./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c -s /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01f5d92913440f76bf2a724738adcdb83e463632 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c -s /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01f5d92913440f76bf2a724738adcdb83e463632 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:26:39,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:26:39,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:26:39,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:26:39,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:26:39,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:26:39,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:26:39,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:26:39,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:26:39,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:26:39,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:26:39,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:26:39,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:26:39,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:26:39,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:26:39,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:26:39,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:26:39,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:26:39,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:26:39,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:26:39,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:26:39,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:26:39,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:26:39,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:26:39,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:26:39,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:26:39,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:26:39,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:26:39,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:26:39,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:26:39,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:26:39,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:26:39,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:26:39,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:26:39,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:26:39,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:26:39,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:26:39,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:26:39,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:26:39,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:26:39,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:26:39,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:26:39,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:26:39,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:26:39,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:26:39,942 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:26:39,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:26:39,942 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:26:39,943 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:26:39,943 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:26:39,943 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:26:39,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:26:39,944 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:26:39,944 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:26:39,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:26:39,945 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:26:39,945 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:26:39,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:26:39,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:26:39,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:26:39,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:26:39,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:26:39,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:26:39,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:26:39,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:26:39,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:26:39,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:26:39,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:26:39,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:26:39,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:26:39,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:26:39,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:26:39,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:26:39,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:26:39,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:26:39,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:26:39,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:26:39,958 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:26:39,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:26:39,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:26:39,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:26:39,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:26:39,959 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01f5d92913440f76bf2a724738adcdb83e463632 [2020-11-28 07:26:40,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:26:40,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:26:40,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:26:40,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:26:40,282 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:26:40,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2020-11-28 07:26:40,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/ff7202f72/5811bbb66da347178a966034cf111fad/FLAG0e3a60db6 [2020-11-28 07:26:40,840 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:26:40,840 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2020-11-28 07:26:40,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/ff7202f72/5811bbb66da347178a966034cf111fad/FLAG0e3a60db6 [2020-11-28 07:26:41,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/ff7202f72/5811bbb66da347178a966034cf111fad [2020-11-28 07:26:41,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:26:41,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:26:41,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:41,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:26:41,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:26:41,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b069075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41, skipping insertion in model container [2020-11-28 07:26:41,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:26:41,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:26:41,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:41,460 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:26:41,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:41,527 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:26:41,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41 WrapperNode [2020-11-28 07:26:41,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:41,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:41,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:26:41,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:26:41,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:41,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:26:41,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:26:41,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:26:41,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... [2020-11-28 07:26:41,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:26:41,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:26:41,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:26:41,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:26:41,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/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 [2020-11-28 07:26:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:26:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:26:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:26:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:26:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:26:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:26:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:26:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:26:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 07:26:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:26:42,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:26:42,409 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:26:42,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:42 BoogieIcfgContainer [2020-11-28 07:26:42,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:26:42,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:26:42,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:26:42,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:26:42,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:26:41" (1/3) ... [2020-11-28 07:26:42,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf00f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:42, skipping insertion in model container [2020-11-28 07:26:42,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:41" (2/3) ... [2020-11-28 07:26:42,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf00f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:42, skipping insertion in model container [2020-11-28 07:26:42,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:42" (3/3) ... [2020-11-28 07:26:42,424 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610.c [2020-11-28 07:26:42,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:26:42,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:26:42,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:26:42,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:26:42,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:26:42,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:26:42,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:26:42,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:26:42,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:26:42,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:26:42,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:26:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 07:26:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:26:42,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:42,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:42,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2146688080, now seen corresponding path program 1 times [2020-11-28 07:26:42,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:42,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642417700] [2020-11-28 07:26:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642417700] [2020-11-28 07:26:42,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:42,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:26:42,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711862473] [2020-11-28 07:26:42,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:26:42,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:26:42,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:26:42,688 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 07:26:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:42,705 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2020-11-28 07:26:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:26:42,706 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:26:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:42,714 INFO L225 Difference]: With dead ends: 41 [2020-11-28 07:26:42,715 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:26:42,717 INFO L677 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 [2020-11-28 07:26:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:26:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 07:26:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 07:26:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-28 07:26:42,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2020-11-28 07:26:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:42,750 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-28 07:26:42,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:26:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-11-28 07:26:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:26:42,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:42,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:42,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:26:42,751 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash -46519351, now seen corresponding path program 1 times [2020-11-28 07:26:42,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:42,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194786599] [2020-11-28 07:26:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:42,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:42,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:42,973 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:26:42,974 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:26:42,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:26:43,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:26:43 BoogieIcfgContainer [2020-11-28 07:26:43,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:26:43,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:26:43,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:26:43,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:26:43,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:42" (3/4) ... [2020-11-28 07:26:43,038 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:26:43,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:26:43,045 INFO L168 Benchmark]: Toolchain (without parser) took 1836.67 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 76.8 MB in the beginning and 66.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,046 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:43,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.58 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.9 MB in the end (delta: 602.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.63 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,050 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,051 INFO L168 Benchmark]: RCFGBuilder took 786.68 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 72.0 MB in the beginning and 95.7 MB in the end (delta: -23.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,052 INFO L168 Benchmark]: TraceAbstraction took 619.39 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 66.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:43,053 INFO L168 Benchmark]: Witness Printer took 6.26 ms. Allocated memory is still 121.6 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:43,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.58 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.9 MB in the end (delta: 602.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.63 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 786.68 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 72.0 MB in the beginning and 95.7 MB in the end (delta: -23.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 619.39 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 66.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.26 ms. Allocated memory is still 121.6 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L129] float x = 0.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [aT_atan={11:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [aT_atan={11:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L68] COND TRUE ix >= 0x50800000 [L69] COND TRUE ((ix) > 0x7f800000L) [L70] return x + x; VAL [aT_atan={11:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L130] float res = atan_float(x); [L17] return x != x; [L133] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0610.c", 3, "reach_error") VAL [aT_atan={11:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 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=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.2.0-a4ecdab [2020-11-28 07:26:45,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:26:45,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:26:45,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:26:45,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:26:45,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:26:45,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:26:45,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:26:45,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:26:45,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:26:45,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:26:45,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:26:45,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:26:45,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:26:45,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:26:45,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:26:45,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:26:45,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:26:45,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:26:45,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:26:45,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:26:45,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:26:45,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:26:45,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:26:45,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:26:45,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:26:45,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:26:45,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:26:45,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:26:45,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:26:45,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:26:45,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:26:45,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:26:45,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:26:45,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:26:45,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:26:45,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:26:45,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:26:45,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:26:45,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:26:45,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:26:45,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:26:45,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:26:45,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:26:45,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:26:45,625 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:26:45,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:26:45,626 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:26:45,626 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:26:45,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:26:45,627 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:26:45,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:26:45,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:26:45,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:26:45,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:26:45,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:26:45,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:26:45,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:26:45,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:26:45,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:26:45,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:26:45,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:26:45,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:26:45,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:26:45,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:26:45,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:26:45,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:26:45,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:26:45,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:26:45,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:26:45,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:26:45,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:26:45,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:26:45,634 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:26:45,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:26:45,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:26:45,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:26:45,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:26:45,635 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01f5d92913440f76bf2a724738adcdb83e463632 [2020-11-28 07:26:46,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:26:46,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:26:46,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:26:46,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:26:46,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:26:46,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2020-11-28 07:26:46,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/a04f5bdd5/6c846a2e534f4e858853829fa87e6566/FLAG714945ec3 [2020-11-28 07:26:46,784 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:26:46,784 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2020-11-28 07:26:46,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/a04f5bdd5/6c846a2e534f4e858853829fa87e6566/FLAG714945ec3 [2020-11-28 07:26:47,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/data/a04f5bdd5/6c846a2e534f4e858853829fa87e6566 [2020-11-28 07:26:47,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:26:47,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:26:47,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:47,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:26:47,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:26:47,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca710a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47, skipping insertion in model container [2020-11-28 07:26:47,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:26:47,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:26:47,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:47,535 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:26:47,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:47,646 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:26:47,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47 WrapperNode [2020-11-28 07:26:47,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:47,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:47,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:26:47,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:26:47,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:47,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:26:47,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:26:47,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:26:47,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... [2020-11-28 07:26:47,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:26:47,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:26:47,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:26:47,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:26:47,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/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 [2020-11-28 07:26:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-28 07:26:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:26:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:26:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:26:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:26:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:26:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:26:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:26:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:26:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:26:54,967 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:26:54,967 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:26:54,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:54 BoogieIcfgContainer [2020-11-28 07:26:54,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:26:54,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:26:54,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:26:54,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:26:54,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:26:47" (1/3) ... [2020-11-28 07:26:54,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561eae89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:54, skipping insertion in model container [2020-11-28 07:26:54,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:47" (2/3) ... [2020-11-28 07:26:54,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561eae89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:54, skipping insertion in model container [2020-11-28 07:26:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:54" (3/3) ... [2020-11-28 07:26:54,979 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610.c [2020-11-28 07:26:54,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:26:54,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:26:55,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:26:55,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:26:55,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:26:55,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:26:55,043 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:26:55,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:26:55,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:26:55,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:26:55,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:26:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-28 07:26:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:26:55,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:55,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:55,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:55,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1030411275, now seen corresponding path program 1 times [2020-11-28 07:26:55,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:26:55,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100107811] [2020-11-28 07:26:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/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 [2020-11-28 07:26:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:55,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:26:55,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:26:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:55,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:26:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:55,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100107811] [2020-11-28 07:26:55,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:55,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:26:55,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729198021] [2020-11-28 07:26:55,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:26:55,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:26:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:26:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:26:56,006 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-11-28 07:26:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:56,024 INFO L93 Difference]: Finished difference Result 65 states and 99 transitions. [2020-11-28 07:26:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:26:56,025 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:26:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:56,034 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:26:56,034 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 07:26:56,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:26:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 07:26:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 07:26:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:26:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-11-28 07:26:56,069 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 10 [2020-11-28 07:26:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:56,069 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-11-28 07:26:56,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:26:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-11-28 07:26:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:26:56,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:56,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:56,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:26:56,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1304895922, now seen corresponding path program 1 times [2020-11-28 07:26:56,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:26:56,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936420543] [2020-11-28 07:26:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/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 [2020-11-28 07:26:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:57,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:26:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:26:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:57,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:26:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:57,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936420543] [2020-11-28 07:26:57,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:57,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:26:57,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670624432] [2020-11-28 07:26:57,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:26:57,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:26:57,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:26:57,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:57,831 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 10 states. [2020-11-28 07:27:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:19,690 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-11-28 07:27:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:19,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-28 07:27:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:19,749 INFO L225 Difference]: With dead ends: 44 [2020-11-28 07:27:19,749 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 07:27:19,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:27:19,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 07:27:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-11-28 07:27:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:27:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-11-28 07:27:19,756 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2020-11-28 07:27:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:19,756 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-11-28 07:27:19,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:27:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-11-28 07:27:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:27:19,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:19,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:19,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:27:19,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1812830160, now seen corresponding path program 1 times [2020-11-28 07:27:19,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:19,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470798682] [2020-11-28 07:27:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/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 [2020-11-28 07:27:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:20,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:27:20,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:21,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:21,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470798682] [2020-11-28 07:27:21,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:21,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2020-11-28 07:27:21,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801125182] [2020-11-28 07:27:21,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:27:21,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:27:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:27:21,313 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 9 states. [2020-11-28 07:27:21,591 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-11-28 07:27:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:21,614 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-11-28 07:27:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:27:21,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-28 07:27:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:21,615 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:27:21,615 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:27:21,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:27:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:27:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:27:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:27:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:27:21,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-28 07:27:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:21,617 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:27:21,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:27:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:27:21,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:27:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:27:21,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:27:21,974 INFO L274 CegarLoopResult]: For program point L93(lines 93 99) no Hoare annotation was computed. [2020-11-28 07:27:21,974 INFO L274 CegarLoopResult]: For program point L93-2(lines 76 101) no Hoare annotation was computed. [2020-11-28 07:27:21,974 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-11-28 07:27:21,974 INFO L274 CegarLoopResult]: For program point L85(lines 85 91) no Hoare annotation was computed. [2020-11-28 07:27:21,975 INFO L274 CegarLoopResult]: For program point L118-2(line 118) no Hoare annotation was computed. [2020-11-28 07:27:21,975 INFO L270 CegarLoopResult]: At program point L118-3(lines 58 120) the Hoare annotation is: (and (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_atan_float_#res|) (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_atan_float_~x)) [2020-11-28 07:27:21,975 INFO L274 CegarLoopResult]: For program point L77(lines 77 80) no Hoare annotation was computed. [2020-11-28 07:27:21,975 INFO L274 CegarLoopResult]: For program point L77-2(lines 77 80) no Hoare annotation was computed. [2020-11-28 07:27:21,975 INFO L274 CegarLoopResult]: For program point L69(lines 69 70) no Hoare annotation was computed. [2020-11-28 07:27:21,975 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point L62-1(lines 62 66) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L270 CegarLoopResult]: At program point L62-2(lines 62 66) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_atan_float_~x)) [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point L62-3(lines 62 66) no Hoare annotation was computed. [2020-11-28 07:27:21,976 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:27:21,977 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: false [2020-11-28 07:27:21,977 INFO L274 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2020-11-28 07:27:21,977 INFO L277 CegarLoopResult]: At program point L138(lines 122 139) the Hoare annotation is: true [2020-11-28 07:27:21,977 INFO L270 CegarLoopResult]: At program point L31(lines 19 32) the Hoare annotation is: false [2020-11-28 07:27:21,977 INFO L274 CegarLoopResult]: For program point L114(lines 114 119) no Hoare annotation was computed. [2020-11-28 07:27:21,977 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:27:21,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_atan_float_#res|) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_atan_float_~x)) [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L133(lines 133 136) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L26(lines 26 30) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L26-1(lines 19 32) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L84(lines 84 100) no Hoare annotation was computed. [2020-11-28 07:27:21,978 INFO L274 CegarLoopResult]: For program point L76(lines 76 101) no Hoare annotation was computed. [2020-11-28 07:27:21,979 INFO L274 CegarLoopResult]: For program point L68(lines 68 75) no Hoare annotation was computed. [2020-11-28 07:27:21,995 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:21,996 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:21,996 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:21,997 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:21,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:21,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,002 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,002 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,002 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,003 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,004 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,004 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,005 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,005 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,005 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,005 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,006 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,007 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,007 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,007 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,008 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,008 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,008 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,009 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:22 BoogieIcfgContainer [2020-11-28 07:27:22,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:22,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:22,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:22,013 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:22,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:54" (3/4) ... [2020-11-28 07:27:22,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:27:22,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:27:22,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:27:22,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:27:22,039 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:27:22,071 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x [2020-11-28 07:27:22,072 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x [2020-11-28 07:27:22,136 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_943220d8-a037-434d-8f8b-514fc3c3461a/bin/utaipan/witness.graphml [2020-11-28 07:27:22,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:22,138 INFO L168 Benchmark]: Toolchain (without parser) took 34988.17 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 34.9 MB in the beginning and 39.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,138 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:22,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.76 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 35.4 MB in the end (delta: -683.6 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 33.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,141 INFO L168 Benchmark]: Boogie Preprocessor took 56.44 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 30.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,141 INFO L168 Benchmark]: RCFGBuilder took 7180.26 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 30.9 MB in the beginning and 40.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,142 INFO L168 Benchmark]: TraceAbstraction took 27040.20 ms. Allocated memory is still 79.7 MB. Free memory was 40.5 MB in the beginning and 45.1 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:22,142 INFO L168 Benchmark]: Witness Printer took 124.00 ms. Allocated memory is still 79.7 MB. Free memory was 45.1 MB in the beginning and 39.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:22,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.76 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 35.4 MB in the end (delta: -683.6 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 33.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.44 ms. Allocated memory is still 56.6 MB. Free memory was 33.1 MB in the beginning and 30.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7180.26 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 30.9 MB in the beginning and 40.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27040.20 ms. Allocated memory is still 79.7 MB. Free memory was 40.5 MB in the beginning and 45.1 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 124.00 ms. Allocated memory is still 79.7 MB. Free memory was 45.1 MB in the beginning and 39.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 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 - 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 - 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant [2020-11-28 07:27:22,157 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,157 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,158 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,158 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,158 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,158 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,165 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,165 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,165 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,166 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 62]: Loop Invariant [2020-11-28 07:27:22,167 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,167 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,168 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,168 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 58]: Loop Invariant [2020-11-28 07:27:22,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,169 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,170 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,170 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,170 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,171 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,171 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,171 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,171 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 07:27:22,171 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 07:27:22,172 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 94 SDslu, 120 SDs, 0 SdLazy, 80 SolverSat, 3 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 21.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 60 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 6 QuantifiedInterpolants, 3403 SizeOfPredicates, 17 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...