./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:55:33,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:55:33,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:55:33,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:55:33,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:55:33,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:55:33,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:55:33,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:55:33,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:55:33,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:55:33,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:55:33,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:55:33,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:55:33,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:55:33,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:55:33,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:55:33,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:55:33,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:55:33,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:55:33,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:55:33,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:55:33,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:55:33,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:55:33,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:55:33,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:55:33,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:55:33,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:55:33,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:55:33,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:55:33,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:55:33,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:55:33,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:55:33,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:55:33,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:55:33,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:55:33,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:55:33,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:55:33,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:55:33,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:55:33,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:55:33,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:55:33,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:55:33,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:55:33,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:55:33,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:55:33,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:55:33,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:55:33,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:55:33,328 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:55:33,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:55:33,328 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:55:33,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:55:33,329 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:55:33,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:55:33,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:55:33,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:55:33,330 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:55:33,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:55:33,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:55:33,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:55:33,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:55:33,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:55:33,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:55:33,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:55:33,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:55:33,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:55:33,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:55:33,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:55:33,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:55:33,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:55:33,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:55:33,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:55:33,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:55:33,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:55:33,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:33,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:55:33,336 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:55:33,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:55:33,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:55:33,337 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:55:33,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:55:33,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:55:33,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:55:33,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2022-11-20 20:55:33,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:55:33,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:55:33,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:55:33,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:55:33,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:55:33,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-benchs/nan_double.c [2022-11-20 20:55:36,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:55:36,980 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:55:36,981 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c [2022-11-20 20:55:36,985 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/fbc799d51/3de03038cf6e4e2dba16426821629fad/FLAG01971f170 [2022-11-20 20:55:36,999 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/fbc799d51/3de03038cf6e4e2dba16426821629fad [2022-11-20 20:55:37,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:55:37,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:55:37,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:37,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:55:37,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:55:37,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d02122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37, skipping insertion in model container [2022-11-20 20:55:37,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:55:37,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:55:37,245 WARN L237 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_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-20 20:55:37,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:37,261 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:55:37,270 WARN L237 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_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-20 20:55:37,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:37,282 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:55:37,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37 WrapperNode [2022-11-20 20:55:37,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:37,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:37,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:55:37,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:55:37,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,314 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-11-20 20:55:37,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:37,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:55:37,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:55:37,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:55:37,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:55:37,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:55:37,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:55:37,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:55:37,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (1/1) ... [2022-11-20 20:55:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:37,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:55:37,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:55:37,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:55:37,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:55:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:55:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:55:37,471 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:55:37,473 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:55:37,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:55:37,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:55:37,582 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:55:37,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:37 BoogieIcfgContainer [2022-11-20 20:55:37,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:55:37,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:55:37,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:55:37,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:55:37,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:55:37" (1/3) ... [2022-11-20 20:55:37,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bc01ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:37, skipping insertion in model container [2022-11-20 20:55:37,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:37" (2/3) ... [2022-11-20 20:55:37,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bc01ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:37, skipping insertion in model container [2022-11-20 20:55:37,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:37" (3/3) ... [2022-11-20 20:55:37,595 INFO L112 eAbstractionObserver]: Analyzing ICFG nan_double.c [2022-11-20 20:55:37,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:55:37,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:55:37,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:55:37,675 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@196a385d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:55:37,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:55:37,681 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) [2022-11-20 20:55:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 20:55:37,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:37,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 20:55:37,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2022-11-20 20:55:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:37,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254143841] [2022-11-20 20:55:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:55:37,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:55:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:55:37,831 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:55:37,833 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:55:37,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:55:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:55:37,841 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:55:37,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:55:37,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:55:37 BoogieIcfgContainer [2022-11-20 20:55:37,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:55:37,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:55:37,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:55:37,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:55:37,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:37" (3/4) ... [2022-11-20 20:55:37,869 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:55:37,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:55:37,870 INFO L158 Benchmark]: Toolchain (without parser) took 866.58ms. Allocated memory is still 172.0MB. Free memory was 135.6MB in the beginning and 112.7MB in the end (delta: 22.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-11-20 20:55:37,871 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:55:37,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.98ms. Allocated memory is still 172.0MB. Free memory was 135.6MB in the beginning and 139.1MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:55:37,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.39ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 137.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:55:37,873 INFO L158 Benchmark]: Boogie Preprocessor took 19.15ms. Allocated memory is still 172.0MB. Free memory was 137.9MB in the beginning and 136.9MB in the end (delta: 992.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:55:37,873 INFO L158 Benchmark]: RCFGBuilder took 250.25ms. Allocated memory is still 172.0MB. Free memory was 136.9MB in the beginning and 126.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:55:37,874 INFO L158 Benchmark]: TraceAbstraction took 276.97ms. Allocated memory is still 172.0MB. Free memory was 125.3MB in the beginning and 112.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:55:37,875 INFO L158 Benchmark]: Witness Printer took 4.60ms. Allocated memory is still 172.0MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:55:37,878 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 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.98ms. Allocated memory is still 172.0MB. Free memory was 135.6MB in the beginning and 139.1MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.39ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 137.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.15ms. Allocated memory is still 172.0MB. Free memory was 137.9MB in the beginning and 136.9MB in the end (delta: 992.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.25ms. Allocated memory is still 172.0MB. Free memory was 136.9MB in the beginning and 126.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 276.97ms. Allocated memory is still 172.0MB. Free memory was 125.3MB in the beginning and 112.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.60ms. Allocated memory is still 172.0MB. Free memory is still 112.7MB. 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, 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 [2022-11-20 20:55:37,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:55:40,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:55:40,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:55:40,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:55:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:55:40,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:55:40,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:55:40,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:55:40,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:55:40,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:55:40,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:55:40,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:55:40,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:55:40,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:55:40,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:55:40,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:55:40,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:55:40,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:55:40,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:55:40,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:55:40,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:55:40,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:55:40,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:55:40,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:55:40,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:55:40,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:55:40,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:55:40,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:55:40,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:55:40,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:55:40,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:55:40,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:55:40,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:55:40,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:55:40,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:55:40,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:55:40,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:55:40,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:55:40,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:55:40,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:55:40,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:55:40,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:55:40,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:55:40,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:55:40,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:55:40,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:55:40,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:55:40,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:55:40,535 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:55:40,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:55:40,536 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:55:40,536 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:55:40,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:55:40,536 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:55:40,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:55:40,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:55:40,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:55:40,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:55:40,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:55:40,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:55:40,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:55:40,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:55:40,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:55:40,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:55:40,539 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:55:40,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:55:40,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:55:40,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:55:40,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:55:40,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:55:40,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:55:40,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:40,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:55:40,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:55:40,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:55:40,542 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:55:40,542 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:55:40,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:55:40,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:55:40,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:55:40,543 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_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2022-11-20 20:55:40,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:55:40,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:55:40,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:55:40,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:55:40,921 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:55:40,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-benchs/nan_double.c [2022-11-20 20:55:44,106 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:55:44,306 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:55:44,306 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c [2022-11-20 20:55:44,312 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/a8344022e/acac4eb17e994777be36685dff1715bb/FLAG62c9d631c [2022-11-20 20:55:44,332 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/data/a8344022e/acac4eb17e994777be36685dff1715bb [2022-11-20 20:55:44,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:55:44,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:55:44,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:44,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:55:44,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:55:44,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60487942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44, skipping insertion in model container [2022-11-20 20:55:44,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:55:44,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:55:44,498 WARN L237 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_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-20 20:55:44,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:44,524 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:55:44,539 WARN L237 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_11b24f75-4d8c-4c50-8571-792492c083d3/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-20 20:55:44,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:44,557 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:55:44,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44 WrapperNode [2022-11-20 20:55:44,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:44,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:44,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:55:44,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:55:44,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,592 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2022-11-20 20:55:44,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:44,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:55:44,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:55:44,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:55:44,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:55:44,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:55:44,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:55:44,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:55:44,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2022-11-20 20:55:44,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:44,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:55:44,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:55:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:55:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:55:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:55:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:55:44,800 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:55:44,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:55:44,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:55:44,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:55:44,970 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:55:44,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:44 BoogieIcfgContainer [2022-11-20 20:55:44,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:55:44,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:55:44,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:55:44,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:55:44,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:55:44" (1/3) ... [2022-11-20 20:55:44,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27aa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:44, skipping insertion in model container [2022-11-20 20:55:44,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (2/3) ... [2022-11-20 20:55:44,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27aa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:44, skipping insertion in model container [2022-11-20 20:55:44,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:44" (3/3) ... [2022-11-20 20:55:44,996 INFO L112 eAbstractionObserver]: Analyzing ICFG nan_double.c [2022-11-20 20:55:45,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:55:45,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:55:45,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:55:45,092 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@238545ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:55:45,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:55:45,097 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) [2022-11-20 20:55:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:55:45,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:45,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:55:45,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:45,114 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-11-20 20:55:45,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:55:45,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902423720] [2022-11-20 20:55:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:45,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:55:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:55:45,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:55:45,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 20:55:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:55:45,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:55:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:55:45,283 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 20:55:45,286 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:55:45,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:55:45,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:55:45,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:55:45,509 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:55:45,515 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:55:45,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:55:45 BoogieIcfgContainer [2022-11-20 20:55:45,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:55:45,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:55:45,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:55:45,540 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:55:45,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:44" (3/4) ... [2022-11-20 20:55:45,542 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 20:55:45,597 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:55:45,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:55:45,598 INFO L158 Benchmark]: Toolchain (without parser) took 1262.32ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 45.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,599 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 51.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:55:45,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.33ms. Allocated memory is still 81.8MB. Free memory was 60.0MB in the beginning and 50.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.36ms. Allocated memory is still 81.8MB. Free memory was 50.0MB in the beginning and 48.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,602 INFO L158 Benchmark]: Boogie Preprocessor took 24.32ms. Allocated memory is still 81.8MB. Free memory was 48.4MB in the beginning and 47.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:55:45,602 INFO L158 Benchmark]: RCFGBuilder took 351.09ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 59.7MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,603 INFO L158 Benchmark]: TraceAbstraction took 558.70ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 47.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,603 INFO L158 Benchmark]: Witness Printer took 58.53ms. Allocated memory is still 81.8MB. Free memory was 47.4MB in the beginning and 45.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:55:45,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 51.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.33ms. Allocated memory is still 81.8MB. Free memory was 60.0MB in the beginning and 50.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.36ms. Allocated memory is still 81.8MB. Free memory was 50.0MB in the beginning and 48.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.32ms. Allocated memory is still 81.8MB. Free memory was 48.4MB in the beginning and 47.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.09ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 59.7MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 558.70ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 47.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 58.53ms. Allocated memory is still 81.8MB. Free memory was 47.4MB in the beginning and 45.8MB 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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! [2022-11-20 20:55:45,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b24f75-4d8c-4c50-8571-792492c083d3/bin/utaipan-6cKwYrpEi9/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