./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7 --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 eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:20:56,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:20:56,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:20:56,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:20:56,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:20:56,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:20:56,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:20:56,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:20:56,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:20:56,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:20:56,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:20:56,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:20:56,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:20:56,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:20:56,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:20:56,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:20:56,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:20:56,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:20:56,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:20:56,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:20:56,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:20:57,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:20:57,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:20:57,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:20:57,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:20:57,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:20:57,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:20:57,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:20:57,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:20:57,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:20:57,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:20:57,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:20:57,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:20:57,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:20:57,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:20:57,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:20:57,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:20:57,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:20:57,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:20:57,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:20:57,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:20:57,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:20:57,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:20:57,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:20:57,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:20:57,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:20:57,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:20:57,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:20:57,082 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:20:57,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:20:57,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:20:57,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:20:57,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:20:57,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:20:57,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:20:57,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:20:57,085 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:20:57,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:20:57,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:20:57,085 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:20:57,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:20:57,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:20:57,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:20:57,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:20:57,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:20:57,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:20:57,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:20:57,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:20:57,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:20:57,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:20:57,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:20:57,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:20:57,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:20:57,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:20:57,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:20:57,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:20:57,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:20:57,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:20:57,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:20:57,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:20:57,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:20:57,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:20:57,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:20:57,094 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-11-25 19:20:57,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:20:57,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:20:57,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:20:57,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:20:57,414 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:20:57,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-11-25 19:20:57,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/880066e73/31e30c2246904e2a9c151d4cdaa4a8ae/FLAG2c4a258a3 [2021-11-25 19:20:58,040 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:20:58,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c [2021-11-25 19:20:58,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/880066e73/31e30c2246904e2a9c151d4cdaa4a8ae/FLAG2c4a258a3 [2021-11-25 19:20:58,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/880066e73/31e30c2246904e2a9c151d4cdaa4a8ae [2021-11-25 19:20:58,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:20:58,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:20:58,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:20:58,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:20:58,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:20:58,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6d040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58, skipping insertion in model container [2021-11-25 19:20:58,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:20:58,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:20:58,636 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-25 19:20:58,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:20:58,665 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:20:58,679 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-25 19:20:58,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:20:58,694 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:20:58,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58 WrapperNode [2021-11-25 19:20:58,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:20:58,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:20:58,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:20:58,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:20:58,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,730 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-25 19:20:58,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:20:58,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:20:58,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:20:58,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:20:58,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:20:58,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:20:58,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:20:58,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:20:58,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (1/1) ... [2021-11-25 19:20:58,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:20:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:58,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:20:58,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:20:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:20:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:20:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:20:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:20:58,898 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:20:58,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:20:59,005 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:20:59,028 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:20:59,029 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:20:59,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:20:59 BoogieIcfgContainer [2021-11-25 19:20:59,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:20:59,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:20:59,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:20:59,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:20:59,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:20:58" (1/3) ... [2021-11-25 19:20:59,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4be7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:20:59, skipping insertion in model container [2021-11-25 19:20:59,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:58" (2/3) ... [2021-11-25 19:20:59,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4be7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:20:59, skipping insertion in model container [2021-11-25 19:20:59,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:20:59" (3/3) ... [2021-11-25 19:20:59,041 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-11-25 19:20:59,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:20:59,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:20:59,108 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:20:59,118 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 [2021-11-25 19:20:59,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:20:59,139 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) [2021-11-25 19:20:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 19:20:59,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:59,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 19:20:59,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:20:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-25 19:20:59,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:59,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45341653] [2021-11-25 19:20:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:59,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:20:59,279 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:20:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:20:59,325 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:20:59,327 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:20:59,329 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:20:59,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:20:59,337 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:20:59,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:20:59,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:20:59 BoogieIcfgContainer [2021-11-25 19:20:59,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:20:59,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:20:59,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:20:59,370 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:20:59,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:20:59" (3/4) ... [2021-11-25 19:20:59,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:20:59,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:20:59,376 INFO L158 Benchmark]: Toolchain (without parser) took 943.04ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 57.8MB in the end (delta: 6.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-11-25 19:20:59,377 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:20:59,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.08ms. Allocated memory is still 107.0MB. Free memory was 64.3MB in the beginning and 81.4MB in the end (delta: -17.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:20:59,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.65ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:20:59,380 INFO L158 Benchmark]: Boogie Preprocessor took 29.27ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 79.2MB in the end (delta: 812.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:20:59,385 INFO L158 Benchmark]: RCFGBuilder took 265.32ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 70.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:20:59,386 INFO L158 Benchmark]: TraceAbstraction took 333.83ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 57.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:20:59,388 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 107.0MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 154.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:20:59,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.08ms. Allocated memory is still 107.0MB. Free memory was 64.3MB in the beginning and 81.4MB in the end (delta: -17.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.65ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.27ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 79.2MB in the end (delta: 812.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.32ms. Allocated memory is still 107.0MB. Free memory was 79.2MB in the beginning and 70.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 333.83ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 57.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 107.0MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 154.9kB). 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 someBinaryFLOATComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [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 [2021-11-25 19:20:59,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/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_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7 --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 eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:21:01,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:21:01,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:21:02,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:21:02,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:21:02,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:21:02,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:21:02,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:21:02,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:21:02,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:21:02,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:21:02,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:21:02,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:21:02,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:21:02,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:21:02,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:21:02,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:21:02,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:21:02,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:21:02,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:21:02,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:21:02,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:21:02,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:21:02,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:21:02,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:21:02,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:21:02,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:21:02,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:21:02,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:21:02,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:21:02,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:21:02,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:21:02,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:21:02,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:21:02,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:21:02,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:21:02,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:21:02,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:21:02,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:21:02,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:21:02,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:21:02,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:21:02,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:21:02,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:21:02,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:21:02,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:21:02,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:21:02,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:21:02,183 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:21:02,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:21:02,184 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:21:02,184 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:21:02,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:21:02,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:21:02,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:21:02,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:21:02,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:21:02,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:21:02,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:21:02,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:21:02,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:21:02,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:21:02,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:21:02,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:21:02,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:21:02,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:21:02,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:21:02,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:21:02,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:21:02,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:21:02,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:21:02,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:21:02,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:21:02,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:21:02,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:21:02,190 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:21:02,190 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:21:02,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:21:02,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:21:02,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:21:02,191 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-11-25 19:21:02,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:21:02,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:21:02,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:21:02,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:21:02,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:21:02,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-11-25 19:21:02,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/697cf502f/9de4b269f95748498452814b474e9b85/FLAG4398e73cd [2021-11-25 19:21:03,247 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:21:03,248 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c [2021-11-25 19:21:03,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/697cf502f/9de4b269f95748498452814b474e9b85/FLAG4398e73cd [2021-11-25 19:21:03,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/data/697cf502f/9de4b269f95748498452814b474e9b85 [2021-11-25 19:21:03,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:21:03,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:21:03,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:21:03,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:21:03,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:21:03,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4756d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03, skipping insertion in model container [2021-11-25 19:21:03,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:21:03,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:21:03,838 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-25 19:21:03,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:21:03,859 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:21:03,908 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_cc7b1db4-e311-4df1-ac76-48189ce044ba/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-25 19:21:03,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:21:03,928 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:21:03,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03 WrapperNode [2021-11-25 19:21:03,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:21:03,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:21:03,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:21:03,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:21:03,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,968 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2021-11-25 19:21:03,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:21:03,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:21:03,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:21:03,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:21:03,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:21:03,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:21:03,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:21:03,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:21:03,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (1/1) ... [2021-11-25 19:21:03,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:21:04,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:21:04,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:21:04,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:21:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:21:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:21:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:21:04,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:21:04,125 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:21:04,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:21:04,212 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:21:04,218 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:21:04,218 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:21:04,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:21:04 BoogieIcfgContainer [2021-11-25 19:21:04,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:21:04,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:21:04,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:21:04,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:21:04,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:21:03" (1/3) ... [2021-11-25 19:21:04,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7209d046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:21:04, skipping insertion in model container [2021-11-25 19:21:04,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:21:03" (2/3) ... [2021-11-25 19:21:04,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7209d046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:21:04, skipping insertion in model container [2021-11-25 19:21:04,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:21:04" (3/3) ... [2021-11-25 19:21:04,228 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-11-25 19:21:04,233 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:21:04,233 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:21:04,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:21:04,288 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 [2021-11-25 19:21:04,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:21:04,301 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) [2021-11-25 19:21:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:21:04,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:04,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:21:04,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:21:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-25 19:21:04,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:21:04,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655728439] [2021-11-25 19:21:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:04,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:21:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:21:04,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:21:04,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:21:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:21:04,408 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:21:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:21:04,455 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 19:21:04,456 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:21:04,457 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:21:04,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 19:21:04,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:21:04,674 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:21:04,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:21:04,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:21:04 BoogieIcfgContainer [2021-11-25 19:21:04,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:21:04,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:21:04,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:21:04,707 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:21:04,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:21:04" (3/4) ... [2021-11-25 19:21:04,710 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:21:04,754 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:21:04,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:21:04,757 INFO L158 Benchmark]: Toolchain (without parser) took 1073.34ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 38.3MB in the beginning and 61.0MB in the end (delta: -22.7MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-11-25 19:21:04,757 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:04,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.11ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 43.9MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:21:04,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.49ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:04,762 INFO L158 Benchmark]: Boogie Preprocessor took 20.09ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 41.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:04,765 INFO L158 Benchmark]: RCFGBuilder took 229.93ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 33.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:21:04,766 INFO L158 Benchmark]: TraceAbstraction took 477.95ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 33.2MB in the beginning and 62.9MB in the end (delta: -29.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:21:04,766 INFO L158 Benchmark]: Witness Printer took 48.99ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 61.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:21:04,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.11ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 43.9MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.49ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.09ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 41.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 229.93ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 33.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 477.95ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 33.2MB in the beginning and 62.9MB in the end (delta: -29.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.99ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 61.0MB in the end (delta: 1.5MB). 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] float x; [L13] x = __VERIFIER_nondet_float() [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! [2021-11-25 19:21:04,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7b1db4-e311-4df1-ac76-48189ce044ba/bin/utaipan-eEHZpOm5b7/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