./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.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_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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_071521f7-9425-4f49-8cc4-888920f44294/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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:38:11,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:38:11,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:38:11,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:38:11,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:38:11,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:38:11,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:38:11,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:38:11,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:38:11,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:38:11,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:38:11,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:38:11,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:38:11,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:38:11,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:38:11,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:38:11,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:38:11,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:38:11,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:38:11,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:38:11,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:38:11,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:38:11,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:38:11,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:38:11,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:38:11,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:38:11,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:38:11,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:38:11,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:38:11,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:38:11,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:38:11,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:38:11,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:38:11,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:38:11,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:38:11,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:38:11,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:38:11,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:38:11,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:38:11,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:38:11,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:38:11,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:38:11,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:38:11,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:38:11,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:38:11,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:38:11,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:38:11,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:38:11,546 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:38:11,546 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:38:11,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:38:11,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:38:11,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:38:11,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:38:11,548 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:38:11,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:38:11,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:38:11,549 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:38:11,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:38:11,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:38:11,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:38:11,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:38:11,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:38:11,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:38:11,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:38:11,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:38:11,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:38:11,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:38:11,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:38:11,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:38:11,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:38:11,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:38:11,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:38:11,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:11,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:38:11,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:38:11,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:38:11,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:38:11,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:38:11,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:38:11,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:38:11,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:38:11,558 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_071521f7-9425-4f49-8cc4-888920f44294/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-19 13:38:11,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:38:11,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:38:11,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:38:11,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:38:11,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:38:11,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:12,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/f6200d272/adadff5d8333484097c547f4eac3d652/FLAG59153db04 [2021-11-19 13:38:12,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:38:12,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:12,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/f6200d272/adadff5d8333484097c547f4eac3d652/FLAG59153db04 [2021-11-19 13:38:12,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/f6200d272/adadff5d8333484097c547f4eac3d652 [2021-11-19 13:38:12,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:38:12,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:38:13,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:13,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:38:13,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:38:13,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:12" (1/1) ... [2021-11-19 13:38:13,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65959643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13, skipping insertion in model container [2021-11-19 13:38:13,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:12" (1/1) ... [2021-11-19 13:38:13,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:38:13,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:38:13,280 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 13:38:13,285 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 13:38:13,344 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:13,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:38:13,372 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 13:38:13,374 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 13:38:13,415 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:13,440 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:38:13,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13 WrapperNode [2021-11-19 13:38:13,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:13,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:13,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:38:13,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:38:13,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,505 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-19 13:38:13,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:13,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:38:13,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:38:13,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:38:13,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:38:13,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:38:13,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:38:13,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:38:13,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (1/1) ... [2021-11-19 13:38:13,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:38:13,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:38:13,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:38:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:38:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 13:38:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 13:38:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-19 13:38:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-19 13:38:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:38:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:38:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:38:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:38:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:38:13,799 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:38:13,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:38:14,170 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:38:14,243 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:38:14,243 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:38:14,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:14 BoogieIcfgContainer [2021-11-19 13:38:14,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:38:14,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:38:14,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:38:14,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:38:14,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:38:12" (1/3) ... [2021-11-19 13:38:14,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cfd87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:14, skipping insertion in model container [2021-11-19 13:38:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:13" (2/3) ... [2021-11-19 13:38:14,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cfd87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:14, skipping insertion in model container [2021-11-19 13:38:14,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:14" (3/3) ... [2021-11-19 13:38:14,269 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:14,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:38:14,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:38:14,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:38:14,341 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 13:38:14,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:38:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:38:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:38:14,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:14,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:38:14,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash 6807338, now seen corresponding path program 1 times [2021-11-19 13:38:14,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:38:14,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504070137] [2021-11-19 13:38:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:14,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:38:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:38:14,513 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:38:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:38:14,555 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:38:14,558 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:38:14,560 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 13:38:14,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 13:38:14,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:38:14,569 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 13:38:14,586 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:38:14,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:38:14 BoogieIcfgContainer [2021-11-19 13:38:14,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:38:14,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:38:14,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:38:14,612 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:38:14,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:14" (3/4) ... [2021-11-19 13:38:14,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 13:38:14,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:38:14,619 INFO L158 Benchmark]: Toolchain (without parser) took 1632.54ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 76.1MB in the beginning and 127.4MB in the end (delta: -51.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:14,619 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:14,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.66ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 81.9MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:38:14,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.15ms. Allocated memory is still 111.1MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:38:14,622 INFO L158 Benchmark]: Boogie Preprocessor took 60.53ms. Allocated memory is still 111.1MB. Free memory was 79.9MB in the beginning and 78.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:14,623 INFO L158 Benchmark]: RCFGBuilder took 687.82ms. Allocated memory is still 111.1MB. Free memory was 78.7MB in the beginning and 63.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 13:38:14,624 INFO L158 Benchmark]: TraceAbstraction took 352.90ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 63.1MB in the beginning and 127.4MB in the end (delta: -64.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:14,625 INFO L158 Benchmark]: Witness Printer took 5.91ms. Allocated memory is still 153.1MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:38:14,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.66ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 81.9MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.15ms. Allocated memory is still 111.1MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.53ms. Allocated memory is still 111.1MB. Free memory was 79.9MB in the beginning and 78.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 687.82ms. Allocated memory is still 111.1MB. Free memory was 78.7MB in the beginning and 63.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 352.90ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 63.1MB in the beginning and 127.4MB in the end (delta: -64.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.91ms. Allocated memory is still 153.1MB. Free memory is still 127.4MB. 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 - UnprovableResult [Line: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 2 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=49occurred 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 could not prove your program: unable to determine feasibility of some traces [2021-11-19 13:38:14,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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_071521f7-9425-4f49-8cc4-888920f44294/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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:38:17,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:38:17,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:38:17,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:38:17,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:38:17,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:38:17,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:38:17,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:38:17,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:38:17,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:38:17,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:38:17,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:38:17,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:38:17,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:38:17,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:38:17,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:38:17,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:38:17,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:38:17,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:38:17,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:38:17,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:38:17,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:38:17,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:38:17,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:38:17,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:38:17,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:38:17,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:38:17,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:38:17,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:38:17,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:38:17,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:38:17,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:38:17,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:38:17,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:38:17,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:38:17,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:38:17,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:38:17,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:38:17,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:38:17,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:38:17,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:38:17,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:38:17,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:38:17,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:38:17,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:38:17,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:38:17,653 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:38:17,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:38:17,654 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:38:17,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:38:17,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:38:17,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:38:17,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:38:17,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:38:17,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:38:17,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:38:17,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:38:17,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:38:17,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:38:17,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:38:17,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:38:17,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:38:17,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:38:17,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:38:17,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:38:17,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:38:17,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:38:17,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:38:17,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:38:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:17,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:38:17,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:38:17,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:38:17,661 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:38:17,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:38:17,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:38:17,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:38:17,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:38:17,662 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_071521f7-9425-4f49-8cc4-888920f44294/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-19 13:38:18,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:38:18,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:38:18,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:38:18,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:38:18,125 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:38:18,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:18,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/3f284c4d3/eac3d7213ac243f8ae2e0ed893976a62/FLAGe643f5bea [2021-11-19 13:38:18,814 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:38:18,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:18,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/3f284c4d3/eac3d7213ac243f8ae2e0ed893976a62/FLAGe643f5bea [2021-11-19 13:38:19,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/data/3f284c4d3/eac3d7213ac243f8ae2e0ed893976a62 [2021-11-19 13:38:19,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:38:19,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:38:19,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:19,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:38:19,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:38:19,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4594c897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19, skipping insertion in model container [2021-11-19 13:38:19,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:38:19,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:38:19,422 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 13:38:19,428 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 13:38:19,484 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:19,544 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:38:19,589 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 13:38:19,591 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_071521f7-9425-4f49-8cc4-888920f44294/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 13:38:19,629 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:38:19,646 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:38:19,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19 WrapperNode [2021-11-19 13:38:19,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:38:19,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:19,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:38:19,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:38:19,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,697 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-11-19 13:38:19,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:38:19,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:38:19,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:38:19,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:38:19,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:38:19,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:38:19,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:38:19,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:38:19,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (1/1) ... [2021-11-19 13:38:19,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:38:19,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:38:19,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:38:19,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:38:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:38:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:38:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 13:38:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 13:38:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-19 13:38:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-19 13:38:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:38:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:38:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:38:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:38:19,969 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:38:19,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:38:22,458 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:38:22,467 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:38:22,467 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:38:22,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:22 BoogieIcfgContainer [2021-11-19 13:38:22,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:38:22,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:38:22,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:38:22,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:38:22,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:38:19" (1/3) ... [2021-11-19 13:38:22,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf97453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:22, skipping insertion in model container [2021-11-19 13:38:22,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:19" (2/3) ... [2021-11-19 13:38:22,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf97453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:22, skipping insertion in model container [2021-11-19 13:38:22,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:22" (3/3) ... [2021-11-19 13:38:22,479 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-19 13:38:22,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:38:22,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:38:22,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:38:22,551 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 13:38:22,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:38:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:38:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:38:22,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:22,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:22,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 13:38:22,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:22,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048221851] [2021-11-19 13:38:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:22,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:22,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:22,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:38:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:23,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:38:23,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:23,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:23,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:23,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048221851] [2021-11-19 13:38:23,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048221851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:23,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:23,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:38:23,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670830487] [2021-11-19 13:38:23,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:23,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:38:23,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:38:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:38:23,591 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 13:38:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:23,646 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-19 13:38:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:38:23,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2021-11-19 13:38:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:23,660 INFO L225 Difference]: With dead ends: 121 [2021-11-19 13:38:23,661 INFO L226 Difference]: Without dead ends: 56 [2021-11-19 13:38:23,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:38:23,674 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:23,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:38:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-19 13:38:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-19 13:38:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 13:38:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-19 13:38:23,723 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-19 13:38:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:23,723 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-19 13:38:23,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 13:38:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-19 13:38:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:38:23,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:23,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:23,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:23,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:23,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 13:38:23,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:23,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655925964] [2021-11-19 13:38:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:23,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:23,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:23,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:40:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:40:17,731 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:41:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:41:06,929 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 13:41:06,930 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:41:06,933 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 13:41:06,935 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 13:41:06,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:07,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:07,139 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 13:41:07,143 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:41:07,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:41:07 BoogieIcfgContainer [2021-11-19 13:41:07,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:41:07,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:41:07,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:41:07,170 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:41:07,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:22" (3/4) ... [2021-11-19 13:41:07,173 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 13:41:07,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:41:07,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:41:07,215 INFO L158 Benchmark]: Toolchain (without parser) took 168064.10ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.6MB in the beginning and 39.9MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:41:07,216 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:41:07,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.90ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.4MB in the beginning and 43.0MB in the end (delta: -14.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.11ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 41.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,218 INFO L158 Benchmark]: Boogie Preprocessor took 41.47ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,219 INFO L158 Benchmark]: RCFGBuilder took 2728.91ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 21.2kB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,219 INFO L158 Benchmark]: TraceAbstraction took 164696.73ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 41.6MB in the end (delta: -2.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,220 INFO L158 Benchmark]: Witness Printer took 45.39ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 39.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:41:07,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.90ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.4MB in the beginning and 43.0MB in the end (delta: -14.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.11ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 41.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.47ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2728.91ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 21.2kB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * TraceAbstraction took 164696.73ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 41.6MB in the end (delta: -2.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Witness Printer took 45.39ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 39.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L48] reach_error() VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 164.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 114.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 13:41:07,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071521f7-9425-4f49-8cc4-888920f44294/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