./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG --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 ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG --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 ............................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:09:30,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:09:30,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:09:30,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:09:30,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:09:30,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:09:30,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:09:30,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:09:30,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:09:30,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:09:30,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:09:30,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:09:30,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:09:30,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:09:30,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:09:30,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:09:30,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:09:30,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:09:30,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:09:30,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:09:30,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:09:30,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:09:30,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:09:30,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:09:30,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:09:30,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:09:30,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:09:30,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:09:30,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:09:30,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:09:30,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:09:30,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:09:30,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:09:30,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:09:30,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:09:30,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:09:30,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:09:30,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:09:30,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:09:30,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:09:30,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:09:30,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:09:30,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:09:30,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:09:30,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:09:30,272 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:09:30,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:09:30,272 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:09:30,272 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:09:30,273 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:09:30,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:09:30,273 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:09:30,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:09:30,275 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:09:30,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:09:30,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:09:30,275 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:09:30,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:09:30,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:09:30,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:09:30,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:09:30,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:09:30,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:09:30,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:09:30,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:09:30,278 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:09:30,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:09:30,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:09:30,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:09:30,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:09:30,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:09:30,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:09:30,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:09:30,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:09:30,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:09:30,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:09:30,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:09:30,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:09:30,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:09:30,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:09:30,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:09:30,284 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-10-29 05:09:30,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:09:30,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:09:30,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:09:30,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:09:30,581 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:09:30,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-10-29 05:09:30,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/55c1158d5/76be9442b78542a08f977e55aacd78dc/FLAG800beb1d6 [2021-10-29 05:09:31,098 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:09:31,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c [2021-10-29 05:09:31,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/55c1158d5/76be9442b78542a08f977e55aacd78dc/FLAG800beb1d6 [2021-10-29 05:09:31,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/55c1158d5/76be9442b78542a08f977e55aacd78dc [2021-10-29 05:09:31,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:09:31,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:09:31,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:31,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:09:31,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:09:31,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6906c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31, skipping insertion in model container [2021-10-29 05:09:31,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:09:31,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:09:31,690 WARN L228 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-10-29 05:09:31,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:31,714 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:09:31,725 WARN L228 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-10-29 05:09:31,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:31,740 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:09:31,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31 WrapperNode [2021-10-29 05:09:31,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:31,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:31,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:09:31,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:09:31,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:31,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:09:31,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:09:31,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:09:31,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:09:31,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:09:31,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:09:31,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:09:31,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (1/1) ... [2021-10-29 05:09:31,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:09:31,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:09:31,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:09:31,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:09:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:09:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:09:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:09:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:09:32,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:09:32,065 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:09:32,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:32 BoogieIcfgContainer [2021-10-29 05:09:32,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:09:32,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:09:32,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:09:32,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:09:32,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:31" (1/3) ... [2021-10-29 05:09:32,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc2b907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:32, skipping insertion in model container [2021-10-29 05:09:32,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:31" (2/3) ... [2021-10-29 05:09:32,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc2b907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:32, skipping insertion in model container [2021-10-29 05:09:32,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:32" (3/3) ... [2021-10-29 05:09:32,078 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-10-29 05:09:32,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:09:32,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:09:32,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:09:32,156 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 [2021-10-29 05:09:32,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:09:32,183 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) [2021-10-29 05:09:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:09:32,198 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:32,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:09:32,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-29 05:09:32,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:09:32,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421910005] [2021-10-29 05:09:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:32,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:09:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:32,389 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:09:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:32,466 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:09:32,470 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:09:32,472 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:32,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:09:32,481 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:09:32,484 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:09:32,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:09:32 BoogieIcfgContainer [2021-10-29 05:09:32,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:09:32,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:09:32,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:09:32,509 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:09:32,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:32" (3/4) ... [2021-10-29 05:09:32,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:09:32,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:09:32,519 INFO L168 Benchmark]: Toolchain (without parser) took 1010.88 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 69.5 MB in the beginning and 86.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:32,520 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:32,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.10 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 69.3 MB in the beginning and 112.6 MB in the end (delta: -43.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:32,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.73 ms. Allocated memory is still 136.3 MB. Free memory was 112.6 MB in the beginning and 111.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:32,524 INFO L168 Benchmark]: Boogie Preprocessor took 18.94 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 110.4 MB in the end (delta: 831.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:32,525 INFO L168 Benchmark]: RCFGBuilder took 272.98 ms. Allocated memory is still 136.3 MB. Free memory was 109.8 MB in the beginning and 100.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:32,532 INFO L168 Benchmark]: TraceAbstraction took 434.34 ms. Allocated memory is still 136.3 MB. Free memory was 100.0 MB in the beginning and 87.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:32,533 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 136.3 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 639.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:32,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 236.10 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 69.3 MB in the beginning and 112.6 MB in the end (delta: -43.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.73 ms. Allocated memory is still 136.3 MB. Free memory was 112.6 MB in the beginning and 111.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.94 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 110.4 MB in the end (delta: 831.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 272.98 ms. Allocated memory is still 136.3 MB. Free memory was 109.8 MB in the beginning and 100.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 434.34 ms. Allocated memory is still 136.3 MB. Free memory was 100.0 MB in the beginning and 87.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.29 ms. Allocated memory is still 136.3 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 639.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: No data available, 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 [2021-10-29 05:09:32,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:09:34,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:09:34,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:09:35,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:09:35,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:09:35,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:09:35,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:09:35,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:09:35,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:09:35,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:09:35,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:09:35,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:09:35,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:09:35,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:09:35,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:09:35,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:09:35,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:09:35,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:09:35,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:09:35,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:09:35,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:09:35,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:09:35,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:09:35,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:09:35,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:09:35,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:09:35,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:09:35,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:09:35,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:09:35,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:09:35,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:09:35,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:09:35,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:09:35,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:09:35,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:09:35,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:09:35,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:09:35,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:09:35,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:09:35,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:09:35,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:09:35,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:09:35,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:09:35,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:09:35,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:09:35,150 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:09:35,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:09:35,150 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:09:35,150 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:09:35,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:09:35,150 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:09:35,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:09:35,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:09:35,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:09:35,153 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:09:35,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:09:35,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:09:35,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:09:35,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:09:35,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:09:35,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:09:35,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:09:35,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:09:35,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:09:35,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:09:35,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:09:35,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:09:35,155 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:09:35,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:09:35,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:09:35,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:09:35,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:09:35,156 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-10-29 05:09:35,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:09:35,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:09:35,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:09:35,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:09:35,617 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:09:35,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-10-29 05:09:35,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/588d95adb/53e5ce3547ec40268f3a1d970cc974cf/FLAG700c26368 [2021-10-29 05:09:36,240 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:09:36,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c [2021-10-29 05:09:36,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/588d95adb/53e5ce3547ec40268f3a1d970cc974cf/FLAG700c26368 [2021-10-29 05:09:36,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/data/588d95adb/53e5ce3547ec40268f3a1d970cc974cf [2021-10-29 05:09:36,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:09:36,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:09:36,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:36,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:09:36,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:09:36,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddcd56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36, skipping insertion in model container [2021-10-29 05:09:36,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:09:36,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:09:36,812 WARN L228 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-10-29 05:09:36,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:36,849 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:09:36,862 WARN L228 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_548a3ae7-6465-4e44-ae48-fe7dd3103336/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-10-29 05:09:36,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:09:36,883 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:09:36,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36 WrapperNode [2021-10-29 05:09:36,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:09:36,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:36,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:09:36,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:09:36,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:09:36,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:09:36,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:09:36,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:09:36,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:09:36,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:09:36,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:09:36,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:09:36,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (1/1) ... [2021-10-29 05:09:36,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:09:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:09:37,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:09:37,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:09:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:09:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:09:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:09:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:09:37,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:09:37,230 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:09:37,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:37 BoogieIcfgContainer [2021-10-29 05:09:37,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:09:37,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:09:37,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:09:37,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:09:37,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:36" (1/3) ... [2021-10-29 05:09:37,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687da7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:37, skipping insertion in model container [2021-10-29 05:09:37,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:36" (2/3) ... [2021-10-29 05:09:37,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687da7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:37, skipping insertion in model container [2021-10-29 05:09:37,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:37" (3/3) ... [2021-10-29 05:09:37,240 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-10-29 05:09:37,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:09:37,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:09:37,291 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:09:37,298 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 [2021-10-29 05:09:37,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:09:37,311 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) [2021-10-29 05:09:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:09:37,316 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:37,316 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:09:37,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-29 05:09:37,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:09:37,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616170346] [2021-10-29 05:09:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:37,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:09:37,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:09:37,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:09:37,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:09:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:37,453 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:09:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:37,511 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:09:37,513 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:09:37,514 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:37,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:09:37,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:09:37,729 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:09:37,731 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:09:37,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:09:37 BoogieIcfgContainer [2021-10-29 05:09:37,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:09:37,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:09:37,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:09:37,752 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:09:37,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:37" (3/4) ... [2021-10-29 05:09:37,754 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:09:37,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:09:37,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:09:37,840 INFO L168 Benchmark]: Toolchain (without parser) took 1227.97 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 50.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,840 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:37,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 39.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 69.2 MB. Free memory was 39.2 MB in the beginning and 52.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,842 INFO L168 Benchmark]: Boogie Preprocessor took 43.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.6 MB in the end (delta: 970.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,843 INFO L168 Benchmark]: RCFGBuilder took 259.95 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 42.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,844 INFO L168 Benchmark]: TraceAbstraction took 516.21 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 31.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,844 INFO L168 Benchmark]: Witness Printer took 86.77 ms. Allocated memory is still 69.2 MB. Free memory was 31.1 MB in the beginning and 50.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:37,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.17 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 39.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 69.2 MB. Free memory was 39.2 MB in the beginning and 52.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.6 MB in the end (delta: 970.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 259.95 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 42.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 516.21 ms. Allocated memory is still 69.2 MB. Free memory was 42.3 MB in the beginning and 31.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 86.77 ms. Allocated memory is still 69.2 MB. Free memory was 31.1 MB in the beginning and 50.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * 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() [L8] COND TRUE !(cond) [L8] reach_error() - 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: No data available, 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! [2021-10-29 05:09:37,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_548a3ae7-6465-4e44-ae48-fe7dd3103336/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...