./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/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 b42939eee3e11712ad53342d1b2656dec849a2d0 ............................................................................................................................................................................................................................................................................................................ 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_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/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 b42939eee3e11712ad53342d1b2656dec849a2d0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:06:56,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:56,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:56,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:56,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:56,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:56,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:56,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:56,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:56,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:56,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:56,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:56,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:56,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:56,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:56,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:56,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:56,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:56,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:56,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:56,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:56,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:56,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:56,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:56,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:56,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:56,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:56,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:56,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:56,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:56,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:56,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:56,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:56,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:56,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:56,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:56,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:56,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:56,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:56,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:56,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:56,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:56,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:56,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:56,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:56,971 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:56,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:56,971 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:56,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:56,972 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:56,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:56,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:56,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:56,974 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:56,974 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:56,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:56,975 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:56,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:56,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:56,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:56,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:56,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:56,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:56,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:56,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:56,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:56,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:56,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:56,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:56,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:56,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:56,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:56,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:56,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:56,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:56,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:56,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:56,981 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:56,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:56,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:56,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:56,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:56,982 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_bc9616fe-450b-4784-b209-1cfbd795ba8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2020-11-22 13:06:57,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:57,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:57,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:57,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:57,264 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:57,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-11-22 13:06:57,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/eab7e41c3/70f31c2823a346ed8fa0c4c043515eba/FLAG7a27d5465 [2020-11-22 13:06:57,827 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:57,827 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-11-22 13:06:57,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/eab7e41c3/70f31c2823a346ed8fa0c4c043515eba/FLAG7a27d5465 [2020-11-22 13:06:58,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/eab7e41c3/70f31c2823a346ed8fa0c4c043515eba [2020-11-22 13:06:58,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:58,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:58,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:58,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:58,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d9664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58, skipping insertion in model container [2020-11-22 13:06:58,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:58,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:58,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,456 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:58,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,500 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58 WrapperNode [2020-11-22 13:06:58,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:58,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:58,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:58,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:58,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:58,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:58,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:58,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/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 13:06:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:06:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:06:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:06:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:59,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:59,506 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:06:59,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59 BoogieIcfgContainer [2020-11-22 13:06:59,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:59,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:59,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:59,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:59,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:58" (1/3) ... [2020-11-22 13:06:59,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fb779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (2/3) ... [2020-11-22 13:06:59,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fb779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/3) ... [2020-11-22 13:06:59,520 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-11-22 13:06:59,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:59,535 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:59,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:59,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:59,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:59,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:59,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:59,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:59,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:59,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:59,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 13:06:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:59,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,616 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 561802692, now seen corresponding path program 1 times [2020-11-22 13:06:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:59,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379954381] [2020-11-22 13:06:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:59,765 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 13:06:59,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379954381] [2020-11-22 13:06:59,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:59,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:59,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478204465] [2020-11-22 13:06:59,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:59,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:59,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:59,789 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-22 13:06:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:59,807 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-11-22 13:06:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:59,809 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:06:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:59,831 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:06:59,832 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:06:59,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:06:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:06:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:06:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-11-22 13:06:59,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2020-11-22 13:06:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:59,870 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-11-22 13:06:59,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-11-22 13:06:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:59,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:59,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -595763043, now seen corresponding path program 1 times [2020-11-22 13:06:59,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:59,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609258840] [2020-11-22 13:06:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:59,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:00,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:00,055 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:07:00,055 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:07:00,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:07:00,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:00 BoogieIcfgContainer [2020-11-22 13:07:00,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:00,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:00,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:00,091 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:00,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/4) ... [2020-11-22 13:07:00,095 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:07:00,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:00,097 INFO L168 Benchmark]: Toolchain (without parser) took 1891.59 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.5 MB in the beginning and 56.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,097 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:00,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.90 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 71.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.72 ms. Allocated memory is still 94.4 MB. Free memory was 71.4 MB in the beginning and 69.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,100 INFO L168 Benchmark]: Boogie Preprocessor took 30.07 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:00,100 INFO L168 Benchmark]: RCFGBuilder took 934.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 67.9 MB in the beginning and 79.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,101 INFO L168 Benchmark]: TraceAbstraction took 580.48 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 56.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:00,101 INFO L168 Benchmark]: Witness Printer took 4.33 ms. Allocated memory is still 113.2 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:00,105 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 94.4 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.90 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 71.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.72 ms. Allocated memory is still 94.4 MB. Free memory was 71.4 MB in the beginning and 69.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.07 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 934.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 67.9 MB in the beginning and 79.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 580.48 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 56.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.33 ms. Allocated memory is still 113.2 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L90] double x = 0.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L49] COND TRUE j0 > 51 [L50] COND TRUE j0 == 0x400 [L51] return x + x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double res = floor_double(x); [L82] return x != x; [L94] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1051.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:02,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:02,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:02,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:02,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:02,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:02,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:02,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:02,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:02,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:02,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:02,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:02,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:02,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:02,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:02,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:02,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:02,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:02,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:02,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:02,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:02,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:02,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:02,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:02,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:02,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:02,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:02,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:02,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:02,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:02,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:02,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:02,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:02,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:02,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:02,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:02,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:02,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:02,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:02,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:02,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:02,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:07:02,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:02,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:02,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:02,829 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:02,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:02,830 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:02,830 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:02,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:02,830 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:02,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:02,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:02,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:02,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:02,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:07:02,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:02,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:07:02,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:02,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:07:02,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:07:02,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:02,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:07:02,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:02,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:07:02,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:02,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:07:02,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:02,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:02,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:02,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:02,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:02,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:07:02,837 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:07:02,838 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:07:02,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:07:02,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:02,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:02,839 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_bc9616fe-450b-4784-b209-1cfbd795ba8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2020-11-22 13:07:03,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:03,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:03,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:03,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:03,311 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:03,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-11-22 13:07:03,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/2a71a284a/1cca8b26bda44879a20b962f326df7dd/FLAGaeefe60c4 [2020-11-22 13:07:03,993 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:03,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-11-22 13:07:04,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/2a71a284a/1cca8b26bda44879a20b962f326df7dd/FLAGaeefe60c4 [2020-11-22 13:07:04,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/data/2a71a284a/1cca8b26bda44879a20b962f326df7dd [2020-11-22 13:07:04,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:04,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:04,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:04,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:04,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:04,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490e5646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04, skipping insertion in model container [2020-11-22 13:07:04,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:04,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:04,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:04,621 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:04,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:04,719 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:04,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04 WrapperNode [2020-11-22 13:07:04,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:04,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:04,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:04,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:04,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:04,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:04,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:04,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:04,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... [2020-11-22 13:07:04,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:04,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:04,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:04,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:04,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/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 13:07:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 13:07:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 13:07:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:07:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:07:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:07:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:07:06,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:06,760 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:07:06,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:06 BoogieIcfgContainer [2020-11-22 13:07:06,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:06,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:06,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:06,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:06,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:04" (1/3) ... [2020-11-22 13:07:06,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20100b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:06, skipping insertion in model container [2020-11-22 13:07:06,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:04" (2/3) ... [2020-11-22 13:07:06,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20100b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:06, skipping insertion in model container [2020-11-22 13:07:06,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:06" (3/3) ... [2020-11-22 13:07:06,770 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-11-22 13:07:06,782 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:06,787 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:07:06,799 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:07:06,840 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:06,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:07:06,841 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:06,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:06,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:06,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:06,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:06,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-22 13:07:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:07:06,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:06,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:06,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2020-11-22 13:07:06,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:06,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802749197] [2020-11-22 13:07:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/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 13:07:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:07,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:07:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:07,021 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 13:07:07,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:07,026 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 13:07:07,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802749197] [2020-11-22 13:07:07,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:07,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:07:07,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685052977] [2020-11-22 13:07:07,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:07:07,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:07,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:07:07,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:07,049 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-22 13:07:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:07,077 INFO L93 Difference]: Finished difference Result 67 states and 105 transitions. [2020-11-22 13:07:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:07:07,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 13:07:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:07,087 INFO L225 Difference]: With dead ends: 67 [2020-11-22 13:07:07,087 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 13:07:07,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 13:07:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-22 13:07:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 13:07:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-22 13:07:07,125 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2020-11-22 13:07:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:07,126 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-22 13:07:07,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:07:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-22 13:07:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:07:07,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:07,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:07,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:07:07,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:07,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2020-11-22 13:07:07,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:07,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858727356] [2020-11-22 13:07:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:07:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:07,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:07:07,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:07,745 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 13:07:07,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:07,874 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 13:07:07,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858727356] [2020-11-22 13:07:07,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:07,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:07:07,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397297311] [2020-11-22 13:07:07,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:07:07,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:07,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:07:07,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:07:07,878 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 10 states. [2020-11-22 13:07:09,370 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-22 13:07:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:09,396 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2020-11-22 13:07:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:07:09,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-22 13:07:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:09,397 INFO L225 Difference]: With dead ends: 42 [2020-11-22 13:07:09,397 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 13:07:09,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:07:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 13:07:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-22 13:07:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:07:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-22 13:07:09,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2020-11-22 13:07:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:09,402 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-22 13:07:09,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:07:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-22 13:07:09,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:07:09,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:09,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:09,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:07:09,609 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:07:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash -649399050, now seen corresponding path program 1 times [2020-11-22 13:07:09,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:09,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605723647] [2020-11-22 13:07:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:07:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:09,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:07:09,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:09,963 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 13:07:09,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:10,130 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 13:07:10,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605723647] [2020-11-22 13:07:10,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:10,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 13:07:10,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488233153] [2020-11-22 13:07:10,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:07:10,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:10,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:07:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:07:10,132 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-11-22 13:07:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:10,343 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-22 13:07:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:07:10,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-22 13:07:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:10,345 INFO L225 Difference]: With dead ends: 21 [2020-11-22 13:07:10,345 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:07:10,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:07:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:07:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:07:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:07:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:07:10,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-22 13:07:10,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:10,347 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:07:10,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:07:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:07:10,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:07:10,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point L60(lines 60 67) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point L94(lines 94 97) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:07:10,677 INFO L274 CegarLoopResult]: For program point L28(lines 28 71) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L270 CegarLoopResult]: At program point L78(lines 18 79) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res|))) [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 26) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L30(lines 30 37) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L72-1(lines 18 79) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L72-2(lines 72 77) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L64(lines 64 65) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L31(lines 31 36) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L64-2(lines 64 65) no Hoare annotation was computed. [2020-11-22 13:07:10,678 INFO L274 CegarLoopResult]: For program point L56(lines 56 57) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L270 CegarLoopResult]: At program point L82(line 82) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L49(lines 49 71) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L277 CegarLoopResult]: At program point L99(lines 84 100) the Hoare annotation is: true [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L33(lines 33 36) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L58(lines 58 70) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L50(lines 50 53) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L42(lines 42 47) no Hoare annotation was computed. [2020-11-22 13:07:10,679 INFO L274 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2020-11-22 13:07:10,680 INFO L274 CegarLoopResult]: For program point L59-1(lines 59 68) no Hoare annotation was computed. [2020-11-22 13:07:10,680 INFO L274 CegarLoopResult]: For program point L43(lines 43 44) no Hoare annotation was computed. [2020-11-22 13:07:10,680 INFO L274 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-11-22 13:07:10,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,686 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,692 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,693 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,693 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,693 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,694 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,694 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:10 BoogieIcfgContainer [2020-11-22 13:07:10,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:10,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:10,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:10,697 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:10,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:06" (3/4) ... [2020-11-22 13:07:10,701 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:07:10,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-22 13:07:10,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:07:10,714 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:07:10,714 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:07:10,739 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-22 13:07:10,740 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-11-22 13:07:10,741 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2020-11-22 13:07:10,767 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc9616fe-450b-4784-b209-1cfbd795ba8c/bin/utaipan/witness.graphml [2020-11-22 13:07:10,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:10,769 INFO L168 Benchmark]: Toolchain (without parser) took 6371.70 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.6 MB in the beginning and 43.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,769 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:10,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.69 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 39.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:10,771 INFO L168 Benchmark]: Boogie Preprocessor took 64.91 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,771 INFO L168 Benchmark]: RCFGBuilder took 1903.11 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.5 MB in the beginning and 44.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,772 INFO L168 Benchmark]: TraceAbstraction took 3933.08 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 46.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,772 INFO L168 Benchmark]: Witness Printer took 70.28 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 43.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:10,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.69 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 39.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.91 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1903.11 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.5 MB in the beginning and 44.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3933.08 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 46.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.28 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 43.4 MB in the end (delta: 3.2 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] - 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 82]: Loop Invariant [2020-11-22 13:07:10,783 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,783 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,783 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,784 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant [2020-11-22 13:07:10,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 18]: Loop Invariant [2020-11-22 13:07:10,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 13:07:10,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 25 SDslu, 94 SDs, 0 SdLazy, 72 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 3121 SizeOfPredicates, 18 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...