./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:28:56,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:56,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:56,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:56,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:56,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:56,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:56,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:56,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:56,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:56,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:56,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:56,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:56,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:56,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:56,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:56,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:56,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:56,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:56,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:56,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:56,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:56,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:56,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:56,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:56,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:56,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:56,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:56,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:56,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:56,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:56,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:56,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:56,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:56,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:56,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:56,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:56,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:56,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:56,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:56,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:56,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:28:56,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:56,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:56,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:56,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:56,722 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:56,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:56,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:56,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:28:56,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:56,724 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:56,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:28:56,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:28:56,725 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:56,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:28:56,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:28:56,726 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:28:56,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:56,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:28:56,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:28:56,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:28:56,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:56,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:28:56,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:56,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:28:56,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:56,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:28:56,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:28:56,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:56,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:28:56,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:56,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:56,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:56,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:56,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:56,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:28:56,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:28:56,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:28:56,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:28:56,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:56,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:56,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-11-19 14:28:57,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:57,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:57,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:57,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:57,114 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:57,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-11-19 14:28:57,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/0bd9657eb/408df3b4e7c146b295282db607a32741/FLAG22f2c1bfc [2021-11-19 14:28:57,720 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:28:57,720 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c [2021-11-19 14:28:57,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/0bd9657eb/408df3b4e7c146b295282db607a32741/FLAG22f2c1bfc [2021-11-19 14:28:58,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/0bd9657eb/408df3b4e7c146b295282db607a32741 [2021-11-19 14:28:58,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:28:58,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:28:58,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:58,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:28:58,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:28:58,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268d1bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58, skipping insertion in model container [2021-11-19 14:28:58,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:28:58,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:58,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-19 14:28:58,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:58,428 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:28:58,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-19 14:28:58,445 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:58,461 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:28:58,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58 WrapperNode [2021-11-19 14:28:58,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:58,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:58,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:28:58,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:28:58,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,520 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-19 14:28:58,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:58,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:28:58,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:28:58,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:28:58,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:28:58,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:28:58,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:28:58,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:28:58,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (1/1) ... [2021-11-19 14:28:58,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:28:58,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:28:58,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:28:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:28:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:28:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:28:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:28:58,736 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:28:58,738 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:28:58,862 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:28:58,887 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:28:58,887 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:28:58,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:58 BoogieIcfgContainer [2021-11-19 14:28:58,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:28:58,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:28:58,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:28:58,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:28:58,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:28:58" (1/3) ... [2021-11-19 14:28:58,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c49d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:58, skipping insertion in model container [2021-11-19 14:28:58,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:58" (2/3) ... [2021-11-19 14:28:58,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c49d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:58, skipping insertion in model container [2021-11-19 14:28:58,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:58" (3/3) ... [2021-11-19 14:28:58,905 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-11-19 14:28:58,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:28:58,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:28:58,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:28:59,011 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:28:59,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:28:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:28:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:28:59,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:59,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:28:59,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:28:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-11-19 14:28:59,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:28:59,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85664462] [2021-11-19 14:28:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:59,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:28:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:28:59,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:28:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:28:59,255 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:28:59,260 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:28:59,261 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:28:59,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:28:59,270 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:28:59,275 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:28:59,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:28:59 BoogieIcfgContainer [2021-11-19 14:28:59,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:28:59,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:28:59,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:28:59,304 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:28:59,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:58" (3/4) ... [2021-11-19 14:28:59,308 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:28:59,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:28:59,310 INFO L158 Benchmark]: Toolchain (without parser) took 1227.16ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 61.5MB in the end (delta: 26.8MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-11-19 14:28:59,311 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:59,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.33ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 85.4MB in the end (delta: 3.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:28:59,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.32ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 84.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:28:59,314 INFO L158 Benchmark]: Boogie Preprocessor took 36.91ms. Allocated memory is still 113.2MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:59,320 INFO L158 Benchmark]: RCFGBuilder took 330.92ms. Allocated memory is still 113.2MB. Free memory was 82.9MB in the beginning and 74.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:28:59,321 INFO L158 Benchmark]: TraceAbstraction took 403.27ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 62.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:28:59,322 INFO L158 Benchmark]: Witness Printer took 5.67ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 61.5MB in the end (delta: 253.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:59,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.33ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 85.4MB in the end (delta: 3.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.32ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 84.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.91ms. Allocated memory is still 113.2MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.92ms. Allocated memory is still 113.2MB. Free memory was 82.9MB in the beginning and 74.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 403.27ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 62.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.67ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 61.5MB in the end (delta: 253.0kB). 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 someBinaryFLOATComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 14:28:59,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:02,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:02,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:02,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:02,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:02,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:02,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:02,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:02,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:02,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:02,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:02,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:02,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:02,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:02,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:02,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:02,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:02,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:02,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:02,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:02,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:02,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:02,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:02,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:02,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:02,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:02,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:02,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:02,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:02,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:02,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:02,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:02,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:02,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:02,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:02,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:02,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:02,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:02,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:02,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:02,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:02,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:29:02,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:02,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:02,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:02,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:02,432 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:02,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:02,433 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:02,433 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:02,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:02,433 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:02,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:02,437 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:29:02,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:29:02,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:02,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:29:02,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:02,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:29:02,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:02,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:29:02,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:29:02,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:29:02,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:29:02,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:02,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:29:02,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:02,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:29:02,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:02,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:02,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:02,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:02,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:29:02,442 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:29:02,442 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:29:02,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:29:02,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:02,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:02,444 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_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-11-19 14:29:02,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:02,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:02,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:02,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:02,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:02,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-benchs/nan_float.c [2021-11-19 14:29:02,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/df2d908ec/a1af7fb831bf4feaac2c8d44acf354ea/FLAGad6fb6d86 [2021-11-19 14:29:03,690 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:03,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c [2021-11-19 14:29:03,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/df2d908ec/a1af7fb831bf4feaac2c8d44acf354ea/FLAGad6fb6d86 [2021-11-19 14:29:04,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/data/df2d908ec/a1af7fb831bf4feaac2c8d44acf354ea [2021-11-19 14:29:04,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:04,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:04,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:04,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:04,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:04,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c07186f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04, skipping insertion in model container [2021-11-19 14:29:04,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:04,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:04,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-19 14:29:04,329 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:04,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:29:04,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/sv-benchmarks/c/float-benchs/nan_float.c[434,447] [2021-11-19 14:29:04,377 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:04,396 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:29:04,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04 WrapperNode [2021-11-19 14:29:04,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:04,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:04,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:29:04,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:29:04,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,483 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2021-11-19 14:29:04,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:04,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:29:04,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:29:04,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:29:04,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:29:04,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:29:04,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:29:04,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:29:04,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (1/1) ... [2021-11-19 14:29:04,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:04,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:29:04,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:29:04,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:29:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:29:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:29:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:29:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:29:04,693 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:29:04,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:29:04,786 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:29:04,793 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:29:04,793 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:29:04,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:04 BoogieIcfgContainer [2021-11-19 14:29:04,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:29:04,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:29:04,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:29:04,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:29:04,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:29:04" (1/3) ... [2021-11-19 14:29:04,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1920f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:04, skipping insertion in model container [2021-11-19 14:29:04,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:04" (2/3) ... [2021-11-19 14:29:04,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1920f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:04, skipping insertion in model container [2021-11-19 14:29:04,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:04" (3/3) ... [2021-11-19 14:29:04,805 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-11-19 14:29:04,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:29:04,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:29:04,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:29:04,880 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:29:04,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:29:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:29:04,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:04,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:29:04,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:29:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-11-19 14:29:04,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:04,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464678585] [2021-11-19 14:29:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:04,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:04,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:04,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:29:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:29:05,018 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:29:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:29:05,085 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 14:29:05,087 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:29:05,103 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:29:05,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:29:05,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:05,337 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:29:05,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:29:05,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:29:05 BoogieIcfgContainer [2021-11-19 14:29:05,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:29:05,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:29:05,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:29:05,375 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:29:05,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:04" (3/4) ... [2021-11-19 14:29:05,380 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:29:05,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:29:05,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:29:05,443 INFO L158 Benchmark]: Toolchain (without parser) took 1385.86ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.9MB in the beginning and 48.3MB in the end (delta: -13.4MB). Peak memory consumption was 323.6kB. Max. memory is 16.1GB. [2021-11-19 14:29:05,444 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:05,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.00ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 25.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:29:05,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.11ms. Allocated memory is still 56.6MB. Free memory was 25.1MB in the beginning and 39.8MB in the end (delta: -14.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 14:29:05,449 INFO L158 Benchmark]: Boogie Preprocessor took 28.61ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:05,453 INFO L158 Benchmark]: RCFGBuilder took 281.57ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 31.1MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:29:05,454 INFO L158 Benchmark]: TraceAbstraction took 571.36ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 30.6MB in the beginning and 49.8MB in the end (delta: -19.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:05,454 INFO L158 Benchmark]: Witness Printer took 66.82ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 48.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:05,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.00ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 25.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.11ms. Allocated memory is still 56.6MB. Free memory was 25.1MB in the beginning and 39.8MB in the end (delta: -14.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.61ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 281.57ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 31.1MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 571.36ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 30.6MB in the beginning and 49.8MB in the end (delta: -19.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 66.82ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 48.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 14:29:05,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539c654f-4835-4caf-a335-fdfe692e477c/bin/utaipan-UbGMyvGFUs/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