./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ....................................................................................................................................................................................................................................................................................................... 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_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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 2c4d19baf0429684b688f90d909ef640d9fb6537 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:38:09,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:38:09,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:38:09,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:38:09,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:38:09,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:38:09,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:38:09,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:38:09,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:38:09,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:38:09,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:38:09,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:38:09,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:38:09,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:38:09,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:38:09,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:38:09,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:38:09,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:38:09,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:38:09,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:38:09,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:38:09,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:38:09,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:38:09,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:38:09,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:38:09,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:38:09,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:38:09,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:38:09,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:38:09,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:38:09,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:38:09,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:38:09,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:38:09,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:38:09,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:38:09,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:38:09,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:38:09,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:38:09,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:38:09,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:38:09,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:38:09,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:38:09,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:38:09,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:38:09,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:38:09,901 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:38:09,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:38:09,901 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:38:09,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:38:09,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:38:09,902 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:38:09,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:38:09,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:38:09,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:38:09,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:38:09,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:38:09,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:38:09,905 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_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-12-09 04:38:10,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:38:10,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:38:10,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:38:10,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:38:10,098 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:38:10,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-12-09 04:38:10,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/affeb03d5/a9600b0a68e248b091a7d71783568b55/FLAG368bdd528 [2020-12-09 04:38:10,508 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:38:10,508 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-12-09 04:38:10,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/affeb03d5/a9600b0a68e248b091a7d71783568b55/FLAG368bdd528 [2020-12-09 04:38:10,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/affeb03d5/a9600b0a68e248b091a7d71783568b55 [2020-12-09 04:38:10,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:38:10,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:38:10,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:10,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:38:10,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:38:10,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:10" (1/1) ... [2020-12-09 04:38:10,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4e1861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:10, skipping insertion in model container [2020-12-09 04:38:10,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:10" (1/1) ... [2020-12-09 04:38:10,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:38:10,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:38:11,051 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2020-12-09 04:38:11,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:11,059 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:38:11,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2020-12-09 04:38:11,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:11,087 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:38:11,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11 WrapperNode [2020-12-09 04:38:11,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:11,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:11,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:38:11,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:38:11,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:11,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:38:11,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:38:11,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:38:11,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... [2020-12-09 04:38:11,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:38:11,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:38:11,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:38:11,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:38:11,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 04:38:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:38:11,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:38:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 04:38:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:38:11,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:38:11,414 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 04:38:11,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:11 BoogieIcfgContainer [2020-12-09 04:38:11,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:38:11,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:38:11,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:38:11,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:38:11,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:38:10" (1/3) ... [2020-12-09 04:38:11,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f738c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:11, skipping insertion in model container [2020-12-09 04:38:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:11" (2/3) ... [2020-12-09 04:38:11,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f738c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:11, skipping insertion in model container [2020-12-09 04:38:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:11" (3/3) ... [2020-12-09 04:38:11,426 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-12-09 04:38:11,436 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:38:11,438 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:38:11,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:38:11,462 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:38:11,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:38:11,462 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:38:11,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:38:11,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:38:11,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:38:11,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:38:11,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:38:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 04:38:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:38:11,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:11,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:11,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:11,481 INFO L82 PathProgramCache]: Analyzing trace with hash 356184293, now seen corresponding path program 1 times [2020-12-09 04:38:11,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:11,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109650870] [2020-12-09 04:38:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:38:11,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109650870] [2020-12-09 04:38:11,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:38:11,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:38:11,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936470889] [2020-12-09 04:38:11,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:38:11,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:38:11,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:38:11,594 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-09 04:38:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:11,604 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-12-09 04:38:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:38:11,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 04:38:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:11,611 INFO L225 Difference]: With dead ends: 35 [2020-12-09 04:38:11,611 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 04:38:11,613 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 [2020-12-09 04:38:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 04:38:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 04:38:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 04:38:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-12-09 04:38:11,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2020-12-09 04:38:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:11,635 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-12-09 04:38:11,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:38:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-09 04:38:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:38:11,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:11,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:11,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:38:11,636 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2014115286, now seen corresponding path program 1 times [2020-12-09 04:38:11,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:11,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982545485] [2020-12-09 04:38:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:38:11,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:38:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:38:11,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:38:11,707 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 04:38:11,707 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:38:11,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:38:11,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:38:11 BoogieIcfgContainer [2020-12-09 04:38:11,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:38:11,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:38:11,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:38:11,725 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:38:11,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:11" (3/4) ... [2020-12-09 04:38:11,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 04:38:11,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:38:11,730 INFO L168 Benchmark]: Toolchain (without parser) took 802.86 ms. Allocated memory is still 102.8 MB. Free memory was 81.2 MB in the beginning and 58.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:11,730 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:11,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.80 ms. Allocated memory is still 102.8 MB. Free memory was 81.0 MB in the beginning and 70.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:11,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 102.8 MB. Free memory was 70.6 MB in the beginning and 68.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:11,732 INFO L168 Benchmark]: Boogie Preprocessor took 20.66 ms. Allocated memory is still 102.8 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:11,732 INFO L168 Benchmark]: RCFGBuilder took 284.22 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 80.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:11,733 INFO L168 Benchmark]: TraceAbstraction took 303.44 ms. Allocated memory is still 102.8 MB. Free memory was 80.4 MB in the beginning and 58.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:11,733 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 58.3 MB in the end (delta: 408.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:11,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.80 ms. Allocated memory is still 102.8 MB. Free memory was 81.0 MB in the beginning and 70.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 102.8 MB. Free memory was 70.6 MB in the beginning and 68.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.66 ms. Allocated memory is still 102.8 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.22 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 80.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 303.44 ms. Allocated memory is still 102.8 MB. Free memory was 80.4 MB in the beginning and 58.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.01 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 58.3 MB in the end (delta: 408.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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, 0.0s 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 0.2.0-7b2dab5 [2020-12-09 04:38:13,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:38:13,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:38:13,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:38:13,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:38:13,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:38:13,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:38:13,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:38:13,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:38:13,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:38:13,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:38:13,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:38:13,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:38:13,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:38:13,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:38:13,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:38:13,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:38:13,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:38:13,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:38:13,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:38:13,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:38:13,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:38:13,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:38:13,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:38:13,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:38:13,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:38:13,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:38:13,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:38:13,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:38:13,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:38:13,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:38:13,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:38:13,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:38:13,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:38:13,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:38:13,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:38:13,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:38:13,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:38:13,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:38:13,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:38:13,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:38:13,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 04:38:13,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:38:13,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:38:13,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:38:13,322 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:38:13,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:38:13,322 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:38:13,322 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:38:13,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:38:13,323 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:38:13,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:38:13,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:38:13,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:38:13,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:38:13,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:38:13,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:38:13,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:38:13,326 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 04:38:13,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 04:38:13,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:38:13,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:38:13,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:38:13,326 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_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-12-09 04:38:13,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:38:13,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:38:13,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:38:13,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:38:13,580 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:38:13,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-12-09 04:38:13,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/1afd9bbcb/5ecdbccdc0fd40a198688fba14fb7ecd/FLAGf9b03a96b [2020-12-09 04:38:14,013 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:38:14,013 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-12-09 04:38:14,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/1afd9bbcb/5ecdbccdc0fd40a198688fba14fb7ecd/FLAGf9b03a96b [2020-12-09 04:38:14,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/data/1afd9bbcb/5ecdbccdc0fd40a198688fba14fb7ecd [2020-12-09 04:38:14,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:38:14,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:38:14,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:14,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:38:14,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:38:14,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f75320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14, skipping insertion in model container [2020-12-09 04:38:14,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:38:14,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:38:14,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2020-12-09 04:38:14,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:14,194 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:38:14,228 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2020-12-09 04:38:14,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:14,247 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:38:14,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14 WrapperNode [2020-12-09 04:38:14,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:14,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:14,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:38:14,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:38:14,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:14,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:38:14,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:38:14,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:38:14,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... [2020-12-09 04:38:14,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:38:14,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:38:14,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:38:14,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:38:14,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:38:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 04:38:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:38:14,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:38:14,694 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 04:38:14,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:14 BoogieIcfgContainer [2020-12-09 04:38:14,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:38:14,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:38:14,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:38:14,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:38:14,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:38:14" (1/3) ... [2020-12-09 04:38:14,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c54cf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:14, skipping insertion in model container [2020-12-09 04:38:14,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:14" (2/3) ... [2020-12-09 04:38:14,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c54cf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:14, skipping insertion in model container [2020-12-09 04:38:14,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:14" (3/3) ... [2020-12-09 04:38:14,704 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-12-09 04:38:14,714 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:38:14,717 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:38:14,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:38:14,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:38:14,745 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:38:14,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:38:14,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:38:14,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:38:14,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:38:14,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:38:14,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:38:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-09 04:38:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 04:38:14,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:14,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:14,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:14,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-12-09 04:38:14,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:38:14,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305840259] [2020-12-09 04:38:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 04:38:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 04:38:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:38:14,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:38:14,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305840259] [2020-12-09 04:38:14,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:38:14,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:38:14,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907344122] [2020-12-09 04:38:14,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:38:14,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:38:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:38:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:38:14,902 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-09 04:38:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:14,914 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2020-12-09 04:38:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:38:14,915 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 04:38:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:14,921 INFO L225 Difference]: With dead ends: 50 [2020-12-09 04:38:14,922 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 04:38:14,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:38:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 04:38:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 04:38:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 04:38:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-12-09 04:38:14,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-12-09 04:38:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:14,947 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-12-09 04:38:14,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:38:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-12-09 04:38:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 04:38:14,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:14,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:15,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 04:38:15,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-12-09 04:38:15,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:38:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480657503] [2020-12-09 04:38:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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 [2020-12-09 04:38:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:15,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 04:38:15,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:38:15,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:38:15,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480657503] [2020-12-09 04:38:15,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:38:15,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 04:38:15,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594416545] [2020-12-09 04:38:15,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 04:38:15,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:38:15,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 04:38:15,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:38:15,352 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 6 states. [2020-12-09 04:38:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:15,733 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-12-09 04:38:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 04:38:15,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 04:38:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:15,734 INFO L225 Difference]: With dead ends: 28 [2020-12-09 04:38:15,734 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 04:38:15,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 04:38:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 04:38:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 04:38:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:38:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-09 04:38:15,738 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-12-09 04:38:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:15,738 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-09 04:38:15,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 04:38:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-09 04:38:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 04:38:15,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:15,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:15,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 04:38:15,940 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2020-12-09 04:38:15,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:38:15,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175181663] [2020-12-09 04:38:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/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 [2020-12-09 04:38:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:16,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 04:38:16,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:38:16,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:38:16,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175181663] [2020-12-09 04:38:16,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:38:16,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 04:38:16,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704693368] [2020-12-09 04:38:16,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:38:16,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:38:16,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:38:16,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:38:16,128 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-12-09 04:38:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:16,263 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 04:38:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:38:16,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 04:38:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:16,265 INFO L225 Difference]: With dead ends: 22 [2020-12-09 04:38:16,265 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:38:16,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 04:38:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:38:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:38:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:38:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:38:16,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 04:38:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:16,266 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:38:16,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:38:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:38:16,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:38:16,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 04:38:16,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 04:38:16,561 INFO L265 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2020-12-09 04:38:16,561 INFO L262 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L258 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_round_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x))) [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2020-12-09 04:38:16,562 INFO L262 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L258 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_round_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_round_double_~x)) [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-12-09 04:38:16,563 INFO L262 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2020-12-09 04:38:16,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,572 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,572 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,573 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,573 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,574 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,574 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,574 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,574 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:38:16 BoogieIcfgContainer [2020-12-09 04:38:16,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:38:16,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:38:16,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:38:16,576 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:38:16,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:14" (3/4) ... [2020-12-09 04:38:16,578 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:38:16,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 04:38:16,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 04:38:16,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 04:38:16,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:38:16,602 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 04:38:16,602 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 04:38:16,603 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result [2020-12-09 04:38:16,618 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a6f771d5-5cb9-4594-8797-c1fc5c8bd408/bin/utaipan/witness.graphml [2020-12-09 04:38:16,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:38:16,619 INFO L168 Benchmark]: Toolchain (without parser) took 2583.80 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 52.7 MB in the beginning and 45.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,620 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:16,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 52.0 MB in the end (delta: 583.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:16,621 INFO L168 Benchmark]: Boogie Preprocessor took 24.59 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,621 INFO L168 Benchmark]: RCFGBuilder took 392.09 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 88.1 MB in the end (delta: -39.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,622 INFO L168 Benchmark]: TraceAbstraction took 1878.25 ms. Allocated memory is still 107.0 MB. Free memory was 87.5 MB in the beginning and 49.2 MB in the end (delta: 38.4 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,622 INFO L168 Benchmark]: Witness Printer took 42.28 ms. Allocated memory is still 107.0 MB. Free memory was 49.2 MB in the beginning and 45.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:16,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 52.0 MB in the end (delta: 583.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.59 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 392.09 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 88.1 MB in the end (delta: -39.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1878.25 ms. Allocated memory is still 107.0 MB. Free memory was 87.5 MB in the beginning and 49.2 MB in the end (delta: 38.4 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * Witness Printer took 42.28 ms. Allocated memory is still 107.0 MB. Free memory was 49.2 MB in the beginning and 45.7 MB in the end (delta: 3.4 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: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant [2020-12-09 04:38:16,629 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,629 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,629 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,629 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()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 17]: Loop Invariant [2020-12-09 04:38:16,630 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,630 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,630 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,630 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()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant [2020-12-09 04:38:16,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 04:38:16,631 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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 76 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 11 QuantifiedInterpolants, 1805 SizeOfPredicates, 16 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...