./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_exact.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_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI --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 12de589994efba7ef02a09446e6dcc495aa77e08 ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI --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 12de589994efba7ef02a09446e6dcc495aa77e08 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:40,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:40,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:40,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:40,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:40,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:40,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:40,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:40,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:40,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:40,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:40,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:40,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:40,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:40,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:40,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:40,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:40,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:40,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:40,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:40,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:40,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:40,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:40,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:40,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:40,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:40,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:40,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:40,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:40,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:40,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:40,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:40,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:40,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:40,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:40,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:40,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:40,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:40,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:40,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:40,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:40,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:41,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:41,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:41,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:41,015 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:41,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:41,016 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:41,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:41,016 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:41,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:41,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:41,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:41,020 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:41,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:41,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:41,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:41,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:41,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:41,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:41,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:41,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:41,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:41,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:41,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:41,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:41,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:41,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:41,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:41,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:41,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:41,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:41,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:41,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:41,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:41,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:41,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:41,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:41,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:41,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:41,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:41,026 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_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12de589994efba7ef02a09446e6dcc495aa77e08 [2021-10-11 02:28:41,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:41,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:41,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:41,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:41,335 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:41,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-10-11 02:28:41,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/24f8a1d76/f29984f88e9a455c98750e5d44edc751/FLAG858d8d6a8 [2021-10-11 02:28:41,866 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:41,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-10-11 02:28:41,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/24f8a1d76/f29984f88e9a455c98750e5d44edc751/FLAG858d8d6a8 [2021-10-11 02:28:42,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/24f8a1d76/f29984f88e9a455c98750e5d44edc751 [2021-10-11 02:28:42,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:42,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:42,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:42,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:42,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:42,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b693162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42, skipping insertion in model container [2021-10-11 02:28:42,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:42,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:42,414 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2021-10-11 02:28:42,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:42,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:42,446 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2021-10-11 02:28:42,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:42,465 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:42,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42 WrapperNode [2021-10-11 02:28:42,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:42,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:42,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:42,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:42,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:42,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:42,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:42,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:42,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... [2021-10-11 02:28:42,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:42,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:42,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:42,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:42,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:42,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:42,809 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:28:42,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:42 BoogieIcfgContainer [2021-10-11 02:28:42,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:42,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:42,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:42,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:42,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:42" (1/3) ... [2021-10-11 02:28:42,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2cf6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:42, skipping insertion in model container [2021-10-11 02:28:42,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:42" (2/3) ... [2021-10-11 02:28:42,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2cf6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:42, skipping insertion in model container [2021-10-11 02:28:42,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:42" (3/3) ... [2021-10-11 02:28:42,821 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2021-10-11 02:28:42,835 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:42,838 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:42,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:42,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:42,873 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:42,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:42,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:42,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:42,873 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:42,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:42,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:28:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:28:42,907 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:42,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:28:42,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:42,913 INFO L82 PathProgramCache]: Analyzing trace with hash 46290, now seen corresponding path program 1 times [2021-10-11 02:28:42,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:42,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384512811] [2021-10-11 02:28:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:43,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:43,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:43,107 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:28:43,107 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:43,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:43,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:43 BoogieIcfgContainer [2021-10-11 02:28:43,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:43,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:43,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:43,140 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:43,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:42" (3/4) ... [2021-10-11 02:28:43,144 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:43,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:43,150 INFO L168 Benchmark]: Toolchain (without parser) took 893.20 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 64.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:43,152 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:43,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.82 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 51.5 MB in the beginning and 91.8 MB in the end (delta: -40.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:43,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.92 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:43,157 INFO L168 Benchmark]: Boogie Preprocessor took 18.52 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 89.8 MB in the end (delta: 636.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:43,159 INFO L168 Benchmark]: RCFGBuilder took 294.95 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 77.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:43,160 INFO L168 Benchmark]: TraceAbstraction took 318.31 ms. Allocated memory is still 113.2 MB. Free memory was 76.6 MB in the beginning and 64.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:43,160 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 113.2 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:43,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.82 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 51.5 MB in the beginning and 91.8 MB in the end (delta: -40.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.92 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.52 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 89.8 MB in the end (delta: 636.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 294.95 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 77.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 318.31 ms. Allocated memory is still 113.2 MB. Free memory was 76.6 MB in the beginning and 64.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.28 ms. Allocated memory is still 113.2 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e7f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:45,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:45,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:45,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:45,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:45,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:45,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:45,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:45,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:45,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:45,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:45,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:45,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:45,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:45,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:45,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:45,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:45,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:45,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:45,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:45,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:45,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:45,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:45,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:45,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:45,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:45,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:45,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:45,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:45,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:45,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:45,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:45,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:45,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:45,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:45,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:45,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:45,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:45,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:45,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:45,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:45,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:28:45,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:45,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:45,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:45,844 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:45,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:45,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:45,844 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:45,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:45,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:45,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:45,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:45,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:45,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:45,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:45,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:45,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:45,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:45,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:28:45,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:28:45,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:45,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:45,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:45,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:45,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:45,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:28:45,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:45,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:45,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:45,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:45,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:45,852 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:28:45,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:45,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:45,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:45,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:45,853 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_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12de589994efba7ef02a09446e6dcc495aa77e08 [2021-10-11 02:28:46,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:46,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:46,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:46,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:46,285 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:46,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-10-11 02:28:46,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/73c207762/e91a4522c953486a83fdc7a7f68e97a3/FLAG80b3e5383 [2021-10-11 02:28:47,019 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:47,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-10-11 02:28:47,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/73c207762/e91a4522c953486a83fdc7a7f68e97a3/FLAG80b3e5383 [2021-10-11 02:28:47,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/data/73c207762/e91a4522c953486a83fdc7a7f68e97a3 [2021-10-11 02:28:47,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:47,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:47,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:47,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:47,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:47,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682deaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47, skipping insertion in model container [2021-10-11 02:28:47,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:47,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:47,646 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2021-10-11 02:28:47,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:47,674 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:47,689 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/sv-benchmarks/c/float-benchs/addsub_float_exact.c[392,405] [2021-10-11 02:28:47,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:47,716 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:47,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47 WrapperNode [2021-10-11 02:28:47,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:47,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:47,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:47,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:47,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:47,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:47,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:47,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:47,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:47,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:47,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:47,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:47,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:28:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:48,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:48,610 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:28:48,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:48 BoogieIcfgContainer [2021-10-11 02:28:48,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:48,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:48,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:48,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:48,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:47" (1/3) ... [2021-10-11 02:28:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516dd97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:48, skipping insertion in model container [2021-10-11 02:28:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (2/3) ... [2021-10-11 02:28:48,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516dd97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:48, skipping insertion in model container [2021-10-11 02:28:48,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:48" (3/3) ... [2021-10-11 02:28:48,621 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2021-10-11 02:28:48,637 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:48,640 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:48,656 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:48,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:48,680 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:48,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:48,680 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:48,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:48,680 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:48,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:48,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:28:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:28:48,705 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:48,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:28:48,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:48,714 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-11 02:28:48,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:48,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521692582] [2021-10-11 02:28:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:28:48,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:49,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:49,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521692582] [2021-10-11 02:28:49,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:49,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:49,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129077305] [2021-10-11 02:28:49,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:49,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:49,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:49,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:49,078 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2021-10-11 02:28:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:49,329 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-11 02:28:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:49,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:28:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:49,358 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:28:49,359 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:49,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:49,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 02:28:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:49,384 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:49,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:49,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:49,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:28:49,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:49,681 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:49,686 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:28:49,686 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:49,686 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:28:49,686 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-10-11 02:28:49,686 INFO L258 CegarLoopResult]: At program point L17(lines 8 18) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-11 02:28:49,687 INFO L262 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-11 02:28:49,687 INFO L262 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-10-11 02:28:49,687 INFO L258 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-11 02:28:49,695 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,698 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,699 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,699 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:49 BoogieIcfgContainer [2021-10-11 02:28:49,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:49,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:49,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:49,703 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:49,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:48" (3/4) ... [2021-10-11 02:28:49,707 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:49,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:28:49,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:28:49,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:49,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:49,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42688dcf-850f-4609-bc71-94d2c8045bc5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:49,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:49,777 INFO L168 Benchmark]: Toolchain (without parser) took 2400.75 ms. Allocated memory is still 77.6 MB. Free memory was 43.3 MB in the beginning and 51.5 MB in the end (delta: -8.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,779 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.21 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 59.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 62.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,782 INFO L168 Benchmark]: Boogie Preprocessor took 55.19 ms. Allocated memory is still 77.6 MB. Free memory was 62.8 MB in the beginning and 61.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,783 INFO L168 Benchmark]: RCFGBuilder took 787.30 ms. Allocated memory is still 77.6 MB. Free memory was 61.6 MB in the beginning and 50.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,784 INFO L168 Benchmark]: TraceAbstraction took 1088.42 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 54.0 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,785 INFO L168 Benchmark]: Witness Printer took 68.54 ms. Allocated memory is still 77.6 MB. Free memory was 54.0 MB in the beginning and 51.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.21 ms. Allocated memory is still 77.6 MB. Free memory was 43.2 MB in the beginning and 59.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 62.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.19 ms. Allocated memory is still 77.6 MB. Free memory was 62.8 MB in the beginning and 61.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 787.30 ms. Allocated memory is still 77.6 MB. Free memory was 61.6 MB in the beginning and 50.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1088.42 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 54.0 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.54 ms. Allocated memory is still 77.6 MB. Free memory was 54.0 MB in the beginning and 51.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 8]: Loop Invariant [2021-10-11 02:28:49,805 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,805 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 6]: Loop Invariant [2021-10-11 02:28:49,806 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:28:49,806 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...