./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 e04fb08f 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 15:55:13,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:55:13,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:55:13,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:55:13,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:55:13,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:55:13,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:55:13,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:55:13,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:55:13,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:55:13,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:55:13,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:55:13,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:55:13,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:55:13,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:55:13,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:55:13,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:55:13,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:55:13,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:55:13,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:55:13,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:55:13,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:55:13,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:55:13,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:55:13,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:55:13,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:55:13,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:55:13,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:55:13,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:55:13,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:55:13,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:55:13,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:55:13,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:55:13,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:55:13,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:55:13,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:55:13,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:55:13,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:55:13,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:55:13,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:55:13,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:55:13,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 15:55:13,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:55:13,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:55:13,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:55:13,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:55:13,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:55:13,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:55:13,498 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:55:13,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:55:13,498 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:55:13,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:55:13,500 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:55:13,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:55:13,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:55:13,500 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:55:13,501 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:55:13,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:55:13,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:55:13,501 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:55:13,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:55:13,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:55:13,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:55:13,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:55:13,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:55:13,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:55:13,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:55:13,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:55:13,505 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:55:13,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:55:13,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:55:13,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:55:13,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:55:13,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:55:13,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:55:13,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:55:13,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:55:13,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:55:13,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:55:13,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:55:13,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:55:13,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:55:13,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:55:13,509 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2022-11-16 15:55:13,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:55:13,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:55:13,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:55:13,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:55:13,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:55:13,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/nan_double.c [2022-11-16 15:55:13,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/61b73b0c2/6b6d296a0f584b11bebe1d4b774bd72b/FLAG7b7ab49d5 [2022-11-16 15:55:14,413 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:55:14,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c [2022-11-16 15:55:14,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/61b73b0c2/6b6d296a0f584b11bebe1d4b774bd72b/FLAG7b7ab49d5 [2022-11-16 15:55:14,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/61b73b0c2/6b6d296a0f584b11bebe1d4b774bd72b [2022-11-16 15:55:14,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:55:14,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:55:14,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:55:14,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:55:14,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:55:14,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:14" (1/1) ... [2022-11-16 15:55:14,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a68b0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:14, skipping insertion in model container [2022-11-16 15:55:14,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:14" (1/1) ... [2022-11-16 15:55:14,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:55:14,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:55:14,989 WARN L229 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-16 15:55:14,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:15,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:55:15,053 WARN L229 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-16 15:55:15,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:15,071 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:55:15,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15 WrapperNode [2022-11-16 15:55:15,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:55:15,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:15,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:55:15,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:55:15,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,109 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-11-16 15:55:15,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:15,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:55:15,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:55:15,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:55:15,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:55:15,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:55:15,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:55:15,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:55:15,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (1/1) ... [2022-11-16 15:55:15,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:55:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:15,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:55:15,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:55:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:55:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:55:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:55:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:55:15,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:55:15,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:55:15,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:55:15,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:55:15,455 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 15:55:15,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:15 BoogieIcfgContainer [2022-11-16 15:55:15,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:55:15,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:55:15,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:55:15,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:55:15,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:55:14" (1/3) ... [2022-11-16 15:55:15,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b854c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:15, skipping insertion in model container [2022-11-16 15:55:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:15" (2/3) ... [2022-11-16 15:55:15,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b854c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:15, skipping insertion in model container [2022-11-16 15:55:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:15" (3/3) ... [2022-11-16 15:55:15,471 INFO L112 eAbstractionObserver]: Analyzing ICFG nan_double.c [2022-11-16 15:55:15,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:55:15,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:55:15,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:55:15,579 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;@9abeaa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:55:15,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:55:15,586 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) [2022-11-16 15:55:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 15:55:15,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:15,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 15:55:15,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2022-11-16 15:55:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572306823] [2022-11-16 15:55:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:55:15,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 15:55:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:55:15,777 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 15:55:15,780 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 15:55:15,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:55:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:55:15,789 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 15:55:15,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:55:15,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:55:15 BoogieIcfgContainer [2022-11-16 15:55:15,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:55:15,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:55:15,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:55:15,820 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:55:15,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:15" (3/4) ... [2022-11-16 15:55:15,824 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 15:55:15,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:55:15,826 INFO L158 Benchmark]: Toolchain (without parser) took 1026.17ms. Allocated memory is still 123.7MB. Free memory was 83.1MB in the beginning and 73.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-16 15:55:15,827 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:15,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.59ms. Allocated memory is still 123.7MB. Free memory was 82.9MB in the beginning and 98.5MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 15:55:15,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.28ms. Allocated memory is still 123.7MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:55:15,831 INFO L158 Benchmark]: Boogie Preprocessor took 31.24ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 96.5MB in the end (delta: 545.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:15,836 INFO L158 Benchmark]: RCFGBuilder took 315.17ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 87.1MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 15:55:15,837 INFO L158 Benchmark]: TraceAbstraction took 355.91ms. Allocated memory is still 123.7MB. Free memory was 86.0MB in the beginning and 73.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 15:55:15,839 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 123.7MB. Free memory was 73.3MB in the beginning and 73.0MB in the end (delta: 346.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:15,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.59ms. Allocated memory is still 123.7MB. Free memory was 82.9MB in the beginning and 98.5MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.28ms. Allocated memory is still 123.7MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.24ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 96.5MB in the end (delta: 545.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 315.17ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 87.1MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 355.91ms. Allocated memory is still 123.7MB. Free memory was 86.0MB in the beginning and 73.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 123.7MB. Free memory was 73.3MB in the beginning and 73.0MB in the end (delta: 346.2kB). 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 [2022-11-16 15:55:15,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 15:55:18,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:55:18,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:55:18,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:55:18,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:55:18,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:55:18,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:55:18,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:55:18,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:55:18,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:55:18,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:55:18,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:55:18,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:55:18,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:55:18,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:55:18,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:55:18,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:55:18,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:55:18,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:55:18,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:55:18,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:55:18,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:55:18,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:55:18,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:55:18,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:55:18,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:55:18,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:55:18,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:55:18,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:55:18,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:55:18,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:55:18,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:55:18,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:55:18,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:55:18,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:55:18,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:55:18,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:55:18,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:55:18,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:55:18,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:55:18,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:55:18,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 15:55:18,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:55:18,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:55:18,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:55:18,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:55:18,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:55:18,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:55:18,451 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:55:18,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:55:18,452 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:55:18,452 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:55:18,453 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:55:18,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:55:18,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:55:18,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:55:18,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:55:18,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:55:18,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:55:18,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:55:18,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:55:18,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 15:55:18,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 15:55:18,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 15:55:18,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:55:18,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:55:18,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:55:18,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:55:18,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:55:18,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 15:55:18,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:55:18,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:55:18,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:55:18,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:55:18,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:55:18,462 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 15:55:18,462 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 15:55:18,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:55:18,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:55:18,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 15:55:18,464 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4232596288b496aee224c4b4f91c0d4dc8bab0d40c539eda179d1ef3a227da3 [2022-11-16 15:55:18,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:55:18,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:55:18,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:55:18,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:55:18,876 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:55:18,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/nan_double.c [2022-11-16 15:55:18,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/5ddec8d6e/bc423302f1284f75b1586a5e6de8c403/FLAGef99ec3b5 [2022-11-16 15:55:19,458 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:55:19,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c [2022-11-16 15:55:19,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/5ddec8d6e/bc423302f1284f75b1586a5e6de8c403/FLAGef99ec3b5 [2022-11-16 15:55:19,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/data/5ddec8d6e/bc423302f1284f75b1586a5e6de8c403 [2022-11-16 15:55:19,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:55:19,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:55:19,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:55:19,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:55:19,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:55:19,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:19" (1/1) ... [2022-11-16 15:55:19,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f84eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:19, skipping insertion in model container [2022-11-16 15:55:19,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:19" (1/1) ... [2022-11-16 15:55:19,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:55:19,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:55:20,045 WARN L229 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-16 15:55:20,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:20,067 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:55:20,078 WARN L229 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_be912bc8-bbb6-4d32-8fa2-21f276ffae55/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2022-11-16 15:55:20,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:55:20,142 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:55:20,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20 WrapperNode [2022-11-16 15:55:20,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:55:20,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:20,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:55:20,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:55:20,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,181 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2022-11-16 15:55:20,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:55:20,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:55:20,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:55:20,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:55:20,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:55:20,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:55:20,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:55:20,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:55:20,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (1/1) ... [2022-11-16 15:55:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:55:20,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:20,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:55:20,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:55:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:55:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 15:55:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:55:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:55:20,388 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:55:20,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:55:20,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:55:20,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:55:20,496 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 15:55:20,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:20 BoogieIcfgContainer [2022-11-16 15:55:20,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:55:20,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:55:20,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:55:20,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:55:20,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:55:19" (1/3) ... [2022-11-16 15:55:20,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfb5862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:20, skipping insertion in model container [2022-11-16 15:55:20,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:20" (2/3) ... [2022-11-16 15:55:20,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfb5862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:20, skipping insertion in model container [2022-11-16 15:55:20,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:20" (3/3) ... [2022-11-16 15:55:20,513 INFO L112 eAbstractionObserver]: Analyzing ICFG nan_double.c [2022-11-16 15:55:20,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:55:20,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:55:20,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:55:20,593 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;@5d14b017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:55:20,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:55:20,598 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) [2022-11-16 15:55:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 15:55:20,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:20,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 15:55:20,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-11-16 15:55:20,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:55:20,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842177060] [2022-11-16 15:55:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:20,627 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 [2022-11-16 15:55:20,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:55:20,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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) [2022-11-16 15:55:20,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:55:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:55:20,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 15:55:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:55:20,760 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-16 15:55:20,764 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 15:55:20,767 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:55:20,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:55:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:55:20,986 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 15:55:20,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:55:21,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:55:21 BoogieIcfgContainer [2022-11-16 15:55:21,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:55:21,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:55:21,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:55:21,021 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:55:21,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:55:20" (3/4) ... [2022-11-16 15:55:21,023 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 15:55:21,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 15:55:21,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:55:21,082 INFO L158 Benchmark]: Toolchain (without parser) took 1243.76ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 50.0MB in the end (delta: -374.7kB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-11-16 15:55:21,083 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:21,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.51ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 51.7MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 15:55:21,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.15ms. Allocated memory is still 67.1MB. Free memory was 51.7MB in the beginning and 50.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:21,090 INFO L158 Benchmark]: Boogie Preprocessor took 51.87ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 48.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:55:21,090 INFO L158 Benchmark]: RCFGBuilder took 267.60ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 40.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 15:55:21,091 INFO L158 Benchmark]: TraceAbstraction took 512.41ms. Allocated memory is still 67.1MB. Free memory was 39.6MB in the beginning and 28.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 15:55:21,091 INFO L158 Benchmark]: Witness Printer took 60.46ms. Allocated memory is still 67.1MB. Free memory was 28.2MB in the beginning and 50.0MB in the end (delta: -21.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-11-16 15:55:21,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.51ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 51.7MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.15ms. Allocated memory is still 67.1MB. Free memory was 51.7MB in the beginning and 50.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.87ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 48.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 267.60ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 40.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 512.41ms. Allocated memory is still 67.1MB. Free memory was 39.6MB in the beginning and 28.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 60.46ms. Allocated memory is still 67.1MB. Free memory was 28.2MB in the beginning and 50.0MB in the end (delta: -21.9MB). Peak memory consumption was 5.7MB. 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! [2022-11-16 15:55:21,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be912bc8-bbb6-4d32-8fa2-21f276ffae55/bin/utaipan-Xvt2sAort0/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