./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:43:46,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:43:46,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:43:46,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:43:46,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:43:46,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:43:46,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:43:46,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:43:46,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:43:46,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:43:46,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:43:46,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:43:46,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:43:46,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:43:46,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:43:46,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:43:46,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:43:46,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:43:46,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:43:46,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:43:46,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:43:46,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:43:46,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:43:46,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:43:46,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:43:46,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:43:46,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:43:46,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:43:46,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:43:46,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:43:46,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:43:46,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:43:46,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:43:46,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:43:46,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:43:46,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:43:46,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:43:46,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:43:46,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:43:46,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:43:46,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:43:46,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:43:46,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:43:46,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:43:46,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:43:46,508 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:43:46,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:43:46,508 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:43:46,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:43:46,509 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:43:46,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:43:46,516 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:43:46,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:43:46,517 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:43:46,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:43:46,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:43:46,518 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:43:46,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:43:46,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:43:46,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:43:46,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:43:46,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:43:46,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:43:46,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:43:46,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:43:46,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:43:46,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:43:46,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:43:46,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:43:46,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:43:46,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:43:46,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:43:46,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:46,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:43:46,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:43:46,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:43:46,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:43:46,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:43:46,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:43:46,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:43:46,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:43:46,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-11-03 03:43:46,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:43:46,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:43:46,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:43:46,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:43:46,852 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:43:46,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-11-03 03:43:46,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/4eef9a6e1/b5e0f12f711c431ebcb5c0ace20eec1f/FLAG8b54ce6f7 [2021-11-03 03:43:47,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:43:47,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-11-03 03:43:47,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/4eef9a6e1/b5e0f12f711c431ebcb5c0ace20eec1f/FLAG8b54ce6f7 [2021-11-03 03:43:47,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/4eef9a6e1/b5e0f12f711c431ebcb5c0ace20eec1f [2021-11-03 03:43:47,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:43:47,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:43:47,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:47,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:43:47,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:43:47,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:47" (1/1) ... [2021-11-03 03:43:47,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13490b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:47, skipping insertion in model container [2021-11-03 03:43:47,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:47" (1/1) ... [2021-11-03 03:43:47,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:43:47,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:43:48,055 WARN L228 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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-11-03 03:43:48,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:48,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:43:48,099 WARN L228 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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-11-03 03:43:48,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:48,126 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:43:48,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48 WrapperNode [2021-11-03 03:43:48,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:48,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:48,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:43:48,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:43:48,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:48,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:43:48,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:43:48,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:43:48,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:43:48,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:43:48,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:43:48,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:43:48,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (1/1) ... [2021-11-03 03:43:48,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:48,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:43:48,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:43:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:43:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:43:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:43:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:43:48,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:43:48,816 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 03:43:48,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:48 BoogieIcfgContainer [2021-11-03 03:43:48,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:43:48,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:43:48,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:43:48,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:43:48,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:43:47" (1/3) ... [2021-11-03 03:43:48,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd9c68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:48, skipping insertion in model container [2021-11-03 03:43:48,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:48" (2/3) ... [2021-11-03 03:43:48,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd9c68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:48, skipping insertion in model container [2021-11-03 03:43:48,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:48" (3/3) ... [2021-11-03 03:43:48,832 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-11-03 03:43:48,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:43:48,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:43:48,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:43:48,890 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 [2021-11-03 03:43:48,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:43:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:43:48,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:48,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:43:48,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:43:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash 70827, now seen corresponding path program 1 times [2021-11-03 03:43:48,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:48,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142381234] [2021-11-03 03:43:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:48,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:43:49,077 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:43:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:43:49,146 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:43:49,149 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:43:49,150 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:43:49,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:43:49,160 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 03:43:49,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:43:49,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:43:49 BoogieIcfgContainer [2021-11-03 03:43:49,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:43:49,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:43:49,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:43:49,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:43:49,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:48" (3/4) ... [2021-11-03 03:43:49,200 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:43:49,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:43:49,203 INFO L168 Benchmark]: Toolchain (without parser) took 1348.99 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.0 MB in the beginning and 95.4 MB in the end (delta: -24.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:49,204 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:49,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.49 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 78.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:43:49,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:43:49,209 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 76.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:49,210 INFO L168 Benchmark]: RCFGBuilder took 630.28 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 56.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 03:43:49,216 INFO L168 Benchmark]: TraceAbstraction took 366.92 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 96.1 MB in the end (delta: -40.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:49,217 INFO L168 Benchmark]: Witness Printer took 6.25 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 95.4 MB in the end (delta: 656.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:49,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.49 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 78.8 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 76.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 630.28 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 56.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366.92 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 96.1 MB in the end (delta: -40.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.25 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 95.4 MB in the end (delta: 656.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 61. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 03:43:49,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:43:51,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:43:51,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:43:51,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:43:51,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:43:51,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:43:51,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:43:51,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:43:51,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:43:51,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:43:51,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:43:51,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:43:51,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:43:51,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:43:51,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:43:51,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:43:51,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:43:51,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:43:51,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:43:51,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:43:51,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:43:51,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:43:51,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:43:51,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:43:51,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:43:51,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:43:51,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:43:51,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:43:51,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:43:51,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:43:51,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:43:51,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:43:51,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:43:51,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:43:51,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:43:51,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:43:51,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:43:51,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:43:51,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:43:51,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:43:51,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:43:51,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:43:51,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:43:51,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:43:51,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:43:51,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:43:51,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:43:51,856 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:43:51,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:43:51,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:43:51,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:43:51,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:43:51,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:43:51,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:43:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:43:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:43:51,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:43:51,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:43:51,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:43:51,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:43:51,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:43:51,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:43:51,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:43:51,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:43:51,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:43:51,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:43:51,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:43:51,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:43:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:51,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:43:51,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:43:51,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:43:51,864 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:43:51,864 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:51,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:43:51,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:43:51,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:43:51,865 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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-11-03 03:43:52,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:43:52,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:43:52,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:43:52,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:43:52,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:43:52,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-11-03 03:43:52,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/e1f12422f/d2a96be70e7e4988b048670e36c5e7d2/FLAGb856d4f28 [2021-11-03 03:43:52,790 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:43:52,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-11-03 03:43:52,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/e1f12422f/d2a96be70e7e4988b048670e36c5e7d2/FLAGb856d4f28 [2021-11-03 03:43:53,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/data/e1f12422f/d2a96be70e7e4988b048670e36c5e7d2 [2021-11-03 03:43:53,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:43:53,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:43:53,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:53,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:43:53,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:43:53,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0abadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53, skipping insertion in model container [2021-11-03 03:43:53,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:43:53,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:43:53,377 WARN L228 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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-11-03 03:43:53,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:53,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:43:53,475 WARN L228 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_22dc17b1-987f-4653-bbc4-b33ae981b0d7/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-11-03 03:43:53,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:53,558 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:43:53,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53 WrapperNode [2021-11-03 03:43:53,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:53,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:53,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:43:53,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:43:53,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:53,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:43:53,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:43:53,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:43:53,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:43:53,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:43:53,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:43:53,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:43:53,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (1/1) ... [2021-11-03 03:43:53,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:53,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:53,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:43:53,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:43:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:43:53,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:43:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:43:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:44:00,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:44:00,400 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 03:44:00,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:00 BoogieIcfgContainer [2021-11-03 03:44:00,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:44:00,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:44:00,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:44:00,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:44:00,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:43:53" (1/3) ... [2021-11-03 03:44:00,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ec627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:00, skipping insertion in model container [2021-11-03 03:44:00,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:53" (2/3) ... [2021-11-03 03:44:00,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ec627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:00, skipping insertion in model container [2021-11-03 03:44:00,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:00" (3/3) ... [2021-11-03 03:44:00,411 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-11-03 03:44:00,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:44:00,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:44:00,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:44:00,467 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 [2021-11-03 03:44:00,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:44:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:44:00,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:00,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:00,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:44:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-11-03 03:44:00,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:00,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700998429] [2021-11-03 03:44:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:00,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:00,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:00,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:44:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:01,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:44:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:02,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:02,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:02,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700998429] [2021-11-03 03:44:02,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700998429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:02,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:02,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:44:02,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594461100] [2021-11-03 03:44:02,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:44:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:44:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:44:02,248 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:02,275 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-03 03:44:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:44:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:44:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:02,291 INFO L225 Difference]: With dead ends: 25 [2021-11-03 03:44:02,304 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 03:44:02,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:44:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 03:44:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 03:44:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-11-03 03:44:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-03 03:44:02,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-11-03 03:44:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:02,364 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-03 03:44:02,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-03 03:44:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:44:02,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:02,366 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:02,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:02,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:02,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:44:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-11-03 03:44:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:02,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689272122] [2021-11-03 03:44:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:02,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:02,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:02,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:44:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:44:03,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:44:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:44:05,495 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-03 03:44:05,496 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:44:05,498 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:44:05,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 03:44:05,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:05,703 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 03:44:05,705 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:44:05,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:44:05 BoogieIcfgContainer [2021-11-03 03:44:05,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:44:05,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:44:05,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:44:05,744 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:44:05,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:00" (3/4) ... [2021-11-03 03:44:05,747 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 03:44:05,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:44:05,795 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:44:05,797 INFO L168 Benchmark]: Toolchain (without parser) took 12617.63 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 52.6 MB in the beginning and 76.2 MB in the end (delta: -23.7 MB). Peak memory consumption was 604.3 kB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,798 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:44:05,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.12 ms. Allocated memory is still 88.1 MB. Free memory was 52.4 MB in the beginning and 69.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.29 ms. Allocated memory is still 88.1 MB. Free memory was 69.6 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:44:05,800 INFO L168 Benchmark]: Boogie Preprocessor took 49.12 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 66.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,800 INFO L168 Benchmark]: RCFGBuilder took 6717.95 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 54.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,801 INFO L168 Benchmark]: TraceAbstraction took 5338.45 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 54.6 MB in the beginning and 78.8 MB in the end (delta: -24.2 MB). Peak memory consumption was 139.9 kB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,802 INFO L168 Benchmark]: Witness Printer took 51.75 ms. Allocated memory is still 111.1 MB. Free memory was 78.8 MB in the beginning and 76.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:05,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.12 ms. Allocated memory is still 88.1 MB. Free memory was 52.4 MB in the beginning and 69.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.29 ms. Allocated memory is still 88.1 MB. Free memory was 69.6 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.12 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 66.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6717.95 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 54.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5338.45 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 54.6 MB in the beginning and 78.8 MB in the end (delta: -24.2 MB). Peak memory consumption was 139.9 kB. Max. memory is 16.1 GB. * Witness Printer took 51.75 ms. Allocated memory is still 111.1 MB. Free memory was 78.8 MB in the beginning and 76.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L14] reach_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-03 03:44:05,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22dc17b1-987f-4653-bbc4-b33ae981b0d7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE