./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF --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 c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:03,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:03,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:03,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:03,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:03,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:03,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:03,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:03,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:03,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:03,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:03,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:03,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:03,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:03,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:03,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:03,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:03,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:03,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:03,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:03,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:03,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:03,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:03,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:03,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:03,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:03,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:03,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:03,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:03,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:03,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:03,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:03,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:03,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:03,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:03,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:03,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:03,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:03,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:03,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:03,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:03,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:39:03,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:03,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:03,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:03,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:03,799 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:03,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:03,799 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:03,799 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:39:03,799 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:03,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:03,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:39:03,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:39:03,800 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:03,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:39:03,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:39:03,801 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:39:03,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:03,805 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:03,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:03,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:03,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:03,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:03,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:03,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:03,806 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:03,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:03,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:03,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:03,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:03,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:03,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:03,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:03,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:03,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:03,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:03,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:39:03,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:39:03,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:03,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:03,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:03,811 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2021-11-12 22:39:04,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:04,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:04,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:04,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:04,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:04,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-12 22:39:04,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/76cbff6d9/32fb4ffbd8f246c3995bb5ac6f0875a3/FLAG2e261a732 [2021-11-12 22:39:04,606 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:04,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-12 22:39:04,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/76cbff6d9/32fb4ffbd8f246c3995bb5ac6f0875a3/FLAG2e261a732 [2021-11-12 22:39:04,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/76cbff6d9/32fb4ffbd8f246c3995bb5ac6f0875a3 [2021-11-12 22:39:04,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:04,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:04,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:04,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:04,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:04,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:04" (1/1) ... [2021-11-12 22:39:04,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469137ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:04, skipping insertion in model container [2021-11-12 22:39:04,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:04" (1/1) ... [2021-11-12 22:39:04,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:05,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:05,190 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-12 22:39:05,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:05,203 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:05,229 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-12 22:39:05,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:05,247 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:05,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05 WrapperNode [2021-11-12 22:39:05,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:05,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:05,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:05,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:05,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:05,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:05,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:05,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:05,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:05,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:05,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:05,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:05,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (1/1) ... [2021-11-12 22:39:05,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:05,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:05,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:39:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:05,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:05,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:05,655 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:39:05,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:05 BoogieIcfgContainer [2021-11-12 22:39:05,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:05,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:05,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:05,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:05,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:04" (1/3) ... [2021-11-12 22:39:05,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7521f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:05, skipping insertion in model container [2021-11-12 22:39:05,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:05" (2/3) ... [2021-11-12 22:39:05,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7521f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:05, skipping insertion in model container [2021-11-12 22:39:05,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:05" (3/3) ... [2021-11-12 22:39:05,670 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-12 22:39:05,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:05,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:39:05,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:05,735 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 [2021-11-12 22:39:05,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:39:05,754 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) [2021-11-12 22:39:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:39:05,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:05,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:39:05,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-12 22:39:05,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:39:05,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034150260] [2021-11-12 22:39:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:05,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:39:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:39:05,900 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:39:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:39:05,937 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:39:05,940 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:39:05,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:39:05,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:39:05,949 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:39:05,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:39:05,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:39:05 BoogieIcfgContainer [2021-11-12 22:39:05,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:39:05,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:39:05,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:39:05,974 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:39:05,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:05" (3/4) ... [2021-11-12 22:39:05,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:39:05,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:39:05,980 INFO L158 Benchmark]: Toolchain (without parser) took 998.53ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 87.0MB in the end (delta: -33.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:05,980 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:05,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.03ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 68.5MB in the end (delta: -15.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-12 22:39:05,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.70ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 67.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:39:05,982 INFO L158 Benchmark]: Boogie Preprocessor took 47.28ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 932.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:05,987 INFO L158 Benchmark]: RCFGBuilder took 318.82ms. Allocated memory is still 92.3MB. Free memory was 66.0MB in the beginning and 56.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:39:05,988 INFO L158 Benchmark]: TraceAbstraction took 313.91ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 56.2MB in the beginning and 87.0MB in the end (delta: -30.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:05,990 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:05,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.03ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 68.5MB in the end (delta: -15.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.70ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 67.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.28ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 932.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.82ms. Allocated memory is still 92.3MB. Free memory was 66.0MB in the beginning and 56.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 313.91ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 56.2MB in the beginning and 87.0MB in the end (delta: -30.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 < 1.39843f) 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 [2021-11-12 22:39:06,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/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_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF --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 c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:08,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:08,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:08,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:08,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:08,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:08,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:08,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:08,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:08,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:08,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:08,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:08,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:08,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:08,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:08,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:08,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:08,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:08,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:08,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:08,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:08,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:08,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:08,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:08,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:08,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:08,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:08,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:08,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:08,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:08,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:08,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:08,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:08,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:08,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:08,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:08,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:08,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:08,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:08,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:08,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:08,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:39:08,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:08,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:08,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:08,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:08,655 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:08,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:08,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:08,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:08,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:08,656 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:08,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:08,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:08,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:08,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:08,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:08,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:08,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:08,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:08,661 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:08,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:08,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:08,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:08,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:08,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:08,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:08,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:08,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:08,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:08,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:08,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:08,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:08,663 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:08,664 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:08,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:08,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:08,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:08,665 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5accd8423b70ca59158b13da79e2b7f06e66e009ebcbae27877bbff47ee55bb [2021-11-12 22:39:09,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:09,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:09,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:09,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:09,096 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:09,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-12 22:39:09,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/521c22cda/0573ce56c4db491aafc1874dab96b6af/FLAG929beb62e [2021-11-12 22:39:09,734 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:09,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-12 22:39:09,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/521c22cda/0573ce56c4db491aafc1874dab96b6af/FLAG929beb62e [2021-11-12 22:39:10,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/data/521c22cda/0573ce56c4db491aafc1874dab96b6af [2021-11-12 22:39:10,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:10,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:10,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:10,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:10,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:10,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd45ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10, skipping insertion in model container [2021-11-12 22:39:10,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:10,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:10,281 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-12 22:39:10,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:10,297 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:10,314 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_fd29c7c0-8d77-4781-a838-b9116d4098f9/sv-benchmarks/c/floats-cdfpl/square_3.i[1629,1642] [2021-11-12 22:39:10,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:10,350 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:10,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10 WrapperNode [2021-11-12 22:39:10,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:10,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:10,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:10,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:10,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:10,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:10,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:10,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:10,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:10,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:10,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:10,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:10,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (1/1) ... [2021-11-12 22:39:10,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:10,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:10,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:39:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:12,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:12,831 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:39:12,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:12 BoogieIcfgContainer [2021-11-12 22:39:12,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:12,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:12,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:12,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:12,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:10" (1/3) ... [2021-11-12 22:39:12,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56392e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:12, skipping insertion in model container [2021-11-12 22:39:12,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:10" (2/3) ... [2021-11-12 22:39:12,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56392e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:12, skipping insertion in model container [2021-11-12 22:39:12,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:12" (3/3) ... [2021-11-12 22:39:12,844 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-12 22:39:12,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:12,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:39:12,899 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:12,907 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 [2021-11-12 22:39:12,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:39:12,934 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) [2021-11-12 22:39:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:39:12,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:12,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:39:12,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:12,947 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-12 22:39:12,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:12,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735062713] [2021-11-12 22:39:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:12,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:12,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:13,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:39:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:13,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:39:13,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:13,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:13,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:13,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735062713] [2021-11-12 22:39:13,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735062713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:13,645 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:13,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:39:13,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548461977] [2021-11-12 22:39:13,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:13,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:39:13,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:39:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:39:13,685 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) [2021-11-12 22:39:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:13,699 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-12 22:39:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:39:13,701 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 [2021-11-12 22:39:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:13,709 INFO L225 Difference]: With dead ends: 19 [2021-11-12 22:39:13,710 INFO L226 Difference]: Without dead ends: 7 [2021-11-12 22:39:13,713 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 [2021-11-12 22:39:13,717 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:13,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:39:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-12 22:39:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-12 22:39:13,747 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) [2021-11-12 22:39:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-12 22:39:13,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-12 22:39:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:13,750 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-12 22:39:13,750 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) [2021-11-12 22:39:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-12 22:39:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:39:13,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:13,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:39:13,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:13,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:13,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-12 22:39:13,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:13,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688354667] [2021-11-12 22:39:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:13,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:13,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:14,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:40:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:40:03,498 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:42:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:42:13,363 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:42:13,363 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:42:13,365 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:42:13,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:42:13,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:13,571 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:42:13,575 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:42:13,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:42:13 BoogieIcfgContainer [2021-11-12 22:42:13,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:42:13,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:42:13,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:42:13,628 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:42:13,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:12" (3/4) ... [2021-11-12 22:42:13,639 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 22:42:13,711 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:42:13,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:42:13,718 INFO L158 Benchmark]: Toolchain (without parser) took 183611.73ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 49.5MB in the end (delta: -15.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,723 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:42:13,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.93ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.8MB in the end (delta: -5.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,726 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.20ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,726 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 37.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:42:13,727 INFO L158 Benchmark]: RCFGBuilder took 2370.42ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 28.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,728 INFO L158 Benchmark]: TraceAbstraction took 180789.25ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.7MB in the beginning and 32.8MB in the end (delta: -5.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,729 INFO L158 Benchmark]: Witness Printer took 90.98ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 49.5MB in the end (delta: -16.7MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-12 22:42:13,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.93ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.8MB in the end (delta: -5.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.20ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 37.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2370.42ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 28.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 180789.25ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.7MB in the beginning and 32.8MB in the end (delta: -5.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Witness Printer took 90.98ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 49.5MB in the end (delta: -16.7MB). Peak memory consumption was 4.5MB. 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=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L37] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L38] reach_error() VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 180.7s, 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, 0.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.00ms 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, 0.36ms 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, 50.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 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! [2021-11-12 22:42:13,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd29c7c0-8d77-4781-a838-b9116d4098f9/bin/utaipan-vmNK8stdcF/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