./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --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_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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_f068a648-fb6c-462a-b7c6-d12afa99be2b/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 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:50:44,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:50:44,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:50:44,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:50:44,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:50:44,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:50:44,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:50:44,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:50:44,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:50:44,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:50:44,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:50:44,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:50:44,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:50:44,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:50:44,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:50:44,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:50:44,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:50:44,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:50:44,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:50:44,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:50:44,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:50:44,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:50:44,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:50:44,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:50:44,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:50:44,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:50:44,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:50:44,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:50:44,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:50:44,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:50:44,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:50:44,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:50:44,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:50:44,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:50:44,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:50:44,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:50:44,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:50:44,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:50:44,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:50:44,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:50:44,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:50:44,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:50:44,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:50:44,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:50:44,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:50:44,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:50:44,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:50:44,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:50:44,414 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:50:44,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:50:44,414 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:50:44,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:50:44,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:50:44,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:50:44,416 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:50:44,416 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:50:44,417 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:50:44,417 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:50:44,417 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:50:44,417 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:50:44,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:50:44,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:50:44,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:50:44,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:50:44,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:50:44,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:50:44,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:50:44,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:50:44,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:50:44,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:50:44,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:50:44,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:50:44,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:50:44,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:50:44,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:44,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:50:44,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:50:44,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:50:44,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:50:44,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:50:44,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:50:44,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:50:44,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:50:44,426 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 [2021-11-21 00:50:44,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:50:44,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:50:44,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:50:44,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:50:44,721 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:50:44,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-11-21 00:50:44,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/52202be39/ad4d70777e7b467b88d2db4d15c66908/FLAG34bc97271 [2021-11-21 00:50:45,337 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:50:45,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-11-21 00:50:45,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/52202be39/ad4d70777e7b467b88d2db4d15c66908/FLAG34bc97271 [2021-11-21 00:50:45,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/52202be39/ad4d70777e7b467b88d2db4d15c66908 [2021-11-21 00:50:45,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:50:45,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:50:45,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:45,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:50:45,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:50:45,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:45,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34dda923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45, skipping insertion in model container [2021-11-21 00:50:45,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:45,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:50:45,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:50:45,941 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i[1626,1639] [2021-11-21 00:50:45,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:45,953 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:50:45,969 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i[1626,1639] [2021-11-21 00:50:45,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:45,984 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:50:45,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45 WrapperNode [2021-11-21 00:50:45,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:45,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:45,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:50:45,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:50:45,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,019 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2021-11-21 00:50:46,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:46,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:50:46,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:50:46,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:50:46,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:50:46,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:50:46,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:50:46,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:50:46,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (1/1) ... [2021-11-21 00:50:46,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:46,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:50:46,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:50:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:50:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:50:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:50:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:50:46,159 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:50:46,160 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:50:46,236 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:50:46,260 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:50:46,260 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:50:46,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:46 BoogieIcfgContainer [2021-11-21 00:50:46,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:50:46,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:50:46,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:50:46,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:50:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:50:45" (1/3) ... [2021-11-21 00:50:46,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72997056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:46, skipping insertion in model container [2021-11-21 00:50:46,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:45" (2/3) ... [2021-11-21 00:50:46,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72997056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:46, skipping insertion in model container [2021-11-21 00:50:46,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:46" (3/3) ... [2021-11-21 00:50:46,271 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-11-21 00:50:46,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:50:46,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:50:46,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:50:46,336 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 00:50:46,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:50:46,351 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) [2021-11-21 00:50:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:50:46,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:46,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:50:46,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-21 00:50:46,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:46,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450004225] [2021-11-21 00:50:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:46,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:50:46,469 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:50:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:50:46,520 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:50:46,522 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:50:46,523 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:50:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:50:46,531 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 00:50:46,544 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:50:46,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:50:46 BoogieIcfgContainer [2021-11-21 00:50:46,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:50:46,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:50:46,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:50:46,574 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:50:46,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:46" (3/4) ... [2021-11-21 00:50:46,581 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:50:46,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:50:46,584 INFO L158 Benchmark]: Toolchain (without parser) took 856.68ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 76.6MB in the beginning and 87.6MB in the end (delta: -11.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,585 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:50:46,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.72ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 76.0MB in the beginning and 113.6MB in the end (delta: -37.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.87ms. Allocated memory is still 138.4MB. Free memory was 113.6MB in the beginning and 112.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,591 INFO L158 Benchmark]: Boogie Preprocessor took 16.09ms. Allocated memory is still 138.4MB. Free memory was 112.0MB in the beginning and 111.3MB in the end (delta: 665.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:50:46,597 INFO L158 Benchmark]: RCFGBuilder took 225.75ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 101.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,598 INFO L158 Benchmark]: TraceAbstraction took 308.24ms. Allocated memory is still 138.4MB. Free memory was 101.0MB in the beginning and 88.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,599 INFO L158 Benchmark]: Witness Printer took 7.70ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 87.6MB in the end (delta: 755.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:50:46,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.72ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 76.0MB in the beginning and 113.6MB in the end (delta: -37.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.87ms. Allocated memory is still 138.4MB. Free memory was 113.6MB in the beginning and 112.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.09ms. Allocated memory is still 138.4MB. Free memory was 112.0MB in the beginning and 111.3MB in the end (delta: 665.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.75ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 101.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 308.24ms. Allocated memory is still 138.4MB. Free memory was 101.0MB in the beginning and 88.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 7.70ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 87.6MB in the end (delta: 755.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 38]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L37] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L38] reach_error() VAL [IN=49, x=49] - 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: , 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 [2021-11-21 00:50:46,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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_f068a648-fb6c-462a-b7c6-d12afa99be2b/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 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:50:49,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:50:49,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:50:49,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:50:49,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:50:49,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:50:49,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:50:49,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:50:49,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:50:49,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:50:49,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:50:49,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:50:49,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:50:49,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:50:49,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:50:49,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:50:49,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:50:49,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:50:49,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:50:49,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:50:49,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:50:49,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:50:49,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:50:49,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:50:49,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:50:49,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:50:49,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:50:49,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:50:49,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:50:49,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:50:49,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:50:49,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:50:49,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:50:49,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:50:49,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:50:49,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:50:49,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:50:49,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:50:49,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:50:49,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:50:49,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:50:49,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:50:49,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:50:49,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:50:49,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:50:49,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:50:49,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:50:49,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:50:49,313 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:50:49,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:50:49,314 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:50:49,314 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:50:49,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:50:49,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:50:49,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:50:49,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:50:49,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:50:49,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:50:49,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:50:49,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:50:49,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:50:49,318 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:50:49,318 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:50:49,318 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:50:49,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:50:49,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:50:49,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:50:49,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:50:49,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:50:49,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:50:49,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:49,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:50:49,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:50:49,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:50:49,321 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:50:49,321 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:50:49,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:50:49,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:50:49,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:50:49,322 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 [2021-11-21 00:50:49,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:50:49,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:50:49,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:50:49,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:50:49,775 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:50:49,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-11-21 00:50:49,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/b2f104479/559f93e579db41b08a0171ca9a43241b/FLAG7751cfe27 [2021-11-21 00:50:50,306 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:50:50,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-11-21 00:50:50,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/b2f104479/559f93e579db41b08a0171ca9a43241b/FLAG7751cfe27 [2021-11-21 00:50:50,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/data/b2f104479/559f93e579db41b08a0171ca9a43241b [2021-11-21 00:50:50,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:50:50,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:50:50,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:50,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:50:50,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:50:50,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:50" (1/1) ... [2021-11-21 00:50:50,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee90925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:50, skipping insertion in model container [2021-11-21 00:50:50,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:50" (1/1) ... [2021-11-21 00:50:50,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:50:50,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:50:51,022 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i[1626,1639] [2021-11-21 00:50:51,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:51,053 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:50:51,070 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_f068a648-fb6c-462a-b7c6-d12afa99be2b/sv-benchmarks/c/floats-cdfpl/square_1.i[1626,1639] [2021-11-21 00:50:51,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:51,097 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:50:51,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51 WrapperNode [2021-11-21 00:50:51,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:51,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:51,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:50:51,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:50:51,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,143 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-21 00:50:51,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:51,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:50:51,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:50:51,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:50:51,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:50:51,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:50:51,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:50:51,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:50:51,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2021-11-21 00:50:51,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:51,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:51,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:50:51,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:50:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:50:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:50:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:50:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:50:51,326 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:50:51,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:50:53,506 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:50:53,512 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:50:53,512 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:50:53,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:53 BoogieIcfgContainer [2021-11-21 00:50:53,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:50:53,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:50:53,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:50:53,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:50:53,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:50:50" (1/3) ... [2021-11-21 00:50:53,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576cdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:53, skipping insertion in model container [2021-11-21 00:50:53,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (2/3) ... [2021-11-21 00:50:53,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576cdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:53, skipping insertion in model container [2021-11-21 00:50:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:53" (3/3) ... [2021-11-21 00:50:53,522 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-11-21 00:50:53,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:50:53,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:50:53,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:50:53,605 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 00:50:53,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:50:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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 00:50:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:50:53,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:53,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:50:53,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-21 00:50:53,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:50:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673280359] [2021-11-21 00:50:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:53,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:50:53,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:50:53,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:50:53,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:50:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:54,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:50:54,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:50:54,288 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 00:50:54,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:50:54,317 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 00:50:54,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:50:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673280359] [2021-11-21 00:50:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673280359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:54,319 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:54,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:50:54,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525474336] [2021-11-21 00:50:54,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:54,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:50:54,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:50:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:50:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:50:54,355 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:50:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:54,368 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-21 00:50:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:50:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:50:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:54,377 INFO L225 Difference]: With dead ends: 19 [2021-11-21 00:50:54,377 INFO L226 Difference]: Without dead ends: 7 [2021-11-21 00:50:54,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:50:54,383 INFO L933 BasicCegarLoop]: 10 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, 10 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 00:50:54,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:50:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-21 00:50:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-21 00:50:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-11-21 00:50:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-21 00:50:54,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-21 00:50:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:54,410 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-21 00:50:54,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:50:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-21 00:50:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:50:54,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:54,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:50:54,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:50:54,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:50:54,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-21 00:50:54,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:50:54,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122250897] [2021-11-21 00:50:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:54,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:50:54,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:50:54,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:50:54,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:51:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:51:15,819 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:51:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:51:18,451 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 00:51:18,451 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:51:18,453 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:51:18,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:51:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:51:18,658 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:51:18,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:51:18,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:51:18 BoogieIcfgContainer [2021-11-21 00:51:18,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:51:18,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:51:18,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:51:18,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:51:18,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:53" (3/4) ... [2021-11-21 00:51:18,699 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 00:51:18,755 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:51:18,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:51:18,756 INFO L158 Benchmark]: Toolchain (without parser) took 28034.95ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 44.4MB in the end (delta: -11.7MB). Peak memory consumption was 989.2kB. Max. memory is 16.1GB. [2021-11-21 00:51:18,756 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:51:18,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.60ms. Allocated memory is still 54.5MB. Free memory was 32.5MB in the beginning and 36.3MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:51:18,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.97ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 34.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:51:18,758 INFO L158 Benchmark]: Boogie Preprocessor took 47.46ms. Allocated memory is still 54.5MB. Free memory was 34.8MB in the beginning and 33.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:51:18,758 INFO L158 Benchmark]: RCFGBuilder took 2321.29ms. Allocated memory is still 54.5MB. Free memory was 33.6MB in the beginning and 25.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:51:18,759 INFO L158 Benchmark]: TraceAbstraction took 25177.99ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.2MB in the beginning and 46.5MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:51:18,759 INFO L158 Benchmark]: Witness Printer took 59.73ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:51:18,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.60ms. Allocated memory is still 54.5MB. Free memory was 32.5MB in the beginning and 36.3MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.97ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 34.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.46ms. Allocated memory is still 54.5MB. Free memory was 34.8MB in the beginning and 33.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2321.29ms. Allocated memory is still 54.5MB. Free memory was 33.6MB in the beginning and 25.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 25177.99ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.2MB in the beginning and 46.5MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.73ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] [L37] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] [L38] reach_error() VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 21.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 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! [2021-11-21 00:51:18,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f068a648-fb6c-462a-b7c6-d12afa99be2b/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE