./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:22:36,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:22:36,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:22:36,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:22:36,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:22:36,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:22:36,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:22:36,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:22:36,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:22:36,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:22:36,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:22:36,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:22:36,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:22:36,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:22:36,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:22:36,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:22:36,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:22:36,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:22:36,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:22:36,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:22:36,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:22:36,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:22:36,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:22:36,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:22:36,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:22:36,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:22:36,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:22:36,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:22:36,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:22:36,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:22:36,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:22:36,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:22:36,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:22:36,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:22:36,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:22:36,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:22:36,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:22:36,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:22:36,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:22:36,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:22:36,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:22:36,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:22:36,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:22:36,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:22:36,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:22:36,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:22:36,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:22:36,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:22:36,573 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:22:36,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:22:36,579 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:22:36,579 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:22:36,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:22:36,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:22:36,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:22:36,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:22:36,582 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:22:36,582 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:22:36,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:22:36,582 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:22:36,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:22:36,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:22:36,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:22:36,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:22:36,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:22:36,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:22:36,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:22:36,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:22:36,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:22:36,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:22:36,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:22:36,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:22:36,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:22:36,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:22:36,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:36,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:22:36,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:22:36,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:22:36,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:22:36,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:22:36,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:22:36,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:22:36,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:22:36,592 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-21 00:22:36,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:22:36,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:22:36,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:22:36,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:22:36,914 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:22:36,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:37,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/fb7adf5c1/6ee0686e21e54275a623ae11f5d47ae9/FLAG00e313110 [2021-11-21 00:22:37,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:22:37,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:37,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/fb7adf5c1/6ee0686e21e54275a623ae11f5d47ae9/FLAG00e313110 [2021-11-21 00:22:37,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/fb7adf5c1/6ee0686e21e54275a623ae11f5d47ae9 [2021-11-21 00:22:37,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:22:37,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:22:37,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:37,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:22:37,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:22:37,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:37" (1/1) ... [2021-11-21 00:22:37,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abd601e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:37, skipping insertion in model container [2021-11-21 00:22:37,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:37" (1/1) ... [2021-11-21 00:22:37,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:22:37,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:22:38,123 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-21 00:22:38,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:38,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:22:38,171 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-21 00:22:38,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:38,196 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:22:38,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38 WrapperNode [2021-11-21 00:22:38,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:38,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:38,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:22:38,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:22:38,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,240 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2021-11-21 00:22:38,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:38,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:22:38,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:22:38,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:22:38,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:22:38,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:22:38,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:22:38,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:22:38,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (1/1) ... [2021-11-21 00:22:38,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:22:38,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:22:38,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:22:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:22:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:22:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:22:38,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:22:38,410 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:22:38,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:22:38,565 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:22:38,618 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:22:38,618 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:22:38,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:38 BoogieIcfgContainer [2021-11-21 00:22:38,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:22:38,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:22:38,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:22:38,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:22:38,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:22:37" (1/3) ... [2021-11-21 00:22:38,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d32685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:38, skipping insertion in model container [2021-11-21 00:22:38,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:38" (2/3) ... [2021-11-21 00:22:38,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d32685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:38, skipping insertion in model container [2021-11-21 00:22:38,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:38" (3/3) ... [2021-11-21 00:22:38,633 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:38,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:22:38,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:22:38,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:22:38,746 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 [2021-11-21 00:22:38,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:22:38,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-11-21 00:22:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:22:38,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:38,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:22:38,793 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 88159642, now seen corresponding path program 1 times [2021-11-21 00:22:38,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:38,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835688664] [2021-11-21 00:22:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:38,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:22:38,995 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:22:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:22:39,089 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:22:39,091 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:22:39,093 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:22:39,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:22:39,100 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 00:22:39,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:22:39,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:22:39 BoogieIcfgContainer [2021-11-21 00:22:39,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:22:39,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:22:39,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:22:39,144 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:22:39,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:38" (3/4) ... [2021-11-21 00:22:39,153 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:22:39,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:22:39,155 INFO L158 Benchmark]: Toolchain (without parser) took 1253.75ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 41.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-21 00:22:39,157 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.4MB in the beginning and 66.4MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:22:39,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.34ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 70.1MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:22:39,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.29ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 68.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:22:39,163 INFO L158 Benchmark]: Boogie Preprocessor took 26.91ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.4MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:22:39,169 INFO L158 Benchmark]: RCFGBuilder took 352.15ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 55.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:22:39,171 INFO L158 Benchmark]: TraceAbstraction took 516.33ms. Allocated memory is still 94.4MB. Free memory was 55.5MB in the beginning and 42.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:22:39,172 INFO L158 Benchmark]: Witness Printer took 10.84ms. Allocated memory is still 94.4MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:22:39,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.4MB in the beginning and 66.4MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.34ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 70.1MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.29ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 68.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.91ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 67.4MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 352.15ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 55.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 516.33ms. Allocated memory is still 94.4MB. Free memory was 55.5MB in the beginning and 42.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 10.84ms. Allocated memory is still 94.4MB. Free memory is still 41.9MB. 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 37, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 52. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L48] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L48] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L50] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] RET, EXPR SqrtR(dd) [L50] r = SqrtR(dd) [L52] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L13] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2021-11-21 00:22:39,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/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_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:22:42,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:22:42,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:22:42,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:22:42,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:22:42,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:22:42,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:22:42,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:22:42,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:22:42,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:22:42,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:22:42,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:22:42,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:22:42,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:22:42,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:22:42,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:22:42,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:22:42,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:22:42,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:22:42,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:22:42,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:22:42,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:22:42,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:22:42,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:22:42,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:22:42,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:22:42,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:22:42,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:22:42,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:22:42,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:22:42,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:22:42,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:22:42,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:22:42,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:22:42,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:22:42,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:22:42,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:22:42,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:22:42,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:22:42,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:22:42,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:22:42,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:22:42,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:22:42,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:22:42,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:22:42,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:22:42,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:22:42,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:22:42,301 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:22:42,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:22:42,301 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:22:42,302 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:22:42,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:22:42,303 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:22:42,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:22:42,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:22:42,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:22:42,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:22:42,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:22:42,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:22:42,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:22:42,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:22:42,308 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:22:42,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:22:42,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:22:42,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:22:42,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:22:42,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:22:42,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:22:42,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:22:42,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:42,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:22:42,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:22:42,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:22:42,312 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:22:42,312 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:22:42,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:22:42,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:22:42,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:22:42,317 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-21 00:22:42,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:22:42,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:22:42,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:22:42,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:22:42,831 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:22:42,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:42,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/f11a92f3e/e57a8dd95029408596a300f2797535bb/FLAG9c09e9396 [2021-11-21 00:22:43,555 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:22:43,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:43,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/f11a92f3e/e57a8dd95029408596a300f2797535bb/FLAG9c09e9396 [2021-11-21 00:22:43,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/data/f11a92f3e/e57a8dd95029408596a300f2797535bb [2021-11-21 00:22:43,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:22:43,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:22:43,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:43,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:22:43,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:22:43,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:43" (1/1) ... [2021-11-21 00:22:43,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab19af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:43, skipping insertion in model container [2021-11-21 00:22:43,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:43" (1/1) ... [2021-11-21 00:22:43,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:22:43,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:22:44,126 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-21 00:22:44,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:44,168 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:22:44,184 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_2ff886d3-8372-40b7-adf0-87a277f10ec5/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-21 00:22:44,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:44,224 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:22:44,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44 WrapperNode [2021-11-21 00:22:44,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:44,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:44,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:22:44,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:22:44,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,302 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-21 00:22:44,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:44,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:22:44,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:22:44,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:22:44,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:22:44,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:22:44,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:22:44,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:22:44,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (1/1) ... [2021-11-21 00:22:44,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:22:44,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:22:44,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:22:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:22:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:22:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:22:44,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:22:44,570 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:22:44,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:22:53,400 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:22:53,408 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:22:53,408 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:22:53,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:53 BoogieIcfgContainer [2021-11-21 00:22:53,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:22:53,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:22:53,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:22:53,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:22:53,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:22:43" (1/3) ... [2021-11-21 00:22:53,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746753ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:53, skipping insertion in model container [2021-11-21 00:22:53,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:44" (2/3) ... [2021-11-21 00:22:53,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746753ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:53, skipping insertion in model container [2021-11-21 00:22:53,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:53" (3/3) ... [2021-11-21 00:22:53,420 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-21 00:22:53,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:22:53,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:22:53,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:22:53,498 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 [2021-11-21 00:22:53,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:22:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-21 00:22:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:22:53,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:53,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:22:53,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-11-21 00:22:53,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:22:53,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057947947] [2021-11-21 00:22:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:53,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:22:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:22:53,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:22:53,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:22:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:55,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:22:55,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:22:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:22:55,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:22:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:22:55,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:22:55,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057947947] [2021-11-21 00:22:55,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057947947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:55,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:55,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:22:55,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973952727] [2021-11-21 00:22:55,875 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:55,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:22:55,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:22:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:22:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:22:55,914 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-21 00:22:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:55,933 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-11-21 00:22:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:22:55,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-21 00:22:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:55,945 INFO L225 Difference]: With dead ends: 36 [2021-11-21 00:22:55,946 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 00:22:55,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:22:55,955 INFO L933 BasicCegarLoop]: 21 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, 21 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 [2021-11-21 00:22:55,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:22:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 00:22:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-21 00:22:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-11-21 00:22:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-21 00:22:55,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-21 00:22:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:55,995 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-21 00:22:55,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-21 00:22:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-21 00:22:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:22:55,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:55,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:22:56,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:22:56,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:22:56,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-11-21 00:22:56,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:22:56,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845056226] [2021-11-21 00:22:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:56,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:22:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:22:56,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:22:56,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:22:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:57,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:22:57,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:22:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:22:58,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:23:09,413 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from false [2021-11-21 00:23:11,490 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from true [2021-11-21 00:23:31,808 WARN L227 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 15 DAG size of output: 11 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:23:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:23:39,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:23:39,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845056226] [2021-11-21 00:23:39,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845056226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:39,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:39,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:23:39,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402395072] [2021-11-21 00:23:39,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:39,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:23:39,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:23:39,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:23:39,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=26, Unknown=3, NotChecked=10, Total=56 [2021-11-21 00:23:39,557 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-21 00:23:42,252 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-21 00:23:44,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:47,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:50,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:54,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:56,662 WARN L515 Checker$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 [] [2021-11-21 00:23:58,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:58,721 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-21 00:23:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:23:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 12 [2021-11-21 00:23:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:58,797 INFO L225 Difference]: With dead ends: 34 [2021-11-21 00:23:58,798 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 00:23:58,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2021-11-21 00:23:58,800 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:58,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 18 Unchecked, 17.1s Time] [2021-11-21 00:23:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 00:23:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 00:23:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-11-21 00:23:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-21 00:23:58,808 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-11-21 00:23:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:58,809 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-21 00:23:58,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-21 00:23:58,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-21 00:23:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:23:58,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:58,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:58,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:23:59,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:23:59,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:23:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-11-21 00:23:59,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:23:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317985540] [2021-11-21 00:23:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:59,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:23:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:23:59,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:23:59,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:24:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:02,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 00:24:02,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:22,918 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 00:24:27,993 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:24:33,054 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:24:38,117 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:24:46,258 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:24:56,302 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:01,405 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:06,492 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:11,598 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:16,702 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:21,791 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:26,860 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:51,290 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:25:56,436 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:01,481 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:06,561 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:15,938 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:21,020 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:33,649 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:38,721 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:43,823 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:48,856 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:26:58,878 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:03,971 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:09,011 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:12,710 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |ULTIMATE.start_SqrtR_~Input#1|))) (and (= .cse0 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse1)) (let ((.cse2 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))))) (or (and (not .cse2) (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|))) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (and (or (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|)) .cse2) (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 00:27:17,846 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:22,943 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:28,020 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:33,063 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:38,131 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:43,211 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:45,496 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2))) (and (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)) (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (= .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 00:27:51,597 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:27:57,226 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:03,285 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:09,059 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:15,037 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:20,915 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:23,401 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4))) (and (= (fp.div c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_SqrtR_#res#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.lt .cse2 |ULTIMATE.start_SqrtR_~linf~0#1|)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (not (fp.gt .cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 00:28:29,369 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:37,603 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:45,814 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:51,588 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:28:56,971 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:02,819 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:08,671 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:14,621 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:23,242 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:29,223 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:35,022 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:40,347 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:46,076 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:51,878 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:29:57,677 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:03,523 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:09,362 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:15,132 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:20,979 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:26,824 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:35,068 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:40,855 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:46,659 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:52,485 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:30:58,170 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:03,883 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:09,652 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:15,476 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:21,362 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:27,084 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:32,847 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:38,635 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:44,445 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:50,184 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:31:55,971 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:01,799 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:07,652 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:10,122 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse3 .cse7))) (let ((.cse4 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse5 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse4 .cse5) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse5)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from false [2021-11-21 00:32:12,420 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse3 .cse7))) (let ((.cse4 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse5 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse4 .cse5) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse5)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from true [2021-11-21 00:32:20,541 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:28,732 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:34,421 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:39,629 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:45,278 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:50,901 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:32:56,525 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:04,545 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:10,192 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:15,867 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:21,100 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:26,755 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:32,433 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:38,079 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:43,711 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:49,333 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:33:54,968 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:34:00,596 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:34:06,219 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:34:08,612 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse3 .cse5))) (or (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))))) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from false [2021-11-21 00:34:09,655 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-21 00:34:09,656 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317985540] [2021-11-21 00:34:09,656 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-21 00:34:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [351221600] [2021-11-21 00:34:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:09,657 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:34:09,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:34:09,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-21 00:34:09,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:34:09,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-21 00:34:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:34:14,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:14,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-21 00:34:14,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516187893] [2021-11-21 00:34:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:14,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:14,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:14,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:14,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:36:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:13,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 00:36:13,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:13,696 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-21 00:36:13,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:13,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-21 00:36:13,696 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-21 00:36:13,696 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-21 00:36:13,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:36:13,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:36:13,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-21 00:36:14,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:36:14,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff886d3-8372-40b7-adf0-87a277f10ec5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:14,328 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 00:36:14,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:36:14,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:36:14 BoogieIcfgContainer [2021-11-21 00:36:14,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:36:14,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:36:14,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:36:14,344 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:36:14,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:53" (3/4) ... [2021-11-21 00:36:14,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:36:14,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:36:14,348 INFO L158 Benchmark]: Toolchain (without parser) took 810431.25ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 42.6MB in the beginning and 53.4MB in the end (delta: -10.8MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-11-21 00:36:14,348 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:14,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.52ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 46.4MB in the end (delta: -3.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-21 00:36:14,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.11ms. Allocated memory is still 62.9MB. Free memory was 46.2MB in the beginning and 44.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:36:14,349 INFO L158 Benchmark]: Boogie Preprocessor took 73.10ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 43.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:14,350 INFO L158 Benchmark]: RCFGBuilder took 9031.62ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 33.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:36:14,350 INFO L158 Benchmark]: TraceAbstraction took 800930.37ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 53.4MB in the end (delta: -20.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:14,350 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 75.5MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:36:14,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.52ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 46.4MB in the end (delta: -3.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.11ms. Allocated memory is still 62.9MB. Free memory was 46.2MB in the beginning and 44.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.10ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 43.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 9031.62ms. Allocated memory is still 62.9MB. Free memory was 43.1MB in the beginning and 33.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 800930.37ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 53.4MB in the end (delta: -20.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 75.5MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L48] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L48] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L50] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] RET, EXPR SqrtR(dd) [L50] r = SqrtR(dd) [L52] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 800.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 16.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 18 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 648.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN