30,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... [2018-12-09 00:31:30,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:31:30,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:31:30,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:31:30,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:31:30,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:31:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:31:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:31:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:31:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:31:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-12-09 00:31:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-12-09 00:31:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-09 00:31:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 00:31:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 00:31:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 00:31:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:31:30,990 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:31:31,138 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:31:31,144 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:31:31,144 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 00:31:31,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:31 BoogieIcfgContainer [2018-12-09 00:31:31,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:31:31,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:31:31,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:31:31,146 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:31:31,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:31:30" (1/3) ... [2018-12-09 00:31:31,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca9f7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:31:31, skipping insertion in model container [2018-12-09 00:31:31,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:31:30" (2/3) ... [2018-12-09 00:31:31,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca9f7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:31:31, skipping insertion in model container [2018-12-09 00:31:31,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:31" (3/3) ... [2018-12-09 00:31:31,148 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-12-09 00:31:31,154 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:31:31,158 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:31:31,167 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:31:31,183 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:31:31,183 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:31:31,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:31:31,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:31:31,184 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:31:31,184 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:31:31,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:31:31,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:31:31,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:31:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-09 00:31:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 00:31:31,196 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:31,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:31,198 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:31,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-12-09 00:31:31,203 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:31,204 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 00:31:31,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:31,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:31,271 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:31,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:31,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:31:31,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:31:31,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:31:31,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:31:31,290 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-09 00:31:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:31,303 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-09 00:31:31,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:31:31,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-09 00:31:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:31,309 INFO L225 Difference]: With dead ends: 78 [2018-12-09 00:31:31,309 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 00:31:31,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:31:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 00:31:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 00:31:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 00:31:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-09 00:31:31,333 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-09 00:31:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:31,333 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-09 00:31:31,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:31:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-09 00:31:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 00:31:31,334 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:31,334 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:31,335 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:31,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-12-09 00:31:31,335 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:31,335 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:31,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:31,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:31,481 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:31,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:31,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:31:31,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:31:31,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:31:31,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:31:31,494 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-12-09 00:31:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:32,224 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-12-09 00:31:32,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 00:31:32,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-09 00:31:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:32,227 INFO L225 Difference]: With dead ends: 60 [2018-12-09 00:31:32,227 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 00:31:32,227 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:31:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 00:31:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-09 00:31:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 00:31:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-12-09 00:31:32,232 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-12-09 00:31:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:32,232 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-12-09 00:31:32,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:31:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-09 00:31:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 00:31:32,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:32,233 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] [2018-12-09 00:31:32,233 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:32,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash 664765980, now seen corresponding path program 1 times [2018-12-09 00:31:32,233 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:32,234 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:32,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:32,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:32,326 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:32,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:32,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:31:32,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:31:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:31:32,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:31:32,334 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-12-09 00:31:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:33,053 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-12-09 00:31:33,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 00:31:33,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-09 00:31:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:33,055 INFO L225 Difference]: With dead ends: 67 [2018-12-09 00:31:33,055 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 00:31:33,055 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-09 00:31:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 00:31:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-09 00:31:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 00:31:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-09 00:31:33,058 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-12-09 00:31:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:33,058 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-09 00:31:33,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:31:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-09 00:31:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:31:33,059 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:33,059 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] [2018-12-09 00:31:33,059 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:33,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:33,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1845640621, now seen corresponding path program 1 times [2018-12-09 00:31:33,060 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:33,060 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:33,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:33,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:34,030 WARN L180 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 00:31:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:34,035 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:34,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:34,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 00:31:34,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 00:31:34,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 00:31:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-09 00:31:34,047 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-12-09 00:31:34,924 WARN L180 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 00:31:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:35,192 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-12-09 00:31:35,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 00:31:35,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-09 00:31:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:35,196 INFO L225 Difference]: With dead ends: 52 [2018-12-09 00:31:35,196 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 00:31:35,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:31:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 00:31:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 00:31:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 00:31:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-09 00:31:35,199 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-12-09 00:31:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:35,200 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-09 00:31:35,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 00:31:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-09 00:31:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 00:31:35,200 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:35,200 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:35,200 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:35,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:35,201 INFO L82 PathProgramCache]: Analyzing trace with hash -530743544, now seen corresponding path program 1 times [2018-12-09 00:31:35,201 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:35,201 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:35,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:35,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:35,285 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:35,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:35,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 00:31:35,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 00:31:35,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 00:31:35,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 00:31:35,293 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2018-12-09 00:31:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:35,513 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-12-09 00:31:35,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 00:31:35,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-09 00:31:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:35,515 INFO L225 Difference]: With dead ends: 57 [2018-12-09 00:31:35,515 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 00:31:35,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:31:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 00:31:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-09 00:31:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 00:31:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-09 00:31:35,518 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-12-09 00:31:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:35,519 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-09 00:31:35,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 00:31:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-09 00:31:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 00:31:35,519 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:35,519 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] [2018-12-09 00:31:35,519 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:35,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash 943724535, now seen corresponding path program 1 times [2018-12-09 00:31:35,520 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:35,520 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:35,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:35,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:35,628 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:35,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:35,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:31:35,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:31:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:31:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:31:35,636 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 7 states. [2018-12-09 00:31:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:35,969 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-12-09 00:31:35,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:31:35,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-12-09 00:31:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:35,970 INFO L225 Difference]: With dead ends: 52 [2018-12-09 00:31:35,971 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 00:31:35,971 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:31:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 00:31:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 00:31:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 00:31:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-12-09 00:31:35,974 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-12-09 00:31:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:35,974 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-12-09 00:31:35,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:31:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-12-09 00:31:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 00:31:35,975 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:35,975 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] [2018-12-09 00:31:35,975 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:35,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash 550697525, now seen corresponding path program 1 times [2018-12-09 00:31:35,975 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:35,975 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:35,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:36,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:36,086 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:36,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:36,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:31:36,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:31:36,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:31:36,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:31:36,094 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2018-12-09 00:31:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:36,306 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2018-12-09 00:31:36,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:31:36,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-09 00:31:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:36,307 INFO L225 Difference]: With dead ends: 37 [2018-12-09 00:31:36,307 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 00:31:36,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:31:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 00:31:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 00:31:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 00:31:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2018-12-09 00:31:36,310 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 25 [2018-12-09 00:31:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:36,310 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2018-12-09 00:31:36,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:31:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2018-12-09 00:31:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 00:31:36,310 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:31:36,311 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:31:36,311 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:31:36,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:31:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1832884299, now seen corresponding path program 1 times [2018-12-09 00:31:36,311 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:31:36,311 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/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 [2018-12-09 00:31:36,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:31:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:31:36,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:31:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:31:36,520 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:31:36,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:31:36,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 00:31:36,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 00:31:36,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 00:31:36,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 00:31:36,528 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand 13 states. [2018-12-09 00:31:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:31:37,076 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2018-12-09 00:31:37,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 00:31:37,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-12-09 00:31:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:31:37,077 INFO L225 Difference]: With dead ends: 34 [2018-12-09 00:31:37,077 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 00:31:37,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-12-09 00:31:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 00:31:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 00:31:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 00:31:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 00:31:37,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-12-09 00:31:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:31:37,078 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 00:31:37,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 00:31:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 00:31:37,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 00:31:37,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 00:31:37,203 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 00:31:37,203 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 00:31:37,203 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 00:31:37,203 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0) [2018-12-09 00:31:37,204 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 86) the Hoare annotation is: true [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 86) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L444 ceAbstractionStarter]: At program point L80-1(line 80) the Hoare annotation is: (or (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (= (_ +zero 8 24) main_~res~0)) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point L80-2(line 80) no Hoare annotation was computed. [2018-12-09 00:31:37,204 INFO L444 ceAbstractionStarter]: At program point L77(line 77) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0)) (= (_ +zero 8 24) main_~x~0)) [2018-12-09 00:31:37,204 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 86) no Hoare annotation was computed. [2018-12-09 00:31:37,211 INFO L448 ceAbstractionStarter]: For program point L77-1(line 77) no Hoare annotation was computed. [2018-12-09 00:31:37,211 INFO L448 ceAbstractionStarter]: For program point L80-4(lines 80 83) no Hoare annotation was computed. [2018-12-09 00:31:37,211 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-12-09 00:31:37,211 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-12-09 00:31:37,211 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-12-09 00:31:37,212 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-12-09 00:31:37,212 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-12-09 00:31:37,212 INFO L451 ceAbstractionStarter]: At program point ceil_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-12-09 00:31:37,212 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-09 00:31:37,212 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point ceil_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (= |ceil_float_#in~x| ceil_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point ceil_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0)) (= |__signbit_float_#in~x| __signbit_float_~x)) [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-12-09 00:31:37,213 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-12-09 00:31:37,213 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-12-09 00:31:37,218 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,218 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,220 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,221 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,221 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,221 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,221 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,221 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:31:37 BoogieIcfgContainer [2018-12-09 00:31:37,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:31:37,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:31:37,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:31:37,223 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:31:37,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:31:31" (3/4) ... [2018-12-09 00:31:37,225 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 00:31:37,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 00:31:37,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 00:31:37,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_float [2018-12-09 00:31:37,230 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-09 00:31:37,232 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-09 00:31:37,232 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 00:31:37,232 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 00:31:37,247 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) [2018-12-09 00:31:37,248 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x [2018-12-09 00:31:37,260 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d32930af-4bbe-4a59-b2be-093bbbea731b/bin-2019/utaipan/witness.graphml [2018-12-09 00:31:37,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:31:37,260 INFO L168 Benchmark]: Toolchain (without parser) took 6790.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -242.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:31:37,261 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:31:37,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.61 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:37,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.42 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:37,262 INFO L168 Benchmark]: Boogie Preprocessor took 21.47 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:31:37,262 INFO L168 Benchmark]: RCFGBuilder took 480.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -165.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:37,262 INFO L168 Benchmark]: TraceAbstraction took 6078.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.0 MB). Peak memory consumption was 311.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:37,262 INFO L168 Benchmark]: Witness Printer took 37.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2018-12-09 00:31:37,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.61 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.42 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.47 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 480.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -165.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6078.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.0 MB). Peak memory consumption was 311.8 MB. Max. memory is 11.5 GB. * Witness Printer took 37.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: 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: 59]: Loop Invariant [2018-12-09 00:31:37,265 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x - InvariantResult [Line: 16]: Loop Invariant [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 00:31:37,266 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 244 SDtfs, 279 SDslu, 775 SDs, 0 SdLazy, 444 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 22 PreInvPairs, 25 NumberOfFragments, 65 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 179 ConstructedInterpolants, 26 QuantifiedInterpolants, 26926 SizeOfPredicates, 32 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...