./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl --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 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:57:17,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:57:17,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:57:17,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:57:17,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:57:17,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:57:17,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:57:17,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:57:17,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:57:17,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:57:17,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:57:17,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:57:17,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:57:17,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:57:17,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:57:17,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:57:17,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:57:17,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:57:17,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:57:17,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:57:17,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:57:17,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:57:17,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:57:17,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:57:17,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:57:17,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:57:17,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:57:17,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:57:17,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:57:17,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:57:17,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:57:17,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:57:17,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:57:17,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:57:17,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:57:17,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:57:17,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:57:17,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:57:17,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:57:17,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:57:17,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:57:17,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:57:17,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:57:17,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:57:17,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:57:17,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:57:17,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:57:17,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:57:17,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:57:17,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:57:17,830 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:57:17,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:57:17,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:57:17,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:57:17,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:57:17,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:57:17,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:57:17,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:57:17,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:57:17,833 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:57:17,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:57:17,834 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:57:17,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:57:17,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:57:17,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:57:17,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:57:17,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:57:17,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:57:17,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:57:17,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:57:17,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:57:17,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:57:17,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:57:17,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:57:17,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:17,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:57:17,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:57:17,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:57:17,840 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:57:17,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:57:17,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:57:17,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:57:17,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:57:17,842 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_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db [2021-11-23 16:57:18,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:57:18,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:57:18,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:57:18,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:57:18,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:57:18,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-23 16:57:18,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/e1d68702c/093d1c04b23e43e08a1eec242cfc9c14/FLAG62fad5090 [2021-11-23 16:57:18,736 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:57:18,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-23 16:57:18,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/e1d68702c/093d1c04b23e43e08a1eec242cfc9c14/FLAG62fad5090 [2021-11-23 16:57:19,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/e1d68702c/093d1c04b23e43e08a1eec242cfc9c14 [2021-11-23 16:57:19,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:57:19,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:57:19,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:19,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:57:19,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:57:19,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222768db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19, skipping insertion in model container [2021-11-23 16:57:19,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:57:19,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:57:19,351 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-23 16:57:19,356 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-23 16:57:19,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:19,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:57:19,437 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-23 16:57:19,439 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-23 16:57:19,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:19,502 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:57:19,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19 WrapperNode [2021-11-23 16:57:19,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:19,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:19,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:57:19,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:57:19,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,581 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-23 16:57:19,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:19,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:57:19,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:57:19,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:57:19,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:57:19,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:57:19,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:57:19,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:57:19,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:19" (1/1) ... [2021-11-23 16:57:19,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:57:19,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:57:19,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:57:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:57:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 16:57:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 16:57:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:57:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:57:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:57:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:57:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:57:19,914 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:57:19,916 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:57:20,194 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:57:20,252 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:57:20,257 INFO L158 Benchmark]: Toolchain (without parser) took 1188.66ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 59.0MB in the beginning and 54.4MB in the end (delta: 4.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-23 16:57:20,258 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:20,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.69ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 58.8MB in the beginning and 71.9MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:57:20,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.57ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 69.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:57:20,261 INFO L158 Benchmark]: Boogie Preprocessor took 93.83ms. Allocated memory is still 98.6MB. Free memory was 69.9MB in the beginning and 68.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:20,262 INFO L158 Benchmark]: RCFGBuilder took 574.49ms. Allocated memory is still 98.6MB. Free memory was 68.5MB in the beginning and 54.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:57:20,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.69ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 58.8MB in the beginning and 71.9MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.57ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 69.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.83ms. Allocated memory is still 98.6MB. Free memory was 69.9MB in the beginning and 68.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.49ms. Allocated memory is still 98.6MB. Free memory was 68.5MB in the beginning and 54.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:57:20,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/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_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl --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 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:57:23,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:57:23,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:57:23,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:57:23,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:57:23,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:57:23,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:57:23,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:57:23,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:57:23,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:57:23,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:57:23,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:57:23,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:57:23,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:57:23,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:57:23,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:57:23,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:57:23,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:57:23,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:57:23,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:57:23,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:57:23,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:57:23,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:57:23,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:57:23,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:57:23,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:57:23,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:57:23,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:57:23,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:57:23,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:57:23,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:57:23,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:57:23,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:57:23,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:57:23,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:57:23,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:57:23,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:57:23,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:57:23,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:57:23,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:57:23,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:57:23,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:57:23,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:57:23,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:57:23,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:57:23,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:57:23,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:57:23,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:57:23,225 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:57:23,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:57:23,226 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:57:23,227 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:57:23,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:57:23,228 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:57:23,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:57:23,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:57:23,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:57:23,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:57:23,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:57:23,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:57:23,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:57:23,231 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:57:23,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:57:23,232 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:57:23,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:57:23,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:57:23,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:57:23,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:57:23,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:57:23,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:57:23,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:57:23,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:23,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:57:23,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:57:23,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:57:23,236 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:57:23,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:57:23,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:57:23,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:57:23,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:57:23,237 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_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c4c867e245be659b2db84171c62e45b03155ac4269b1a7d8c363c8f991a60db [2021-11-23 16:57:23,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:57:23,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:57:23,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:57:23,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:57:23,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:57:23,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-23 16:57:23,828 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/298773305/1ac3161b99ba4e0081ef110a0c1571ea/FLAG62da71f00 [2021-11-23 16:57:24,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:57:24,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c [2021-11-23 16:57:24,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/298773305/1ac3161b99ba4e0081ef110a0c1571ea/FLAG62da71f00 [2021-11-23 16:57:24,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/data/298773305/1ac3161b99ba4e0081ef110a0c1571ea [2021-11-23 16:57:24,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:57:24,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:57:24,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:24,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:57:24,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:57:24,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:24" (1/1) ... [2021-11-23 16:57:24,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0a2249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:24, skipping insertion in model container [2021-11-23 16:57:24,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:24" (1/1) ... [2021-11-23 16:57:24,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:57:24,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:57:25,083 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-23 16:57:25,089 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-23 16:57:25,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:25,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:57:25,210 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[1997,2010] [2021-11-23 16:57:25,221 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_2872dc3c-9c1d-4e7a-828e-127da590b185/sv-benchmarks/c/combinations/square_6+soft_float_5a.c.cil.c[2366,2379] [2021-11-23 16:57:25,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:25,277 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:57:25,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25 WrapperNode [2021-11-23 16:57:25,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:25,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:25,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:57:25,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:57:25,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,327 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-23 16:57:25,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:25,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:57:25,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:57:25,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:57:25,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:57:25,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:57:25,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:57:25,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:57:25,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (1/1) ... [2021-11-23 16:57:25,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:25,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:57:25,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:57:25,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:57:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:57:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:57:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 16:57:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 16:57:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:57:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:57:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:57:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:57:25,627 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:57:25,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:57:28,232 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:57:28,242 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:57:28,242 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 16:57:28,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:57:28 BoogieIcfgContainer [2021-11-23 16:57:28,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:57:28,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:57:28,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:57:28,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:57:28,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:57:24" (1/3) ... [2021-11-23 16:57:28,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebdd808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:57:28, skipping insertion in model container [2021-11-23 16:57:28,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:25" (2/3) ... [2021-11-23 16:57:28,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebdd808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:57:28, skipping insertion in model container [2021-11-23 16:57:28,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:57:28" (3/3) ... [2021-11-23 16:57:28,255 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_5a.c.cil.c [2021-11-23 16:57:28,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:57:28,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:57:28,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:57:28,334 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 [2021-11-23 16:57:28,335 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:57:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 16:57:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 16:57:28,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:57:28,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:57:28,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:57:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:57:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-23 16:57:28,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:57:28,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63778826] [2021-11-23 16:57:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:57:28,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:57:28,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:57:28,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:57:28,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:57:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:57:29,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 16:57:29,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:57:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:57:29,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:57:29,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:57:29,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63778826] [2021-11-23 16:57:29,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63778826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:57:29,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:57:29,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:57:29,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962434344] [2021-11-23 16:57:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:57:29,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 16:57:29,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:57:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 16:57:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:57:29,109 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:57:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:57:29,144 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-23 16:57:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 16:57:29,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 16:57:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:57:29,157 INFO L225 Difference]: With dead ends: 117 [2021-11-23 16:57:29,157 INFO L226 Difference]: Without dead ends: 52 [2021-11-23 16:57:29,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:57:29,166 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-11-23 16:57:29,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:57:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-23 16:57:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-23 16:57:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 16:57:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-23 16:57:29,227 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-23 16:57:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:57:29,228 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-23 16:57:29,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:57:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-23 16:57:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 16:57:29,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:57:29,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:57:29,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:57:29,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:57:29,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:57:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:57:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-23 16:57:29,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:57:29,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621277967] [2021-11-23 16:57:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:57:29,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:57:29,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:57:29,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:57:29,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2872dc3c-9c1d-4e7a-828e-127da590b185/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:10:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:10:55,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:10:55,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:10,490 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false