./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:41,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:41,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:41,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:41,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:41,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:41,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:41,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:41,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:41,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:41,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:41,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:41,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:41,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:41,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:41,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:41,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:41,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:41,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:41,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:41,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:41,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:41,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:41,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:41,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:41,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:41,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:41,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:41,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:41,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:41,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:41,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:41,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:41,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:41,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:41,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:41,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:41,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:41,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:41,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:41,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:41,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:21:41,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:41,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:41,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:41,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:41,520 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:41,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:41,521 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:41,521 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:21:41,521 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:41,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:41,521 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:21:41,522 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:21:41,522 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:41,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:21:41,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:21:41,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:21:41,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:41,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:21:41,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:41,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:41,525 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:21:41,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:41,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:41,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:41,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:41,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:41,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:41,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:41,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:41,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:41,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:21:41,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:21:41,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:41,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:41,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:41,527 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-11-19 14:21:41,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:41,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:41,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:41,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:41,825 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:41,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-19 14:21:41,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/bf5ad183a/6c442324eee74602bf6899915292a1a9/FLAG2dd26967d [2021-11-19 14:21:42,350 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:42,351 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-19 14:21:42,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/bf5ad183a/6c442324eee74602bf6899915292a1a9/FLAG2dd26967d [2021-11-19 14:21:42,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/bf5ad183a/6c442324eee74602bf6899915292a1a9 [2021-11-19 14:21:42,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:42,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:42,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:42,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:42,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:42,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:42" (1/1) ... [2021-11-19 14:21:42,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3c94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:42, skipping insertion in model container [2021-11-19 14:21:42,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:42" (1/1) ... [2021-11-19 14:21:42,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:42,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:42,986 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-19 14:21:43,012 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-19 14:21:43,017 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-19 14:21:43,019 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:43,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:21:43,065 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-19 14:21:43,077 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-19 14:21:43,085 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-19 14:21:43,101 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:43,117 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:21:43,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43 WrapperNode [2021-11-19 14:21:43,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:43,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:43,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:21:43,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:21:43,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,167 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2021-11-19 14:21:43,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:43,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:21:43,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:21:43,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:21:43,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:21:43,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:21:43,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:21:43,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:21:43,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (1/1) ... [2021-11-19 14:21:43,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:43,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:21:43,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:21:43,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:21:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:21:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:21:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:21:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:21:43,347 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:21:43,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:21:43,437 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:21:43,472 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:21:43,472 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:21:43,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:43 BoogieIcfgContainer [2021-11-19 14:21:43,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:21:43,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:21:43,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:21:43,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:21:43,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:21:42" (1/3) ... [2021-11-19 14:21:43,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444e5e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:43, skipping insertion in model container [2021-11-19 14:21:43,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:43" (2/3) ... [2021-11-19 14:21:43,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444e5e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:43, skipping insertion in model container [2021-11-19 14:21:43,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:43" (3/3) ... [2021-11-19 14:21:43,484 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-11-19 14:21:43,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:21:43,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:21:43,549 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:21:43,565 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 14:21:43,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:21:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 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 14:21:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:21:43,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:43,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:21:43,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 89758, now seen corresponding path program 1 times [2021-11-19 14:21:43,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:21:43,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754065853] [2021-11-19 14:21:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:43,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:21:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:21:43,738 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:21:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:21:43,765 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:21:43,767 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:21:43,768 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-19 14:21:43,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-19 14:21:43,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-19 14:21:43,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:21:43,776 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:21:43,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:21:43,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:21:43 BoogieIcfgContainer [2021-11-19 14:21:43,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:21:43,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:21:43,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:21:43,796 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:21:43,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:43" (3/4) ... [2021-11-19 14:21:43,800 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:21:43,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:21:43,801 INFO L158 Benchmark]: Toolchain (without parser) took 1057.69ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 98.2MB in the end (delta: 17.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-11-19 14:21:43,802 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:43,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.83ms. Allocated memory is still 151.0MB. Free memory was 115.9MB in the beginning and 123.6MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:21:43,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.02ms. Allocated memory is still 151.0MB. Free memory was 123.6MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:21:43,804 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 151.0MB. Free memory was 122.1MB in the beginning and 121.3MB in the end (delta: 774.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:43,805 INFO L158 Benchmark]: RCFGBuilder took 268.21ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 111.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:21:43,805 INFO L158 Benchmark]: TraceAbstraction took 318.21ms. Allocated memory is still 151.0MB. Free memory was 110.8MB in the beginning and 98.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:21:43,806 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 151.0MB. Free memory was 98.6MB in the beginning and 98.2MB in the end (delta: 355.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:43,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.83ms. Allocated memory is still 151.0MB. Free memory was 115.9MB in the beginning and 123.6MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.02ms. Allocated memory is still 151.0MB. Free memory was 123.6MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.56ms. Allocated memory is still 151.0MB. Free memory was 122.1MB in the beginning and 121.3MB in the end (delta: 774.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 268.21ms. Allocated memory is still 151.0MB. Free memory was 121.3MB in the beginning and 111.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 318.21ms. Allocated memory is still 151.0MB. Free memory was 110.8MB in the beginning and 98.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 151.0MB. Free memory was 98.6MB in the beginning and 98.2MB in the end (delta: 355.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: 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 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L49] CALL bug(f) [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; VAL [\old(min)=49, min=49] [L21] COND TRUE !(ulpdiff == 0x1p-126f) VAL [\old(min)=49, min=49] [L21] reach_error() VAL [\old(min)=49, min=49] - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 42]: 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 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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 14:21:43,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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 ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:46,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:46,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:46,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:46,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:46,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:46,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:46,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:46,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:46,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:46,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:46,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:46,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:46,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:46,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:46,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:46,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:46,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:46,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:46,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:46,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:46,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:46,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:46,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:46,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:46,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:46,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:46,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:46,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:46,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:46,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:46,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:46,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:46,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:46,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:46,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:46,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:46,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:46,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:46,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:46,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:46,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:21:46,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:46,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:46,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:46,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:46,467 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:46,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:46,468 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:46,468 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:46,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:46,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:46,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:46,471 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:21:46,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:21:46,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:46,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:46,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:46,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:46,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:46,473 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:21:46,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:21:46,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:21:46,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:46,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:46,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:46,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:46,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:21:46,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:46,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:46,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:46,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:46,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:46,476 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:21:46,476 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:21:46,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:46,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:46,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:46,477 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebbeb933faa53c0420039d774ec4b6190cacf1becebc5ed29363e09aaa5dc31e [2021-11-19 14:21:46,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:46,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:46,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:46,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:46,913 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:46,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-19 14:21:46,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/f163465a1/9f2f294ced5e4deab42754c3c27aa386/FLAG99e7512af [2021-11-19 14:21:47,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:47,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-11-19 14:21:47,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/f163465a1/9f2f294ced5e4deab42754c3c27aa386/FLAG99e7512af [2021-11-19 14:21:47,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/data/f163465a1/9f2f294ced5e4deab42754c3c27aa386 [2021-11-19 14:21:47,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:47,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:47,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:47,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:47,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:47,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:47" (1/1) ... [2021-11-19 14:21:47,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17180a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:47, skipping insertion in model container [2021-11-19 14:21:47,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:47" (1/1) ... [2021-11-19 14:21:47,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:47,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:48,168 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-19 14:21:48,179 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-19 14:21:48,187 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-19 14:21:48,190 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:48,204 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:21:48,279 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-11-19 14:21:48,284 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-11-19 14:21:48,287 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_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-11-19 14:21:48,289 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:48,305 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:21:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48 WrapperNode [2021-11-19 14:21:48,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:48,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:48,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:21:48,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:21:48,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,346 INFO L137 Inliner]: procedures = 19, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2021-11-19 14:21:48,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:48,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:21:48,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:21:48,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:21:48,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:21:48,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:21:48,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:21:48,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:21:48,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (1/1) ... [2021-11-19 14:21:48,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:48,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:21:48,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:21:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:21:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:21:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:21:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:21:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:21:48,593 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:21:48,595 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:21:50,029 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:21:50,037 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:21:50,037 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:21:50,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:50 BoogieIcfgContainer [2021-11-19 14:21:50,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:21:50,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:21:50,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:21:50,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:21:50,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:21:47" (1/3) ... [2021-11-19 14:21:50,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad0dcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:50, skipping insertion in model container [2021-11-19 14:21:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:48" (2/3) ... [2021-11-19 14:21:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad0dcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:50, skipping insertion in model container [2021-11-19 14:21:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:50" (3/3) ... [2021-11-19 14:21:50,049 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-11-19 14:21:50,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:21:50,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:21:50,161 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:21:50,169 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 14:21:50,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:21:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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 14:21:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:21:50,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:50,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:21:50,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-19 14:21:50,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:50,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862400396] [2021-11-19 14:21:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:50,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:50,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:50,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:21:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:21:50,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:50,537 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 14:21:50,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:50,573 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 14:21:50,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:50,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862400396] [2021-11-19 14:21:50,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862400396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:50,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:50,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:21:50,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550253453] [2021-11-19 14:21:50,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:50,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:21:50,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:21:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:21:50,625 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:21:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:50,642 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-11-19 14:21:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:21:50,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-11-19 14:21:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:50,654 INFO L225 Difference]: With dead ends: 43 [2021-11-19 14:21:50,654 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 14:21:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 14:21:50,663 INFO L933 BasicCegarLoop]: 22 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, 22 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 14:21:50,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:21:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 14:21:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 14:21:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 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 14:21:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-11-19 14:21:50,702 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 6 [2021-11-19 14:21:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:50,702 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-11-19 14:21:50,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:21:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-11-19 14:21:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:21:50,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:50,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:21:50,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:50,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:50,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-19 14:21:50,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:50,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447009249] [2021-11-19 14:21:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:50,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:50,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:50,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:50,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:21:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:21:51,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:51,826 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 14:21:51,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:53,613 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 14:21:53,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:53,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447009249] [2021-11-19 14:21:53,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447009249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:53,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:53,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:21:53,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167510468] [2021-11-19 14:21:53,615 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:53,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:21:53,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:21:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:21:53,618 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 14:21:56,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:58,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:59,229 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-11-19 14:21:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:21:59,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 6 [2021-11-19 14:21:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:59,235 INFO L225 Difference]: With dead ends: 19 [2021-11-19 14:21:59,235 INFO L226 Difference]: Without dead ends: 17 [2021-11-19 14:21:59,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:21:59,237 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:59,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 18 Unchecked, 5.4s Time] [2021-11-19 14:21:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-19 14:21:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-19 14:21:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 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 14:21:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-11-19 14:21:59,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2021-11-19 14:21:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:59,251 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-11-19 14:21:59,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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 14:21:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-11-19 14:21:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:21:59,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:59,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:59,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:59,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:59,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1928169781, now seen corresponding path program 1 times [2021-11-19 14:21:59,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:59,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696642974] [2021-11-19 14:21:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:59,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:59,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:59,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:59,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:21:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:59,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:21:59,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:05,476 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_bugBrokenOut_~min#1| (_ FloatingPoint 8 24))) (and (fp.eq |ULTIMATE.start_bugBrokenOut_~min#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= |c_ULTIMATE.start_bugBrokenOut_~ulpdiff~1#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_bugBrokenOut_~min#1|) ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 14:22:06,848 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 14:22:06,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:00,293 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 14:23:00,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:00,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696642974] [2021-11-19 14:23:00,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696642974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:00,294 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:00,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:23:00,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036020620] [2021-11-19 14:23:00,295 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:00,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:23:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:23:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=4, NotChecked=10, Total=56 [2021-11-19 14:23:00,297 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 14:23:02,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:04,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:06,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:08,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:10,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:12,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:13,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:32,377 WARN L227 SmtUtils]: Spent 17.14s on a formula simplification. DAG size of input: 25 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:23:34,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:36,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:38,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:38,704 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-11-19 14:23:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:23:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 10 [2021-11-19 14:23:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:38,732 INFO L225 Difference]: With dead ends: 17 [2021-11-19 14:23:38,732 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 14:23:38,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=4, NotChecked=12, Total=72 [2021-11-19 14:23:38,734 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:38,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 7 Unknown, 14 Unchecked, 19.9s Time] [2021-11-19 14:23:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 14:23:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 14:23:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 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 14:23:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-11-19 14:23:38,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2021-11-19 14:23:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-11-19 14:23:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 14:23:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-11-19 14:23:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:23:38,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:38,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:38,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:38,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:38,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1162826544, now seen corresponding path program 1 times [2021-11-19 14:23:38,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:38,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808735402] [2021-11-19 14:23:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:38,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:38,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:38,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:23:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:39,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:23:39,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:40,022 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 14:23:40,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:45,679 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 14:23:45,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:45,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808735402] [2021-11-19 14:23:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808735402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:45,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:45,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:23:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029060191] [2021-11-19 14:23:45,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:23:45,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:23:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:45,683 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 14:23:49,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:49,846 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-19 14:23:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:23:49,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 14 [2021-11-19 14:23:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:49,846 INFO L225 Difference]: With dead ends: 15 [2021-11-19 14:23:49,847 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:23:49,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:23:49,849 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:49,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 1 Unknown, 8 Unchecked, 3.9s Time] [2021-11-19 14:23:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:23:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:23:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 14:23:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:23:49,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-11-19 14:23:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:49,852 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:23:49,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 14:23:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:23:49,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:23:49,855 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-19 14:23:49,856 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-19 14:23:49,856 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-19 14:23:49,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:50,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:50,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 14:23:50,089 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-11-19 14:23:50,089 INFO L858 garLoopResultBuilder]: For program point L27-2(line 27) no Hoare annotation was computed. [2021-11-19 14:23:50,089 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-11-19 14:23:50,089 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-19 14:23:50,089 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 14:23:50,090 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-11-19 14:23:50,090 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 14:23:50,090 INFO L854 garLoopResultBuilder]: At program point L32-3(lines 26 35) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-19 14:23:50,090 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 14:23:50,090 INFO L861 garLoopResultBuilder]: At program point L57(lines 47 58) the Hoare annotation is: true [2021-11-19 14:23:50,091 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-11-19 14:23:50,091 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 14:23:50,091 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-19 14:23:50,091 INFO L858 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-11-19 14:23:50,091 INFO L854 garLoopResultBuilder]: At program point L21-3(lines 16 24) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-11-19 14:23:50,092 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-19 14:23:50,092 INFO L858 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2021-11-19 14:23:50,092 INFO L858 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-11-19 14:23:50,092 INFO L858 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-11-19 14:23:50,092 INFO L861 garLoopResultBuilder]: At program point L42-3(lines 37 45) the Hoare annotation is: true [2021-11-19 14:23:50,093 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-19 14:23:50,093 INFO L858 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2021-11-19 14:23:50,093 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-11-19 14:23:50,096 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-19 14:23:50,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:23:50,105 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,109 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,110 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,110 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:23:50 BoogieIcfgContainer [2021-11-19 14:23:50,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:23:50,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:23:50,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:23:50,112 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:23:50,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:50" (3/4) ... [2021-11-19 14:23:50,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 14:23:50,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-19 14:23:50,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 14:23:50,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 14:23:50,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 14:23:50,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:23:50,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:23:50,158 INFO L158 Benchmark]: Toolchain (without parser) took 122215.17ms. Allocated memory is still 79.7MB. Free memory was 57.1MB in the beginning and 47.4MB in the end (delta: 9.7MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-11-19 14:23:50,158 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:23:50,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.51ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 61.1MB in the end (delta: -4.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:23:50,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.60ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 59.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:23:50,160 INFO L158 Benchmark]: Boogie Preprocessor took 29.94ms. Allocated memory is still 79.7MB. Free memory was 59.3MB in the beginning and 58.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:23:50,160 INFO L158 Benchmark]: RCFGBuilder took 1661.85ms. Allocated memory is still 79.7MB. Free memory was 58.2MB in the beginning and 49.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:23:50,161 INFO L158 Benchmark]: TraceAbstraction took 120069.31ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 50.0MB in the end (delta: -1.2MB). Peak memory consumption was 348.3kB. Max. memory is 16.1GB. [2021-11-19 14:23:50,161 INFO L158 Benchmark]: Witness Printer took 46.00ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 47.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:23:50,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.51ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 61.1MB in the end (delta: -4.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.60ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 59.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.94ms. Allocated memory is still 79.7MB. Free memory was 59.3MB in the beginning and 58.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1661.85ms. Allocated memory is still 79.7MB. Free memory was 58.2MB in the beginning and 49.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 120069.31ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 50.0MB in the end (delta: -1.2MB). Peak memory consumption was 348.3kB. Max. memory is 16.1GB. * Witness Printer took 46.00ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 47.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 119.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 48.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 28.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 40 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 47 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 48.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 69.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 21 QuantifiedInterpolants, 619 SizeOfPredicates, 15 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2021-11-19 14:23:50,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 26]: Loop Invariant [2021-11-19 14:23:50,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 14:23:50,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 14:23:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e45cf41-b3d0-47c1-83b6-7bab3cc97c42/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 Result: TRUE