./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P --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 a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:48:09,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:48:09,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:48:09,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:48:09,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:48:09,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:48:09,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:48:09,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:48:09,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:48:09,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:48:09,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:48:09,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:48:09,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:48:09,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:48:09,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:48:09,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:48:09,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:48:09,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:48:09,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:48:09,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:48:09,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:48:09,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:48:09,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:48:09,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:48:09,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:48:09,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:48:09,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:48:09,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:48:09,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:48:09,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:48:09,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:48:09,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:48:09,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:48:09,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:48:09,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:48:09,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:48:09,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:48:09,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:48:09,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:48:09,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:48:09,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:48:09,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:48:10,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:48:10,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:48:10,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:48:10,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:48:10,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:48:10,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:48:10,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:48:10,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:48:10,019 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:48:10,019 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:48:10,021 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:48:10,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:48:10,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:48:10,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:48:10,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:48:10,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:48:10,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:48:10,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:48:10,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:48:10,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:48:10,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:48:10,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:48:10,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:48:10,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:48:10,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:48:10,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:48:10,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:48:10,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:48:10,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:48:10,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:48:10,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:48:10,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:48:10,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:10,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:48:10,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:48:10,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:48:10,029 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:48:10,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:48:10,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:48:10,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:48:10,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:48:10,030 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-21 01:48:10,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:48:10,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:48:10,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:48:10,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:48:10,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:48:10,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-21 01:48:10,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/900fdee0d/a5fd5f7a971042f38c71a73a1282b9f1/FLAG5b0efcfc0 [2021-11-21 01:48:10,842 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:48:10,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-21 01:48:10,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/900fdee0d/a5fd5f7a971042f38c71a73a1282b9f1/FLAG5b0efcfc0 [2021-11-21 01:48:11,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/900fdee0d/a5fd5f7a971042f38c71a73a1282b9f1 [2021-11-21 01:48:11,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:48:11,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:48:11,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:11,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:48:11,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:48:11,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d4ab6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11, skipping insertion in model container [2021-11-21 01:48:11,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:48:11,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:48:11,401 WARN L230 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-21 01:48:11,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:11,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:48:11,456 WARN L230 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-21 01:48:11,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:11,471 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:48:11,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11 WrapperNode [2021-11-21 01:48:11,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:11,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:11,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:48:11,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:48:11,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,505 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-21 01:48:11,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:11,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:48:11,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:48:11,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:48:11,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:48:11,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:48:11,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:48:11,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:48:11,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (1/1) ... [2021-11-21 01:48:11,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:11,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:11,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:48:11,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:48:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:48:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:48:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:48:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:48:11,683 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:48:11,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:48:11,785 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:48:11,805 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:48:11,805 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:48:11,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:11 BoogieIcfgContainer [2021-11-21 01:48:11,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:48:11,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:48:11,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:48:11,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:48:11,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:48:11" (1/3) ... [2021-11-21 01:48:11,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46654cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:11, skipping insertion in model container [2021-11-21 01:48:11,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:11" (2/3) ... [2021-11-21 01:48:11,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46654cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:11, skipping insertion in model container [2021-11-21 01:48:11,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:11" (3/3) ... [2021-11-21 01:48:11,820 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-21 01:48:11,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:48:11,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:48:11,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:48:11,888 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:48:11,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:48:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:48:11,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:11,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:48:11,909 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-21 01:48:11,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:11,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645436714] [2021-11-21 01:48:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:11,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:48:12,016 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:48:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:48:12,044 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:48:12,046 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:48:12,047 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:48:12,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:48:12,054 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:48:12,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:48:12,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:48:12 BoogieIcfgContainer [2021-11-21 01:48:12,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:48:12,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:48:12,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:48:12,075 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:48:12,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:11" (3/4) ... [2021-11-21 01:48:12,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:48:12,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:48:12,080 INFO L158 Benchmark]: Toolchain (without parser) took 854.86ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 60.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-21 01:48:12,081 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:12,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.52ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 84.1MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:48:12,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.71ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 82.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:12,083 INFO L158 Benchmark]: Boogie Preprocessor took 18.51ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 862.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:48:12,084 INFO L158 Benchmark]: RCFGBuilder took 283.15ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 73.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:48:12,085 INFO L158 Benchmark]: TraceAbstraction took 263.97ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 60.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:48:12,085 INFO L158 Benchmark]: Witness Printer took 4.41ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.2MB in the end (delta: 444.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:12,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.52ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 84.1MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.71ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 82.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.51ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 862.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.15ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 73.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 263.97ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 60.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.41ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 60.2MB in the end (delta: 444.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: 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 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 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 [2021-11-21 01:48:12,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P --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 a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:48:14,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:48:14,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:48:14,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:48:14,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:48:14,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:48:14,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:48:14,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:48:14,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:48:14,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:48:14,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:48:14,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:48:14,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:48:14,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:48:14,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:48:14,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:48:14,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:48:14,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:48:14,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:48:14,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:48:14,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:48:14,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:48:14,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:48:14,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:48:14,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:48:14,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:48:14,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:48:14,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:48:14,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:48:14,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:48:14,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:48:14,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:48:14,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:48:14,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:48:14,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:48:14,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:48:14,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:48:14,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:48:14,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:48:14,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:48:14,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:48:14,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:48:14,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:48:14,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:48:14,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:48:14,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:48:14,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:48:14,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:48:14,636 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:48:14,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:48:14,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:48:14,637 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:48:14,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:48:14,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:48:14,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:48:14,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:48:14,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:48:14,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:48:14,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:48:14,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:48:14,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:48:14,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:48:14,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:48:14,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:48:14,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:48:14,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:48:14,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:48:14,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:48:14,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:48:14,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:48:14,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:14,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:48:14,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:48:14,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:48:14,644 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:48:14,645 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:48:14,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:48:14,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:48:14,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:48:14,646 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-21 01:48:15,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:48:15,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:48:15,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:48:15,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:48:15,076 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:48:15,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-21 01:48:15,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/21531e18c/533404339eb24f5bb0637035cc82bf1b/FLAG774ee6787 [2021-11-21 01:48:15,670 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:48:15,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-21 01:48:15,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/21531e18c/533404339eb24f5bb0637035cc82bf1b/FLAG774ee6787 [2021-11-21 01:48:16,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/data/21531e18c/533404339eb24f5bb0637035cc82bf1b [2021-11-21 01:48:16,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:48:16,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:48:16,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:16,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:48:16,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:48:16,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6d27ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16, skipping insertion in model container [2021-11-21 01:48:16,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:48:16,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:48:16,232 WARN L230 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-21 01:48:16,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:16,257 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:48:16,276 WARN L230 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_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-21 01:48:16,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:48:16,307 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:48:16,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16 WrapperNode [2021-11-21 01:48:16,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:48:16,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:16,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:48:16,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:48:16,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,344 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2021-11-21 01:48:16,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:48:16,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:48:16,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:48:16,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:48:16,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:48:16,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:48:16,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:48:16,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:48:16,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (1/1) ... [2021-11-21 01:48:16,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:48:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:16,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:48:16,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:48:16,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:48:16,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:48:16,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:48:16,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:48:16,583 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:48:16,584 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:48:16,679 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:48:16,685 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:48:16,686 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:48:16,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:16 BoogieIcfgContainer [2021-11-21 01:48:16,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:48:16,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:48:16,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:48:16,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:48:16,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:48:16" (1/3) ... [2021-11-21 01:48:16,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407bacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:16, skipping insertion in model container [2021-11-21 01:48:16,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:16" (2/3) ... [2021-11-21 01:48:16,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407bacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:16, skipping insertion in model container [2021-11-21 01:48:16,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:16" (3/3) ... [2021-11-21 01:48:16,698 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-21 01:48:16,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:48:16,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:48:16,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:48:16,780 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:48:16,780 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:48:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:48:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:48:16,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:16,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:48:16,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:16,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-21 01:48:16,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:48:16,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78226231] [2021-11-21 01:48:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:16,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:48:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:48:16,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:48:16,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:48:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:48:16,925 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:48:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:48:16,999 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:48:17,001 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:48:17,003 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:48:17,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:48:17,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:48:17,210 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:48:17,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:48:17,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:48:17 BoogieIcfgContainer [2021-11-21 01:48:17,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:48:17,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:48:17,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:48:17,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:48:17,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:16" (3/4) ... [2021-11-21 01:48:17,241 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:48:17,288 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:48:17,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:48:17,290 INFO L158 Benchmark]: Toolchain (without parser) took 1235.54ms. Allocated memory is still 71.3MB. Free memory was 50.0MB in the beginning and 32.7MB in the end (delta: 17.2MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-11-21 01:48:17,291 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.1MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:17,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.70ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 55.7MB in the end (delta: -5.9MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-21 01:48:17,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.23ms. Allocated memory is still 71.3MB. Free memory was 55.7MB in the beginning and 54.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:17,294 INFO L158 Benchmark]: Boogie Preprocessor took 49.04ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 53.4MB in the end (delta: 846.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:48:17,298 INFO L158 Benchmark]: RCFGBuilder took 279.45ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 45.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:48:17,299 INFO L158 Benchmark]: TraceAbstraction took 542.84ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 34.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:48:17,299 INFO L158 Benchmark]: Witness Printer took 51.47ms. Allocated memory is still 71.3MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:48:17,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.1MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.70ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 55.7MB in the end (delta: -5.9MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.23ms. Allocated memory is still 71.3MB. Free memory was 55.7MB in the beginning and 54.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.04ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 53.4MB in the end (delta: 846.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 279.45ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 45.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 542.84ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 34.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 51.47ms. Allocated memory is still 71.3MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:48:17,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a7c6be-b66f-4c7c-927d-ea1c87c4b7ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE