./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_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:13,860 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:40:13,861 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:40:13,867 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:40:13,867 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:40:13,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:40:13,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:40:13,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:40:13,870 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:40:13,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:40:13,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:40:13,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:40:13,871 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:40:13,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:40:13,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:40:13,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:40:13,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:40:13,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:40:13,875 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:40:13,876 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:40:13,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:40:13,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:40:13,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:40:13,878 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:40:13,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:40:13,879 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:40:13,879 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:40:13,880 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:40:13,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:40:13,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:40:13,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:40:13,881 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:40:13,881 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:40:13,881 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:40:13,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:40:13,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:40:13,882 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-01 22:40:13,889 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:40:13,889 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:40:13,890 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:40:13,890 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 22:40:13,890 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:40:13,891 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:40:13,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:40:13,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:40:13,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:40:13,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:40:13,893 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 22:40:13,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:40:13,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:40:13,893 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 22:40:13,893 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_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:13,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:40:13,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:40:13,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:40:13,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:40:13,920 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:40:13,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:13,956 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/6f5b4ca99/173936c9de8b45e1a3c2a3580944fd67/FLAG18ac84263 [2018-12-01 22:40:14,299 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:40:14,300 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:14,304 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/6f5b4ca99/173936c9de8b45e1a3c2a3580944fd67/FLAG18ac84263 [2018-12-01 22:40:14,696 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/6f5b4ca99/173936c9de8b45e1a3c2a3580944fd67 [2018-12-01 22:40:14,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:40:14,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:40:14,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:40:14,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:40:14,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:40:14,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3757d378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14, skipping insertion in model container [2018-12-01 22:40:14,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:40:14,723 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:40:14,822 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:40:14,824 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:40:14,840 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:40:14,852 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:40:14,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14 WrapperNode [2018-12-01 22:40:14,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:40:14,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:40:14,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:40:14,853 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:40:14,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:40:14,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:40:14,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:40:14,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:40:14,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... [2018-12-01 22:40:14,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:40:14,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:40:14,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:40:14,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:40:14,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:40:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:40:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:40:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:40:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-12-01 22:40:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-12-01 22:40:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 22:40:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 22:40:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:40:15,094 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:40:15,094 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 22:40:15,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:15 BoogieIcfgContainer [2018-12-01 22:40:15,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:40:15,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:40:15,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:40:15,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:40:15,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:40:14" (1/3) ... [2018-12-01 22:40:15,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13552734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:40:15, skipping insertion in model container [2018-12-01 22:40:15,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:14" (2/3) ... [2018-12-01 22:40:15,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13552734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:40:15, skipping insertion in model container [2018-12-01 22:40:15,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:15" (3/3) ... [2018-12-01 22:40:15,099 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:15,104 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:40:15,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:40:15,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:40:15,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:40:15,136 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:40:15,137 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:40:15,137 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:40:15,137 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:40:15,137 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:40:15,137 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:40:15,137 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:40:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-01 22:40:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:40:15,150 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:15,150 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:40:15,151 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:15,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-12-01 22:40:15,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:40:15,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:40:15,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:15,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:40:15,183 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:40:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:15,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:15,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:40:15,230 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:40:15,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:40:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:40:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:40:15,242 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-01 22:40:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:15,255 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-01 22:40:15,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:40:15,256 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-01 22:40:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:15,261 INFO L225 Difference]: With dead ends: 78 [2018-12-01 22:40:15,261 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:40:15,263 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 [2018-12-01 22:40:15,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:40:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-01 22:40:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-01 22:40:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-01 22:40:15,284 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-01 22:40:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:15,285 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-01 22:40:15,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:40:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-01 22:40:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 22:40:15,285 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:15,285 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:40:15,286 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:15,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:15,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-12-01 22:40:15,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:40:15,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:40:15,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:15,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:40:15,287 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:40:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:40:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:40:15,340 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 22:40:15,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:40:15 BoogieIcfgContainer [2018-12-01 22:40:15,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:40:15,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:40:15,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:40:15,357 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:40:15,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:15" (3/4) ... [2018-12-01 22:40:15,359 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 22:40:15,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:40:15,360 INFO L168 Benchmark]: Toolchain (without parser) took 660.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,361 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:40:15,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.13 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,362 INFO L168 Benchmark]: Boogie Preprocessor took 19.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,362 INFO L168 Benchmark]: RCFGBuilder took 179.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,362 INFO L168 Benchmark]: TraceAbstraction took 261.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:15,363 INFO L168 Benchmark]: Witness Printer took 2.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:40:15,364 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 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 152.13 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 179.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 261.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 [2018-12-01 22:40:16,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:40:16,617 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:40:16,623 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:40:16,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:40:16,623 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:40:16,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:40:16,625 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:40:16,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:40:16,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:40:16,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:40:16,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:40:16,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:40:16,627 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:40:16,628 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:40:16,628 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:40:16,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:40:16,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:40:16,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:40:16,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:40:16,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:40:16,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:40:16,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:40:16,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:40:16,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:40:16,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:40:16,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:40:16,635 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:40:16,636 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:40:16,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:40:16,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:40:16,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:40:16,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:40:16,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:40:16,637 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:40:16,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:40:16,638 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-01 22:40:16,647 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:40:16,647 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:40:16,648 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:40:16,648 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:40:16,648 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:40:16,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:40:16,649 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:40:16,649 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:40:16,649 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:40:16,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:40:16,650 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:40:16,650 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:40:16,651 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:40:16,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:40:16,652 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:40:16,652 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-01 22:40:16,653 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:40:16,653 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 22:40:16,653 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 22:40:16,653 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_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:16,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:40:16,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:40:16,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:40:16,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:40:16,686 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:40:16,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:16,721 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/a6fa15f4d/d925ceb6fa344198975bf16a2d1a15df/FLAGf2a1918e2 [2018-12-01 22:40:17,131 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:40:17,131 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/sv-benchmarks/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:17,135 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/a6fa15f4d/d925ceb6fa344198975bf16a2d1a15df/FLAGf2a1918e2 [2018-12-01 22:40:17,143 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/data/a6fa15f4d/d925ceb6fa344198975bf16a2d1a15df [2018-12-01 22:40:17,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:40:17,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:40:17,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:40:17,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:40:17,148 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:40:17,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,150 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 01.12 10:40:17, skipping insertion in model container [2018-12-01 22:40:17,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:40:17,164 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:40:17,259 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:40:17,262 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:40:17,278 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:40:17,292 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:40:17,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17 WrapperNode [2018-12-01 22:40:17,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:40:17,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:40:17,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:40:17,293 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:40:17,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:40:17,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:40:17,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:40:17,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:40:17,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... [2018-12-01 22:40:17,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:40:17,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:40:17,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:40:17,330 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:40:17,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:40:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:40:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:40:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-12-01 22:40:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-01 22:40:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 22:40:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 22:40:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 22:40:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:40:17,633 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:40:17,770 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:40:17,775 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:40:17,775 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 22:40:17,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:17 BoogieIcfgContainer [2018-12-01 22:40:17,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:40:17,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:40:17,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:40:17,778 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:40:17,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:40:17" (1/3) ... [2018-12-01 22:40:17,779 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 01.12 10:40:17, skipping insertion in model container [2018-12-01 22:40:17,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:40:17" (2/3) ... [2018-12-01 22:40:17,779 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 01.12 10:40:17, skipping insertion in model container [2018-12-01 22:40:17,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:17" (3/3) ... [2018-12-01 22:40:17,780 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-12-01 22:40:17,785 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:40:17,790 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:40:17,798 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:40:17,815 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:40:17,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:40:17,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:40:17,816 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:40:17,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:40:17,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:40:17,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:40:17,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:40:17,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:40:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-01 22:40:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:40:17,829 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:17,830 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:40:17,831 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:17,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-12-01 22:40:17,836 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:17,837 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:17,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:17,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:17,895 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:17,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:17,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:40:17,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:40:17,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:40:17,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:40:17,914 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-01 22:40:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:17,927 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-01 22:40:17,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:40:17,928 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-01 22:40:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:17,934 INFO L225 Difference]: With dead ends: 78 [2018-12-01 22:40:17,934 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:40:17,936 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 [2018-12-01 22:40:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:40:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-01 22:40:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-01 22:40:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-01 22:40:17,958 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-01 22:40:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:17,958 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-01 22:40:17,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:40:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-01 22:40:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 22:40:17,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:17,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:40:17,959 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:17,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-12-01 22:40:17,960 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:17,960 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:17,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:18,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:18,097 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:18,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:18,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 22:40:18,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:40:18,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:40:18,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-01 22:40:18,105 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-12-01 22:40:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:18,805 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-12-01 22:40:18,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:40:18,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-01 22:40:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:18,807 INFO L225 Difference]: With dead ends: 60 [2018-12-01 22:40:18,807 INFO L226 Difference]: Without dead ends: 44 [2018-12-01 22:40:18,808 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 [2018-12-01 22:40:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-01 22:40:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-01 22:40:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-01 22:40:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-12-01 22:40:18,811 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-12-01 22:40:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:18,812 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-12-01 22:40:18,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:40:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-01 22:40:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 22:40:18,812 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:18,812 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] [2018-12-01 22:40:18,812 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:18,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash 664765980, now seen corresponding path program 1 times [2018-12-01 22:40:18,813 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:18,813 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:18,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:18,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:18,913 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:18,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:18,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 22:40:18,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:40:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:40:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-01 22:40:18,920 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-12-01 22:40:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:19,674 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-12-01 22:40:19,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 22:40:19,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-01 22:40:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:19,676 INFO L225 Difference]: With dead ends: 67 [2018-12-01 22:40:19,676 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:40:19,676 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 [2018-12-01 22:40:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:40:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-01 22:40:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:40:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-01 22:40:19,679 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-12-01 22:40:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:19,679 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-01 22:40:19,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:40:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-01 22:40:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:40:19,680 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:19,680 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] [2018-12-01 22:40:19,680 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:19,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:19,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1845640621, now seen corresponding path program 1 times [2018-12-01 22:40:19,681 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:19,681 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:19,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:19,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:20,630 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-01 22:40:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:20,634 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:20,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:20,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 22:40:20,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 22:40:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 22:40:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-01 22:40:20,642 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-12-01 22:40:21,517 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-01 22:40:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:21,817 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-12-01 22:40:21,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 22:40:21,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-01 22:40:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:21,822 INFO L225 Difference]: With dead ends: 52 [2018-12-01 22:40:21,822 INFO L226 Difference]: Without dead ends: 34 [2018-12-01 22:40:21,822 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 [2018-12-01 22:40:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-01 22:40:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-01 22:40:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:40:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-01 22:40:21,825 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-12-01 22:40:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:21,826 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-01 22:40:21,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 22:40:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-01 22:40:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-01 22:40:21,826 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:21,826 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] [2018-12-01 22:40:21,826 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:21,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash -530743544, now seen corresponding path program 1 times [2018-12-01 22:40:21,827 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:21,827 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:21,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:21,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:21,911 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:21,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:21,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 22:40:21,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 22:40:21,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 22:40:21,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 22:40:21,920 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2018-12-01 22:40:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:22,137 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-12-01 22:40:22,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 22:40:22,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-01 22:40:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:22,138 INFO L225 Difference]: With dead ends: 57 [2018-12-01 22:40:22,138 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:40:22,138 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 [2018-12-01 22:40:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:40:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-01 22:40:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:40:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-01 22:40:22,142 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-12-01 22:40:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:22,142 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-01 22:40:22,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 22:40:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-01 22:40:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 22:40:22,143 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:22,143 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] [2018-12-01 22:40:22,143 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:22,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash 943724535, now seen corresponding path program 1 times [2018-12-01 22:40:22,143 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:22,143 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:22,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:22,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:22,252 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:22,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:22,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 22:40:22,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:40:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:40:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-01 22:40:22,260 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 7 states. [2018-12-01 22:40:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:22,603 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-12-01 22:40:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 22:40:22,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-12-01 22:40:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:22,604 INFO L225 Difference]: With dead ends: 52 [2018-12-01 22:40:22,604 INFO L226 Difference]: Without dead ends: 34 [2018-12-01 22:40:22,604 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 [2018-12-01 22:40:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-01 22:40:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-01 22:40:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:40:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-12-01 22:40:22,607 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-12-01 22:40:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:22,608 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-12-01 22:40:22,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:40:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-12-01 22:40:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 22:40:22,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:22,608 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] [2018-12-01 22:40:22,608 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:22,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash 550697525, now seen corresponding path program 1 times [2018-12-01 22:40:22,609 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:22,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:22,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:22,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:22,720 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:22,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:22,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-01 22:40:22,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 22:40:22,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 22:40:22,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-01 22:40:22,728 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2018-12-01 22:40:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:22,954 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2018-12-01 22:40:22,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 22:40:22,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-01 22:40:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:22,956 INFO L225 Difference]: With dead ends: 37 [2018-12-01 22:40:22,956 INFO L226 Difference]: Without dead ends: 34 [2018-12-01 22:40:22,956 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 [2018-12-01 22:40:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-01 22:40:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-01 22:40:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:40:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2018-12-01 22:40:22,959 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 25 [2018-12-01 22:40:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:22,959 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2018-12-01 22:40:22,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 22:40:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2018-12-01 22:40:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 22:40:22,960 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:40:22,960 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] [2018-12-01 22:40:22,960 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:40:22,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:40:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1832884299, now seen corresponding path program 1 times [2018-12-01 22:40:22,961 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:40:22,961 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/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 [2018-12-01 22:40:22,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:40:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:40:23,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:40:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:40:23,193 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:40:23,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:40:23,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-01 22:40:23,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-01 22:40:23,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-01 22:40:23,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-01 22:40:23,202 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand 13 states. [2018-12-01 22:40:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:40:23,719 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2018-12-01 22:40:23,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 22:40:23,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-12-01 22:40:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:40:23,720 INFO L225 Difference]: With dead ends: 34 [2018-12-01 22:40:23,720 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 22:40:23,720 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 [2018-12-01 22:40:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 22:40:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 22:40:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 22:40:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 22:40:23,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-12-01 22:40:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:40:23,721 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:40:23,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-01 22:40:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 22:40:23,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 22:40:23,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 22:40:23,833 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:40:23,834 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) [2018-12-01 22:40:23,834 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 86) the Hoare annotation is: true [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 86) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-01 22:40:23,834 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))) [2018-12-01 22:40:23,834 INFO L448 ceAbstractionStarter]: For program point L80-2(line 80) no Hoare annotation was computed. [2018-12-01 22:40:23,834 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)) [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 86) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L77-1(line 77) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L80-4(lines 80 83) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L451 ceAbstractionStarter]: At program point ceil_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point ceil_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-01 22:40:23,835 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))) [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point ceil_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-01 22:40:23,835 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-12-01 22:40:23,836 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)) [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-12-01 22:40:23,836 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-12-01 22:40:23,836 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-12-01 22:40:23,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,841 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,843 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,844 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,844 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,844 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,845 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,845 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:40:23 BoogieIcfgContainer [2018-12-01 22:40:23,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:40:23,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:40:23,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:40:23,847 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:40:23,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:40:17" (3/4) ... [2018-12-01 22:40:23,849 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 22:40:23,853 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 22:40:23,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 22:40:23,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_float [2018-12-01 22:40:23,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-01 22:40:23,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-01 22:40:23,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-01 22:40:23,857 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 22:40:23,873 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) [2018-12-01 22:40:23,874 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 [2018-12-01 22:40:23,890 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1fe00857-8d1e-49ed-98ec-dad09389c302/bin-2019/utaipan/witness.graphml [2018-12-01 22:40:23,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:40:23,891 INFO L168 Benchmark]: Toolchain (without parser) took 6745.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -234.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:40:23,891 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-12-01 22:40:23,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.95 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:23,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.27 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:23,892 INFO L168 Benchmark]: Boogie Preprocessor took 20.96 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:40:23,892 INFO L168 Benchmark]: RCFGBuilder took 446.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:23,893 INFO L168 Benchmark]: TraceAbstraction took 6069.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:40:23,893 INFO L168 Benchmark]: Witness Printer took 43.63 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-01 22:40:23,895 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.95 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.27 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.96 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6069.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.63 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: 7.0 MB). Peak memory consumption was 7.0 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 [2018-12-01 22:40:23,898 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,898 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,898 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,898 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 [2018-12-01 22:40:23,898 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,898 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,899 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 22:40:23,899 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, 2.4s 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...