./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V --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-aef121e [2021-11-23 02:19:24,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:19:24,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:19:24,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:19:24,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:19:24,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:19:24,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:19:24,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:19:24,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:19:24,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:19:24,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:19:24,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:19:24,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:19:24,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:19:24,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:19:24,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:19:24,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:19:24,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:19:24,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:19:24,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:19:24,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:19:24,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:19:24,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:19:24,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:19:24,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:19:24,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:19:24,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:19:24,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:19:24,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:19:24,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:19:24,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:19:24,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:19:24,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:19:24,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:19:24,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:19:24,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:19:24,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:19:24,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:19:24,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:19:24,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:19:24,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:19:24,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:19:24,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:19:24,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:19:24,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:19:24,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:19:24,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:19:24,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:19:24,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:19:24,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:19:24,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:19:24,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:19:24,340 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:19:24,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:19:24,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:19:24,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:19:24,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:19:24,342 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:19:24,342 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:19:24,343 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:19:24,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:19:24,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:19:24,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:19:24,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:19:24,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:19:24,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:19:24,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:19:24,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:19:24,346 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:19:24,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:19:24,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:19:24,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:19:24,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:19:24,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:19:24,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:24,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:19:24,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:19:24,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:19:24,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:19:24,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:19:24,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:19:24,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:19:24,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:19:24,352 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_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-23 02:19:24,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:19:24,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:19:24,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:19:24,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:19:24,848 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:19:24,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-23 02:19:24,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/ba9090ef6/39d4b9399bed4a26bea9cd62fef81970/FLAG89630846c [2021-11-23 02:19:25,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:19:25,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-23 02:19:25,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/ba9090ef6/39d4b9399bed4a26bea9cd62fef81970/FLAG89630846c [2021-11-23 02:19:25,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/ba9090ef6/39d4b9399bed4a26bea9cd62fef81970 [2021-11-23 02:19:25,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:19:25,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:19:25,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:25,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:19:26,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:19:26,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:25" (1/1) ... [2021-11-23 02:19:26,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf402b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26, skipping insertion in model container [2021-11-23 02:19:26,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:25" (1/1) ... [2021-11-23 02:19:26,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:19:26,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:19:26,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-23 02:19:26,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:26,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:19:26,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-23 02:19:26,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:26,328 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:19:26,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26 WrapperNode [2021-11-23 02:19:26,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:26,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:26,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:19:26,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:19:26,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,379 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-23 02:19:26,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:26,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:19:26,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:19:26,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:19:26,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:19:26,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:19:26,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:19:26,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:19:26,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (1/1) ... [2021-11-23 02:19:26,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:26,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:26,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:19:26,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:19:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:19:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:19:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:19:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:19:26,621 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:19:26,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:19:26,761 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:19:26,790 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:19:26,790 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:19:26,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:26 BoogieIcfgContainer [2021-11-23 02:19:26,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:19:26,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:19:26,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:19:26,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:19:26,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:25" (1/3) ... [2021-11-23 02:19:26,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b76a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:26, skipping insertion in model container [2021-11-23 02:19:26,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:26" (2/3) ... [2021-11-23 02:19:26,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b76a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:26, skipping insertion in model container [2021-11-23 02:19:26,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:26" (3/3) ... [2021-11-23 02:19:26,809 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-23 02:19:26,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:19:26,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:19:26,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:19:26,904 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 [2021-11-23 02:19:26,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:19:26,922 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) [2021-11-23 02:19:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:19:26,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:26,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:19:26,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-23 02:19:26,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:26,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218685701] [2021-11-23 02:19:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:26,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:27,090 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:19:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:27,148 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:19:27,151 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:19:27,153 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:19:27,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:19:27,163 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:19:27,169 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:19:27,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:19:27 BoogieIcfgContainer [2021-11-23 02:19:27,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:19:27,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:19:27,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:19:27,205 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:19:27,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:26" (3/4) ... [2021-11-23 02:19:27,210 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:19:27,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:19:27,213 INFO L158 Benchmark]: Toolchain (without parser) took 1215.62ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 67.5MB in the beginning and 80.0MB in the end (delta: -12.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-11-23 02:19:27,213 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:27,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.56ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 67.3MB in the beginning and 103.9MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:19:27,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.16ms. Allocated memory is still 127.9MB. Free memory was 103.9MB in the beginning and 102.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:19:27,224 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 127.9MB. Free memory was 102.3MB in the beginning and 101.7MB in the end (delta: 627.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:27,225 INFO L158 Benchmark]: RCFGBuilder took 375.32ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 92.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:19:27,227 INFO L158 Benchmark]: TraceAbstraction took 402.21ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 80.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:19:27,228 INFO L158 Benchmark]: Witness Printer took 6.03ms. Allocated memory is still 127.9MB. Free memory was 80.2MB in the beginning and 80.0MB in the end (delta: 221.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:27,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.56ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 67.3MB in the beginning and 103.9MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.16ms. Allocated memory is still 127.9MB. Free memory was 103.9MB in the beginning and 102.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 127.9MB. Free memory was 102.3MB in the beginning and 101.7MB in the end (delta: 627.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 375.32ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 92.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 402.21ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 80.2MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.03ms. Allocated memory is still 127.9MB. Free memory was 80.2MB in the beginning and 80.0MB in the end (delta: 221.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: , 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 [2021-11-23 02:19:27,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/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_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V --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-aef121e [2021-11-23 02:19:30,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:19:30,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:19:30,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:19:30,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:19:30,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:19:30,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:19:30,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:19:30,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:19:30,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:19:30,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:19:30,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:19:30,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:19:30,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:19:30,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:19:30,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:19:30,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:19:30,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:19:30,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:19:30,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:19:30,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:19:30,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:19:30,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:19:30,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:19:30,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:19:30,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:19:30,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:19:30,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:19:30,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:19:30,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:19:30,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:19:30,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:19:30,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:19:30,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:19:30,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:19:30,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:19:30,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:19:30,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:19:30,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:19:30,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:19:30,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:19:30,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:19:30,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:19:30,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:19:30,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:19:30,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:19:30,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:19:30,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:19:30,681 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:19:30,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:19:30,681 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:19:30,682 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:19:30,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:19:30,684 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:19:30,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:19:30,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:19:30,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:19:30,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:19:30,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:19:30,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:19:30,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:19:30,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:19:30,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:19:30,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:19:30,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:19:30,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:19:30,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:19:30,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:19:30,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:19:30,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:19:30,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:19:30,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:30,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:19:30,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:19:30,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:19:30,692 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:19:30,693 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:19:30,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:19:30,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:19:30,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:19:30,694 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_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2021-11-23 02:19:31,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:19:31,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:19:31,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:19:31,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:19:31,243 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:19:31,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-11-23 02:19:31,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/1b8d63dd7/9a506a9e0a1840c1b5abf9385bff176b/FLAG4a1a9e198 [2021-11-23 02:19:32,050 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:19:32,051 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c [2021-11-23 02:19:32,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/1b8d63dd7/9a506a9e0a1840c1b5abf9385bff176b/FLAG4a1a9e198 [2021-11-23 02:19:32,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/data/1b8d63dd7/9a506a9e0a1840c1b5abf9385bff176b [2021-11-23 02:19:32,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:19:32,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:19:32,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:32,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:19:32,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:19:32,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12579ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32, skipping insertion in model container [2021-11-23 02:19:32,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:19:32,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:19:32,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-23 02:19:32,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:32,654 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:19:32,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-11-23 02:19:32,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:32,691 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:19:32,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32 WrapperNode [2021-11-23 02:19:32,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:32,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:32,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:19:32,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:19:32,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,799 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2021-11-23 02:19:32,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:32,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:19:32,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:19:32,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:19:32,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:19:32,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:19:32,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:19:32,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:19:32,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (1/1) ... [2021-11-23 02:19:32,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:32,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:19:32,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:19:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:19:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:19:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:19:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:19:33,070 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:19:33,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:19:33,168 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:19:33,175 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:19:33,175 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:19:33,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:33 BoogieIcfgContainer [2021-11-23 02:19:33,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:19:33,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:19:33,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:19:33,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:19:33,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:32" (1/3) ... [2021-11-23 02:19:33,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798b35d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:33, skipping insertion in model container [2021-11-23 02:19:33,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:32" (2/3) ... [2021-11-23 02:19:33,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798b35d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:33, skipping insertion in model container [2021-11-23 02:19:33,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:33" (3/3) ... [2021-11-23 02:19:33,189 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-11-23 02:19:33,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:19:33,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:19:33,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:19:33,269 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 [2021-11-23 02:19:33,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:19:33,287 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) [2021-11-23 02:19:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:19:33,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:33,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:19:33,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-23 02:19:33,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:19:33,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680199788] [2021-11-23 02:19:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:33,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:19:33,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:19:33,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:19:33,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:19:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:33,465 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:19:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:33,530 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 02:19:33,546 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:19:33,548 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:19:33,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:19:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:19:33,757 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:19:33,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:19:33,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:19:33 BoogieIcfgContainer [2021-11-23 02:19:33,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:19:33,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:19:33,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:19:33,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:19:33,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:33" (3/4) ... [2021-11-23 02:19:33,801 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:19:33,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:19:33,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:19:33,868 INFO L158 Benchmark]: Toolchain (without parser) took 1467.68ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.9MB in the beginning and 52.4MB in the end (delta: -15.5MB). Peak memory consumption was 382.1kB. Max. memory is 16.1GB. [2021-11-23 02:19:33,869 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:33,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.71ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 27.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:19:33,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.99ms. Allocated memory is still 58.7MB. Free memory was 26.9MB in the beginning and 41.8MB in the end (delta: -14.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:19:33,874 INFO L158 Benchmark]: Boogie Preprocessor took 48.56ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:33,878 INFO L158 Benchmark]: RCFGBuilder took 327.18ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 33.1MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:19:33,879 INFO L158 Benchmark]: TraceAbstraction took 610.77ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.5MB in the beginning and 53.8MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:33,880 INFO L158 Benchmark]: Witness Printer took 69.49ms. Allocated memory is still 75.5MB. Free memory was 53.8MB in the beginning and 52.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:33,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.71ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 27.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.99ms. Allocated memory is still 58.7MB. Free memory was 26.9MB in the beginning and 41.8MB in the end (delta: -14.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.56ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.18ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 33.1MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 610.77ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.5MB in the beginning and 53.8MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.49ms. Allocated memory is still 75.5MB. Free memory was 53.8MB in the beginning and 52.4MB in the end (delta: 1.4MB). 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 - 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! [2021-11-23 02:19:33,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6654111-22d0-4b17-bbca-812f20732024/bin/utaipan-EQgc7hIp5V/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