./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --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_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/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 debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................... 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_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/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 debea56186ef4ab268c0be4274b8e0822edc1b01 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:02:32,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:32,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:32,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:32,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:32,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:32,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:32,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:32,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:32,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:32,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:32,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:32,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:32,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:32,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:32,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:32,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:32,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:32,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:32,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:32,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:32,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:32,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:32,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:32,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:32,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:32,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:32,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:32,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:32,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:32,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:32,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:32,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:32,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:32,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:32,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:32,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:32,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:32,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:32,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:32,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:32,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:02:32,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:32,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:32,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:32,826 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:32,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:32,826 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:32,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:02:32,827 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:32,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:32,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:02:32,828 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:02:32,828 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:32,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:02:32,829 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:02:32,829 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:02:32,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:32,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:32,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:02:32,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:32,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:32,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:02:32,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:32,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:02:32,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:32,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:32,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:02:32,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:32,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:02:32,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:32,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:32,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:32,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:32,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:32,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:32,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:02:32,835 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:02:32,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:02:32,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:02:32,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:32,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:32,836 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_3e470185-50f7-4f68-81f4-e590703b720c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-11-22 13:02:33,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:33,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:33,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:33,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:33,179 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:33,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-22 13:02:33,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/45abc56c5/56dbbdfbf25f42299ac4b10e74b9ccb9/FLAG9c8650c4b [2020-11-22 13:02:33,743 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:33,747 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-22 13:02:33,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/45abc56c5/56dbbdfbf25f42299ac4b10e74b9ccb9/FLAG9c8650c4b [2020-11-22 13:02:34,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/45abc56c5/56dbbdfbf25f42299ac4b10e74b9ccb9 [2020-11-22 13:02:34,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:34,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:34,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:34,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:34,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:34,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37140724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34, skipping insertion in model container [2020-11-22 13:02:34,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:34,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:34,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:34,445 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:34,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:34,494 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:34,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34 WrapperNode [2020-11-22 13:02:34,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:34,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:34,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:34,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:34,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:34,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:34,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:34,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:34,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... [2020-11-22 13:02:34,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:34,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:34,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:34,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:34,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/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 [2020-11-22 13:02:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:02:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:02:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:02:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:02:34,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:02:34,946 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 13:02:34,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:34 BoogieIcfgContainer [2020-11-22 13:02:34,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:02:34,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:02:34,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:02:34,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:02:34,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:34" (1/3) ... [2020-11-22 13:02:34,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692b617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:34, skipping insertion in model container [2020-11-22 13:02:34,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:34" (2/3) ... [2020-11-22 13:02:34,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692b617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:34, skipping insertion in model container [2020-11-22 13:02:34,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:34" (3/3) ... [2020-11-22 13:02:34,976 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-11-22 13:02:34,987 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:02:34,991 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:02:35,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:02:35,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:02:35,056 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:02:35,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:02:35,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:02:35,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:02:35,057 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:02:35,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:02:35,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:02:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-11-22 13:02:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:02:35,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:35,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:02:35,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:02:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:35,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1643631, now seen corresponding path program 1 times [2020-11-22 13:02:35,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:35,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103747692] [2020-11-22 13:02:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:35,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:35,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:35,325 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:02:35,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:02:35,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:02:35,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:02:35 BoogieIcfgContainer [2020-11-22 13:02:35,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:02:35,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:02:35,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:02:35,345 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:02:35,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:34" (3/4) ... [2020-11-22 13:02:35,349 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:02:35,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:02:35,352 INFO L168 Benchmark]: Toolchain (without parser) took 1099.02 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 59.1 MB in the end (delta: 20.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:35,353 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:35,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.29 ms. Allocated memory is still 113.2 MB. Free memory was 79.7 MB in the beginning and 88.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:35,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.70 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:35,355 INFO L168 Benchmark]: Boogie Preprocessor took 19.62 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 86.4 MB in the end (delta: 918.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:35,356 INFO L168 Benchmark]: RCFGBuilder took 392.55 ms. Allocated memory is still 113.2 MB. Free memory was 86.4 MB in the beginning and 72.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:35,357 INFO L168 Benchmark]: TraceAbstraction took 394.48 ms. Allocated memory is still 113.2 MB. Free memory was 71.1 MB in the beginning and 59.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:35,360 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 113.2 MB. Free memory was 59.5 MB in the beginning and 59.1 MB in the end (delta: 330.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:35,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.29 ms. Allocated memory is still 113.2 MB. Free memory was 79.7 MB in the beginning and 88.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.70 ms. Allocated memory is still 113.2 MB. Free memory was 88.8 MB in the beginning and 87.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.62 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 86.4 MB in the end (delta: 918.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 392.55 ms. Allocated memory is still 113.2 MB. Free memory was 86.4 MB in the beginning and 72.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 394.48 ms. Allocated memory is still 113.2 MB. Free memory was 71.1 MB in the beginning and 59.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 113.2 MB. Free memory was 59.5 MB in the beginning and 59.1 MB in the end (delta: 330.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "float-zero-sum1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2020-11-22 13:02:37,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:37,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:37,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:37,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:37,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:37,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:37,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:37,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:37,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:37,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:37,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:37,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:37,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:37,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:37,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:37,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:37,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:37,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:37,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:37,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:37,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:37,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:37,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:37,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:37,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:37,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:37,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:37,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:37,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:37,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:37,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:37,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:37,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:37,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:37,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:37,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:37,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:37,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:37,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:37,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:37,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:02:37,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:37,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:37,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:37,924 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:37,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:37,925 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:37,925 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:37,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:37,925 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:37,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:37,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:37,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:37,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:37,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:02:37,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:37,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:02:37,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:37,930 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:02:37,930 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:02:37,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:37,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:02:37,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:37,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:02:37,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:37,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:02:37,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:37,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:37,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:37,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:37,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:37,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:02:37,933 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:02:37,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:02:37,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:02:37,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:37,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:37,935 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_3e470185-50f7-4f68-81f4-e590703b720c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-11-22 13:02:38,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:38,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:38,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:38,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:38,336 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:38,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-22 13:02:38,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/d45cfb935/30f1b8ed4a2b47a8a9b6ca3abeb10aa4/FLAGb8308e0fb [2020-11-22 13:02:38,864 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:38,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-11-22 13:02:38,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/d45cfb935/30f1b8ed4a2b47a8a9b6ca3abeb10aa4/FLAGb8308e0fb [2020-11-22 13:02:39,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/data/d45cfb935/30f1b8ed4a2b47a8a9b6ca3abeb10aa4 [2020-11-22 13:02:39,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:39,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:39,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:39,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:39,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:39,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792c303c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39, skipping insertion in model container [2020-11-22 13:02:39,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:39,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:39,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:39,604 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:39,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:39,667 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:39,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39 WrapperNode [2020-11-22 13:02:39,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:39,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:39,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:39,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:39,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:39,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:39,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:39,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:39,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... [2020-11-22 13:02:39,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:39,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:39,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:39,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:39,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/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) [2020-11-22 13:02:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:02:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:02:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:02:40,167 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:02:40,167 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 13:02:40,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:40 BoogieIcfgContainer [2020-11-22 13:02:40,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:02:40,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:02:40,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:02:40,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:02:40,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:39" (1/3) ... [2020-11-22 13:02:40,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455f765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:40, skipping insertion in model container [2020-11-22 13:02:40,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:39" (2/3) ... [2020-11-22 13:02:40,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2455f765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:40, skipping insertion in model container [2020-11-22 13:02:40,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:40" (3/3) ... [2020-11-22 13:02:40,177 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-11-22 13:02:40,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:02:40,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:02:40,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:02:40,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:02:40,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:02:40,262 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:02:40,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:02:40,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:02:40,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:02:40,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:02:40,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:02:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-22 13:02:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:02:40,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:40,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:02:40,281 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:02:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-11-22 13:02:40,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:02:40,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355339733] [2020-11-22 13:02:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/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 [2020-11-22 13:02:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:40,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:02:40,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:02:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:40,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:02:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355339733] [2020-11-22 13:02:40,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:02:40,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 13:02:40,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910517414] [2020-11-22 13:02:40,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:02:40,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:02:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:02:40,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:02:40,693 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2020-11-22 13:02:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:02:40,785 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-22 13:02:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:02:40,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-22 13:02:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:02:40,794 INFO L225 Difference]: With dead ends: 17 [2020-11-22 13:02:40,794 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:02:40,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:02:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:02:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:02:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:02:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:02:40,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-22 13:02:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:02:40,821 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:02:40,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:02:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:02:40,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:02:41,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:02:41,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:02:41,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:02:41,095 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:02:41,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:02:41,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:02:41,095 INFO L270 CegarLoopResult]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:02:41,096 INFO L270 CegarLoopResult]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point L114-2(line 114) no Hoare annotation was computed. [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 13:02:41,096 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 13:02:41,104 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,106 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,108 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,108 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,109 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,109 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,110 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,110 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:02:41 BoogieIcfgContainer [2020-11-22 13:02:41,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:02:41,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:02:41,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:02:41,113 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:02:41,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:40" (3/4) ... [2020-11-22 13:02:41,121 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:02:41,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:02:41,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:02:41,131 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:02:41,131 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:02:41,166 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3e470185-50f7-4f68-81f4-e590703b720c/bin/utaipan/witness.graphml [2020-11-22 13:02:41,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:02:41,168 INFO L168 Benchmark]: Toolchain (without parser) took 1795.38 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.2 MB in the beginning and 46.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 522.0 kB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,169 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:41,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.46 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:41,171 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 35.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,171 INFO L168 Benchmark]: RCFGBuilder took 438.22 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 23.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,172 INFO L168 Benchmark]: TraceAbstraction took 941.06 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 48.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,173 INFO L168 Benchmark]: Witness Printer took 54.03 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 46.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:41,176 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 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.46 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 35.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 438.22 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 23.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 941.06 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 48.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Witness Printer took 54.03 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 46.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 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 * 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 119]: Loop Invariant [2020-11-22 13:02:41,183 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,184 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,184 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,184 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 110]: Loop Invariant [2020-11-22 13:02:41,184 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,185 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-22 13:02:41,185 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-22 13:02:41,185 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 10 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...