./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:54:23,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:54:23,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:54:23,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:54:23,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:54:23,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:54:23,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:54:23,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:54:23,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:54:23,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:54:23,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:54:23,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:54:23,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:54:23,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:54:23,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:54:23,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:54:23,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:54:23,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:54:23,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:54:23,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:54:23,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:54:23,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:54:23,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:54:23,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:54:23,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:54:23,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:54:23,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:54:23,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:54:23,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:54:23,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:54:23,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:54:23,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:54:23,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:54:23,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:54:23,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:54:23,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:54:23,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:54:23,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:54:23,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:54:23,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:54:23,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:54:23,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:54:23,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:54:23,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:54:23,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:54:23,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:54:23,265 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:54:23,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:54:23,266 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:54:23,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:54:23,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:54:23,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:54:23,267 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:54:23,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:54:23,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:54:23,268 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:54:23,268 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:54:23,268 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:54:23,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:54:23,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:54:23,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:54:23,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:54:23,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:54:23,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:54:23,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:54:23,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:54:23,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:54:23,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:54:23,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:54:23,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:54:23,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:54:23,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:54:23,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:54:23,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:54:23,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:54:23,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:54:23,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:54:23,273 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:54:23,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:54:23,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:54:23,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:54:23,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:54:23,274 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-12 22:54:23,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:54:23,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:54:23,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:54:23,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:54:23,608 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:54:23,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-12 22:54:23,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/4139dc96c/88c46c6efdc640b8b2201dad21ba1148/FLAG7f9a653cb [2021-11-12 22:54:24,141 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:54:24,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-12 22:54:24,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/4139dc96c/88c46c6efdc640b8b2201dad21ba1148/FLAG7f9a653cb [2021-11-12 22:54:24,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/4139dc96c/88c46c6efdc640b8b2201dad21ba1148 [2021-11-12 22:54:24,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:54:24,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:54:24,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:54:24,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:54:24,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:54:24,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53786ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24, skipping insertion in model container [2021-11-12 22:54:24,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:54:24,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:54:24,756 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-12 22:54:24,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:54:24,776 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:54:24,787 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-12 22:54:24,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:54:24,802 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:54:24,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24 WrapperNode [2021-11-12 22:54:24,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:54:24,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:54:24,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:54:24,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:54:24,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:54:24,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:54:24,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:54:24,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:54:24,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:54:24,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:54:24,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:54:24,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:54:24,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (1/1) ... [2021-11-12 22:54:24,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:54:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:54:24,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:54:24,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:54:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:54:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:54:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:54:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:54:25,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:54:25,146 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:54:25,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:25 BoogieIcfgContainer [2021-11-12 22:54:25,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:54:25,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:54:25,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:54:25,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:54:25,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:54:24" (1/3) ... [2021-11-12 22:54:25,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeacafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:54:25, skipping insertion in model container [2021-11-12 22:54:25,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:24" (2/3) ... [2021-11-12 22:54:25,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeacafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:54:25, skipping insertion in model container [2021-11-12 22:54:25,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:25" (3/3) ... [2021-11-12 22:54:25,157 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-12 22:54:25,161 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:54:25,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:54:25,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:54:25,216 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 [2021-11-12 22:54:25,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:54:25,230 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) [2021-11-12 22:54:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:54:25,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:25,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:54:25,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-12 22:54:25,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:54:25,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291845862] [2021-11-12 22:54:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:25,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:54:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:54:25,350 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:54:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:54:25,384 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:54:25,386 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:54:25,387 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:54:25,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:54:25,394 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:54:25,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:54:25,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:54:25 BoogieIcfgContainer [2021-11-12 22:54:25,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:54:25,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:54:25,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:54:25,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:54:25,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:25" (3/4) ... [2021-11-12 22:54:25,420 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:54:25,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:54:25,422 INFO L158 Benchmark]: Toolchain (without parser) took 882.01ms. Allocated memory is still 94.4MB. Free memory was 53.5MB in the beginning and 45.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-12 22:54:25,423 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 49.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:54:25,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.96ms. Allocated memory is still 94.4MB. Free memory was 53.3MB in the beginning and 70.9MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:54:25,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.16ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:54:25,425 INFO L158 Benchmark]: Boogie Preprocessor took 31.95ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 68.5MB in the end (delta: 721.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:54:25,425 INFO L158 Benchmark]: RCFGBuilder took 266.01ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 59.4MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:54:25,426 INFO L158 Benchmark]: TraceAbstraction took 265.48ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 45.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:54:25,427 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 94.4MB. Free memory was 45.8MB in the beginning and 45.5MB in the end (delta: 268.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:54:25,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 49.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.96ms. Allocated memory is still 94.4MB. Free memory was 53.3MB in the beginning and 70.9MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.16ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.95ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 68.5MB in the end (delta: 721.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.01ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 59.4MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 265.48ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 45.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 94.4MB. Free memory was 45.8MB in the beginning and 45.5MB in the end (delta: 268.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:54:25,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:54:27,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:54:27,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:54:27,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:54:27,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:54:27,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:54:27,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:54:27,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:54:27,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:54:27,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:54:27,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:54:27,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:54:27,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:54:27,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:54:27,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:54:27,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:54:27,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:54:27,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:54:27,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:54:27,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:54:27,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:54:27,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:54:27,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:54:27,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:54:27,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:54:27,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:54:27,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:54:27,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:54:27,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:54:27,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:54:27,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:54:27,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:54:27,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:54:27,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:54:27,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:54:27,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:54:27,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:54:27,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:54:27,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:54:27,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:54:27,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:54:27,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:54:27,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:54:27,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:54:27,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:54:27,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:54:27,987 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:54:27,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:54:27,987 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:54:27,987 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:54:27,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:54:27,988 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:54:27,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:54:27,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:54:27,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:54:27,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:54:27,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:54:27,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:54:27,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:54:27,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:54:27,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:54:27,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:54:27,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:54:27,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:54:27,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:54:27,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:54:27,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:54:27,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:54:27,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:54:27,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:54:27,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:54:27,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:54:27,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:54:27,995 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:54:27,995 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:54:27,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:54:27,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:54:27,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:54:27,996 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-12 22:54:28,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:54:28,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:54:28,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:54:28,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:54:28,430 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:54:28,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-12 22:54:28,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/6fff83b93/db411f9b94824c24a897a31c65526485/FLAG4bccd67ed [2021-11-12 22:54:29,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:54:29,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-12 22:54:29,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/6fff83b93/db411f9b94824c24a897a31c65526485/FLAG4bccd67ed [2021-11-12 22:54:29,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/data/6fff83b93/db411f9b94824c24a897a31c65526485 [2021-11-12 22:54:29,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:54:29,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:54:29,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:54:29,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:54:29,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:54:29,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780f96c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29, skipping insertion in model container [2021-11-12 22:54:29,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:54:29,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:54:29,579 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-12 22:54:29,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:54:29,599 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:54:29,611 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_6b0d324c-81b3-4c50-855f-deeb156bfbfe/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-12 22:54:29,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:54:29,627 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:54:29,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29 WrapperNode [2021-11-12 22:54:29,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:54:29,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:54:29,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:54:29,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:54:29,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:54:29,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:54:29,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:54:29,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:54:29,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:54:29,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:54:29,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:54:29,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:54:29,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (1/1) ... [2021-11-12 22:54:29,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:54:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:54:29,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:54:29,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:54:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:54:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:54:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:54:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:54:29,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:54:29,981 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:54:29,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:29 BoogieIcfgContainer [2021-11-12 22:54:29,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:54:29,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:54:29,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:54:29,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:54:29,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:54:29" (1/3) ... [2021-11-12 22:54:29,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432f79d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:54:29, skipping insertion in model container [2021-11-12 22:54:29,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:54:29" (2/3) ... [2021-11-12 22:54:29,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432f79d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:54:29, skipping insertion in model container [2021-11-12 22:54:29,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:29" (3/3) ... [2021-11-12 22:54:29,990 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-12 22:54:29,995 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:54:29,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:54:30,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:54:30,049 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 [2021-11-12 22:54:30,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:54:30,061 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) [2021-11-12 22:54:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:54:30,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:30,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:54:30,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-12 22:54:30,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:54:30,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745350626] [2021-11-12 22:54:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:30,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:54:30,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:54:30,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:54:30,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:54:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:54:30,217 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:54:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:54:30,295 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:54:30,297 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:54:30,298 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:54:30,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:30,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:54:30,519 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:54:30,523 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:54:30,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:54:30 BoogieIcfgContainer [2021-11-12 22:54:30,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:54:30,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:54:30,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:54:30,555 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:54:30,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:54:29" (3/4) ... [2021-11-12 22:54:30,558 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 22:54:30,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:54:30,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:54:30,607 INFO L158 Benchmark]: Toolchain (without parser) took 1185.43ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 44.2MB in the beginning and 56.2MB in the end (delta: -12.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,608 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:54:30,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.43ms. Allocated memory is still 65.0MB. Free memory was 44.0MB in the beginning and 34.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.64ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 48.2MB in the end (delta: -13.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,613 INFO L158 Benchmark]: Boogie Preprocessor took 54.75ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 47.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,617 INFO L158 Benchmark]: RCFGBuilder took 250.00ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 38.2MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,618 INFO L158 Benchmark]: TraceAbstraction took 566.15ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 58.1MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:54:30,619 INFO L158 Benchmark]: Witness Printer took 50.56ms. Allocated memory is still 79.7MB. Free memory was 58.1MB in the beginning and 56.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:54:30,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.43ms. Allocated memory is still 65.0MB. Free memory was 44.0MB in the beginning and 34.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.64ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 48.2MB in the end (delta: -13.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.75ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 47.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.00ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 38.2MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 566.15ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 58.1MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.56ms. Allocated memory is still 79.7MB. Free memory was 58.1MB in the beginning and 56.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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! [2021-11-12 22:54:30,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b0d324c-81b3-4c50-855f-deeb156bfbfe/bin/utaipan-vmNK8stdcF/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