./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/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 bb25cff741a4983d608d95bf512bab62b5988d3b ............................................................................................................................................................................................................................................... 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_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/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 bb25cff741a4983d608d95bf512bab62b5988d3b ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:39:30,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:39:30,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:39:30,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:39:30,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:39:30,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:39:30,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:39:30,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:39:30,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:39:30,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:39:30,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:39:30,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:39:30,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:39:30,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:39:30,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:39:30,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:39:30,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:39:30,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:39:30,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:39:30,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:39:30,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:39:30,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:39:30,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:39:30,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:39:30,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:39:30,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:39:30,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:39:30,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:39:30,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:39:30,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:39:30,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:39:30,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:39:30,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:39:30,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:39:30,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:39:30,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:39:30,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:39:30,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:39:30,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:39:30,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:39:30,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:39:30,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:39:30,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:39:30,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:39:30,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:39:30,845 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:39:30,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:39:30,846 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:39:30,846 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:39:30,847 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:39:30,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:39:30,847 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:39:30,848 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:39:30,849 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:39:30,849 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:39:30,849 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:39:30,849 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:39:30,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:39:30,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:39:30,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:39:30,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:39:30,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:39:30,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:39:30,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:39:30,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:39:30,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:39:30,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:39:30,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:39:30,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:39:30,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:39:30,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:39:30,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:39:30,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:39:30,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:39:30,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:39:30,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:39:30,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:39:30,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:39:30,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:39:30,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:39:30,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:39:30,859 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_50c7cca0-0449-4283-93cc-44d67905999f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2020-12-03 12:39:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:39:31,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:39:31,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:39:31,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:39:31,198 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:39:31,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-12-03 12:39:31,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/99fad1cb4/bf970dd65849420a9d4fa6793c99098d/FLAGbb6b20dba [2020-12-03 12:39:31,707 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:39:31,708 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-12-03 12:39:31,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/99fad1cb4/bf970dd65849420a9d4fa6793c99098d/FLAGbb6b20dba [2020-12-03 12:39:32,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/99fad1cb4/bf970dd65849420a9d4fa6793c99098d [2020-12-03 12:39:32,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:39:32,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:39:32,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:32,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:39:32,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:39:32,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6270adfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32, skipping insertion in model container [2020-12-03 12:39:32,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:39:32,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:39:32,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2020-12-03 12:39:32,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:32,341 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:39:32,381 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2020-12-03 12:39:32,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:32,403 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:39:32,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32 WrapperNode [2020-12-03 12:39:32,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:32,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:32,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:39:32,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:39:32,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:32,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:39:32,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:39:32,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:39:32,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... [2020-12-03 12:39:32,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:39:32,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:39:32,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:39:32,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:39:32,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/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 [2020-12-03 12:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:39:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:39:32,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:39:32,765 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:39:32,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:32 BoogieIcfgContainer [2020-12-03 12:39:32,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:39:32,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:39:32,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:39:32,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:39:32,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:39:32" (1/3) ... [2020-12-03 12:39:32,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff88a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:32, skipping insertion in model container [2020-12-03 12:39:32,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:32" (2/3) ... [2020-12-03 12:39:32,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff88a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:32, skipping insertion in model container [2020-12-03 12:39:32,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:32" (3/3) ... [2020-12-03 12:39:32,797 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-12-03 12:39:32,823 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:39:32,826 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:39:32,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:39:32,863 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:39:32,863 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:39:32,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:39:32,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:39:32,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:39:32,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:39:32,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:39:32,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:39:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-03 12:39:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:39:32,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:32,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:39:32,893 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:32,901 INFO L82 PathProgramCache]: Analyzing trace with hash 44367, now seen corresponding path program 1 times [2020-12-03 12:39:32,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:32,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535185415] [2020-12-03 12:39:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:33,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:33,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:33,062 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:39:33,062 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:39:33,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:39:33,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:39:33 BoogieIcfgContainer [2020-12-03 12:39:33,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:39:33,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:39:33,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:39:33,084 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:39:33,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:32" (3/4) ... [2020-12-03 12:39:33,088 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:39:33,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:39:33,094 INFO L168 Benchmark]: Toolchain (without parser) took 991.30 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 66.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:33,096 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:33,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.19 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 92.5 MB in the end (delta: -69.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:33,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:33,101 INFO L168 Benchmark]: Boogie Preprocessor took 18.71 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 90.4 MB in the end (delta: 756.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:33,102 INFO L168 Benchmark]: RCFGBuilder took 310.52 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 78.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:33,103 INFO L168 Benchmark]: TraceAbstraction took 304.71 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 66.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:33,104 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 115.3 MB. Free memory was 66.5 MB in the beginning and 66.3 MB in the end (delta: 208.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:33,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.19 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 92.5 MB in the end (delta: -69.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.97 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.71 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 90.4 MB in the end (delta: 756.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 310.52 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 78.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 304.71 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 66.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.63 ms. Allocated memory is still 115.3 MB. Free memory was 66.5 MB in the beginning and 66.3 MB in the end (delta: 208.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; [L11] COND TRUE !(d == fp) [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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 0.2.0-7b2dab5 [2020-12-03 12:39:35,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:39:35,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:39:35,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:39:35,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:39:35,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:39:35,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:39:35,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:39:35,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:39:35,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:39:35,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:39:35,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:39:35,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:39:35,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:39:35,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:39:35,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:39:35,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:39:35,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:39:35,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:39:35,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:39:35,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:39:35,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:39:35,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:39:35,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:39:35,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:39:35,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:39:35,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:39:35,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:39:35,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:39:35,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:39:35,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:39:35,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:39:35,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:39:35,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:39:35,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:39:35,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:39:35,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:39:35,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:39:35,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:39:35,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:39:35,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:39:35,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:39:35,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:39:35,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:39:35,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:39:35,877 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:39:35,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:39:35,877 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:39:35,877 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:39:35,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:39:35,878 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:39:35,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:39:35,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:39:35,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:39:35,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:39:35,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:39:35,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:39:35,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:39:35,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:39:35,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:39:35,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:39:35,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:39:35,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:39:35,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:39:35,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:39:35,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:39:35,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:39:35,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:39:35,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:39:35,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:39:35,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:39:35,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:39:35,886 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:39:35,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:39:35,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:39:35,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:39:35,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:39:35,887 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_50c7cca0-0449-4283-93cc-44d67905999f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2020-12-03 12:39:36,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:39:36,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:39:36,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:39:36,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:39:36,310 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:39:36,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-12-03 12:39:36,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/9a1a49c4d/7b4acabc04fb492eab0aa2db780f254c/FLAG55883de14 [2020-12-03 12:39:36,933 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:39:36,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2020-12-03 12:39:36,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/9a1a49c4d/7b4acabc04fb492eab0aa2db780f254c/FLAG55883de14 [2020-12-03 12:39:37,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/data/9a1a49c4d/7b4acabc04fb492eab0aa2db780f254c [2020-12-03 12:39:37,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:39:37,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:39:37,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:37,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:39:37,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:39:37,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465a2e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37, skipping insertion in model container [2020-12-03 12:39:37,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:39:37,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:39:37,479 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2020-12-03 12:39:37,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:37,499 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:39:37,517 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2020-12-03 12:39:37,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:37,533 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:39:37,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37 WrapperNode [2020-12-03 12:39:37,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:37,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:37,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:39:37,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:39:37,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:37,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:39:37,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:39:37,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:39:37,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... [2020-12-03 12:39:37,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:39:37,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:39:37,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:39:37,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:39:37,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/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 [2020-12-03 12:39:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:39:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:39:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:39:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:39:38,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:39:38,094 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:39:38,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:38 BoogieIcfgContainer [2020-12-03 12:39:38,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:39:38,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:39:38,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:39:38,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:39:38,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:39:37" (1/3) ... [2020-12-03 12:39:38,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10df65b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:38, skipping insertion in model container [2020-12-03 12:39:38,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:37" (2/3) ... [2020-12-03 12:39:38,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10df65b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:38, skipping insertion in model container [2020-12-03 12:39:38,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:38" (3/3) ... [2020-12-03 12:39:38,106 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-12-03 12:39:38,117 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:39:38,119 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:39:38,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:39:38,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:39:38,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:39:38,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:39:38,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:39:38,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:39:38,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:39:38,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:39:38,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:39:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-03 12:39:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:39:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:38,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:39:38,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:39:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-03 12:39:38,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:39:38,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366441184] [2020-12-03 12:39:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/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 [2020-12-03 12:39:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:38,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:39:38,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:39:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:38,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:39:38,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366441184] [2020-12-03 12:39:38,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:39:38,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:39:38,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053133423] [2020-12-03 12:39:38,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:39:38,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:39:38,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:39:38,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:38,414 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-03 12:39:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:38,434 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-03 12:39:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:39:38,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:39:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:38,443 INFO L225 Difference]: With dead ends: 13 [2020-12-03 12:39:38,444 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:39:38,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:39:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:39:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:39:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:39:38,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-12-03 12:39:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:38,473 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:39:38,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:39:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:39:38,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:39:38,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:39:38,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:39:38,725 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:39:38,726 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-03 12:39:38,726 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:39:38,726 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-03 12:39:38,726 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-03 12:39:38,727 INFO L258 CegarLoopResult]: At program point L13(lines 5 14) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (and (= ULTIMATE.start_main_~d~0 (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) (= ULTIMATE.start_main_~fp~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))))))) [2020-12-03 12:39:38,728 INFO L262 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-12-03 12:39:38,728 INFO L262 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-12-03 12:39:38,728 INFO L262 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-12-03 12:39:38,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,740 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,740 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,741 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:39:38 BoogieIcfgContainer [2020-12-03 12:39:38,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:39:38,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:39:38,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:39:38,760 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:39:38,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:38" (3/4) ... [2020-12-03 12:39:38,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:39:38,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-03 12:39:38,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:39:38,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:39:38,777 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:39:38,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) [2020-12-03 12:39:38,819 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_50c7cca0-0449-4283-93cc-44d67905999f/bin/utaipan/witness.graphml [2020-12-03 12:39:38,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:39:38,827 INFO L168 Benchmark]: Toolchain (without parser) took 1516.51 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 46.1 MB in the beginning and 46.4 MB in the end (delta: -286.6 kB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,827 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:38,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.51 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 35.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.88 ms. Allocated memory is still 65.0 MB. Free memory was 35.7 MB in the beginning and 48.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,831 INFO L168 Benchmark]: Boogie Preprocessor took 53.76 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.7 MB in the end (delta: 912.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:38,832 INFO L168 Benchmark]: RCFGBuilder took 430.74 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 37.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,835 INFO L168 Benchmark]: TraceAbstraction took 662.17 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.7 MB in the beginning and 48.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,836 INFO L168 Benchmark]: Witness Printer took 59.26 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:38,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.51 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 35.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.88 ms. Allocated memory is still 65.0 MB. Free memory was 35.7 MB in the beginning and 48.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.76 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.7 MB in the end (delta: 912.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 430.74 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 37.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 662.17 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.7 MB in the beginning and 48.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.26 ms. Allocated memory is still 79.7 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant [2020-12-03 12:39:38,856 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,856 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,857 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:39:38,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 54 SizeOfPredicates, 4 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 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 proved your program to be correct! Received shutdown request...