./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c --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_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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_035bced9-f8bb-4384-9e68-03e80267a030/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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:35:57,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:35:57,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:35:57,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:35:57,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:35:57,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:35:57,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:35:57,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:35:57,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:35:57,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:35:57,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:35:57,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:35:57,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:35:57,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:35:57,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:35:57,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:35:57,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:35:57,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:35:57,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:35:57,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:35:57,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:35:57,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:35:57,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:35:57,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:35:57,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:35:57,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:35:57,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:35:57,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:35:57,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:35:57,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:35:57,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:35:57,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:35:57,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:35:57,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:35:57,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:35:57,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:35:57,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:35:57,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:35:57,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:35:57,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:35:57,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:35:57,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:35:58,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:35:58,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:35:58,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:35:58,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:35:58,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:35:58,038 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:35:58,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:35:58,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:35:58,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:35:58,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:35:58,039 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:35:58,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:35:58,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:35:58,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:35:58,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:35:58,040 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:35:58,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:35:58,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:35:58,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:35:58,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:35:58,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:35:58,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:35:58,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:35:58,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:35:58,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:35:58,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:35:58,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:35:58,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:35:58,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:35:58,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:35:58,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:35:58,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:58,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:35:58,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:35:58,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:35:58,044 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:35:58,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:35:58,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:35:58,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:35:58,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:35:58,045 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_035bced9-f8bb-4384-9e68-03e80267a030/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2021-11-12 23:35:58,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:35:58,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:35:58,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:35:58,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:35:58,324 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:35:58,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:35:58,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/43c081d53/e3dbc5c85c544eec852ba14684c9ff41/FLAG073a3bd19 [2021-11-12 23:35:58,895 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:35:58,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:35:58,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/43c081d53/e3dbc5c85c544eec852ba14684c9ff41/FLAG073a3bd19 [2021-11-12 23:35:59,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/43c081d53/e3dbc5c85c544eec852ba14684c9ff41 [2021-11-12 23:35:59,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:35:59,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:35:59,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:59,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:35:59,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:35:59,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43768579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59, skipping insertion in model container [2021-11-12 23:35:59,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:35:59,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:35:59,506 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-12 23:35:59,518 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-12 23:35:59,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:59,608 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:35:59,645 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-12 23:35:59,647 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-12 23:35:59,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:35:59,688 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:35:59,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59 WrapperNode [2021-11-12 23:35:59,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:35:59,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:59,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:35:59,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:35:59,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:35:59,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:35:59,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:35:59,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:35:59,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:35:59,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:35:59,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:35:59,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:35:59,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (1/1) ... [2021-11-12 23:35:59,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:35:59,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:59,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:35:59,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:35:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:35:59,859 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-12 23:35:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-12 23:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:35:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:35:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:36:00,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:36:00,483 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:36:00,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:00 BoogieIcfgContainer [2021-11-12 23:36:00,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:36:00,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:36:00,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:36:00,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:36:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:35:59" (1/3) ... [2021-11-12 23:36:00,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c35d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:00, skipping insertion in model container [2021-11-12 23:36:00,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:35:59" (2/3) ... [2021-11-12 23:36:00,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c35d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:00, skipping insertion in model container [2021-11-12 23:36:00,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:00" (3/3) ... [2021-11-12 23:36:00,496 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:36:00,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:36:00,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:36:00,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:36:00,570 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 23:36:00,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:36:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:36:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:36:00,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:00,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:36:00,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash 9849864, now seen corresponding path program 1 times [2021-11-12 23:36:00,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:36:00,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994682482] [2021-11-12 23:36:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:00,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:36:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:36:00,699 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:36:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:36:00,736 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:36:00,738 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:36:00,739 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 23:36:00,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-12 23:36:00,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:36:00,747 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 23:36:00,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:36:00,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:36:00 BoogieIcfgContainer [2021-11-12 23:36:00,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:36:00,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:36:00,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:36:00,771 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:36:00,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:00" (3/4) ... [2021-11-12 23:36:00,775 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:36:00,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:36:00,777 INFO L158 Benchmark]: Toolchain (without parser) took 1542.53ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 53.3MB in the beginning and 78.7MB in the end (delta: -25.4MB). Peak memory consumption was 325.7kB. Max. memory is 16.1GB. [2021-11-12 23:36:00,777 INFO L158 Benchmark]: CDTParser took 6.36ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 70.4MB in the end (delta: -9.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.40ms. Allocated memory is still 88.1MB. Free memory was 53.0MB in the beginning and 61.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.00ms. Allocated memory is still 88.1MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,780 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 88.1MB. Free memory was 59.2MB in the beginning and 57.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,780 INFO L158 Benchmark]: RCFGBuilder took 724.69ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 57.4MB in the beginning and 92.7MB in the end (delta: -35.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,781 INFO L158 Benchmark]: TraceAbstraction took 282.10ms. Allocated memory is still 115.3MB. Free memory was 92.2MB in the beginning and 79.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:36:00,782 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 115.3MB. Free memory was 79.2MB in the beginning and 78.7MB in the end (delta: 503.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:36:00,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 6.36ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 70.4MB in the end (delta: -9.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.40ms. Allocated memory is still 88.1MB. Free memory was 53.0MB in the beginning and 61.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.00ms. Allocated memory is still 88.1MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 88.1MB. Free memory was 59.2MB in the beginning and 57.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 724.69ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 57.4MB in the beginning and 92.7MB in the end (delta: -35.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 282.10ms. Allocated memory is still 115.3MB. Free memory was 92.2MB in the beginning and 79.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 115.3MB. Free memory was 79.2MB in the beginning and 78.7MB in the end (delta: 503.2kB). 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] 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] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 2 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=51occurred 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, 4 NumberOfCodeBlocks, 4 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 23:36:00,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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_035bced9-f8bb-4384-9e68-03e80267a030/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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:36:03,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:36:03,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:36:03,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:36:03,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:36:03,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:36:03,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:36:03,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:36:03,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:36:03,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:36:03,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:36:03,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:36:03,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:36:03,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:36:03,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:36:03,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:36:03,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:36:03,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:36:03,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:36:03,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:36:03,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:36:03,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:36:03,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:36:03,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:36:03,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:36:03,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:36:03,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:36:03,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:36:03,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:36:03,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:36:03,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:36:03,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:36:03,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:36:03,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:36:03,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:36:03,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:36:03,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:36:03,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:36:03,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:36:03,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:36:03,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:36:03,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:36:03,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:36:03,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:36:03,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:36:03,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:36:03,466 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:36:03,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:36:03,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:36:03,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:36:03,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:36:03,467 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:36:03,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:36:03,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:36:03,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:36:03,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:36:03,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:36:03,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:36:03,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:36:03,471 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:36:03,471 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:36:03,471 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:36:03,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:36:03,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:36:03,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:36:03,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:36:03,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:36:03,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:36:03,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:36:03,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:03,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:36:03,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:36:03,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:36:03,474 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:36:03,475 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:36:03,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:36:03,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:36:03,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:36:03,476 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_035bced9-f8bb-4384-9e68-03e80267a030/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2021-11-12 23:36:03,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:36:03,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:36:03,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:36:03,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:36:03,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:36:03,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:36:03,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/359cc90bc/b6aec5b9de6b450aa100d3d88a92741f/FLAGb9696e76a [2021-11-12 23:36:04,604 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:36:04,605 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:36:04,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/359cc90bc/b6aec5b9de6b450aa100d3d88a92741f/FLAGb9696e76a [2021-11-12 23:36:04,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/data/359cc90bc/b6aec5b9de6b450aa100d3d88a92741f [2021-11-12 23:36:04,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:36:04,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:36:04,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:04,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:36:04,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:36:04,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:04" (1/1) ... [2021-11-12 23:36:04,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b71ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:04, skipping insertion in model container [2021-11-12 23:36:04,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:04" (1/1) ... [2021-11-12 23:36:04,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:36:04,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:36:05,100 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-12 23:36:05,106 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-12 23:36:05,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:05,223 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:36:05,240 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-12 23:36:05,242 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_035bced9-f8bb-4384-9e68-03e80267a030/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-12 23:36:05,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:05,292 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:36:05,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05 WrapperNode [2021-11-12 23:36:05,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:05,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:05,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:36:05,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:36:05,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:05,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:36:05,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:36:05,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:36:05,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:36:05,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:36:05,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:36:05,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:36:05,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (1/1) ... [2021-11-12 23:36:05,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:05,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:36:05,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:36:05,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:36:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:36:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:36:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-12 23:36:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-12 23:36:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:36:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:36:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:36:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:36:08,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:36:08,229 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:36:08,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:08 BoogieIcfgContainer [2021-11-12 23:36:08,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:36:08,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:36:08,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:36:08,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:36:08,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:36:04" (1/3) ... [2021-11-12 23:36:08,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322cca62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:08, skipping insertion in model container [2021-11-12 23:36:08,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:05" (2/3) ... [2021-11-12 23:36:08,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322cca62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:08, skipping insertion in model container [2021-11-12 23:36:08,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:08" (3/3) ... [2021-11-12 23:36:08,240 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2021-11-12 23:36:08,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:36:08,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:36:08,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:36:08,302 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 23:36:08,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:36:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:36:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:36:08,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:08,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:08,326 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-12 23:36:08,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:08,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296982588] [2021-11-12 23:36:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:08,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:08,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:08,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:36:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:08,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:36:08,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:08,945 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 23:36:08,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:08,976 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 23:36:08,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:36:08,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296982588] [2021-11-12 23:36:08,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296982588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:08,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:08,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:36:08,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839842455] [2021-11-12 23:36:08,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:08,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:36:08,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:36:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:36:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:36:09,034 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:09,082 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-11-12 23:36:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:36:09,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:36:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:09,098 INFO L225 Difference]: With dead ends: 157 [2021-11-12 23:36:09,098 INFO L226 Difference]: Without dead ends: 74 [2021-11-12 23:36:09,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 23:36:09,116 INFO L933 BasicCegarLoop]: 116 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, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:09,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:36:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-12 23:36:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-12 23:36:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-12 23:36:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-11-12 23:36:09,184 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-11-12 23:36:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:09,184 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-11-12 23:36:09,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-11-12 23:36:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:36:09,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:09,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:09,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:36:09,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:36:09,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-12 23:36:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:09,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714342298] [2021-11-12 23:36:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:09,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:09,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:09,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:39:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:39:16,773 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:40:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:40:15,028 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:40:15,028 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:40:15,030 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-12 23:40:15,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-12 23:40:15,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:15,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:15,235 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:40:15,238 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:40:15,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:40:15 BoogieIcfgContainer [2021-11-12 23:40:15,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:40:15,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:40:15,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:40:15,268 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:40:15,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:08" (3/4) ... [2021-11-12 23:40:15,271 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:40:15,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:40:15,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:40:15,315 INFO L158 Benchmark]: Toolchain (without parser) took 250420.86ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 40.5MB in the end (delta: 6.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,316 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 52.4MB. Free memory was 33.4MB in the beginning and 33.3MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:15,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.66ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 46.5MB in the end (delta: 431.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.34ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,323 INFO L158 Benchmark]: Boogie Preprocessor took 51.70ms. Allocated memory is still 67.1MB. Free memory was 44.3MB in the beginning and 42.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,323 INFO L158 Benchmark]: RCFGBuilder took 2825.63ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 47.8MB in the end (delta: -5.4MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,324 INFO L158 Benchmark]: TraceAbstraction took 247033.66ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 42.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:15,324 INFO L158 Benchmark]: Witness Printer took 46.53ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:15,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 52.4MB. Free memory was 33.4MB in the beginning and 33.3MB in the end (delta: 46.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.66ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 46.5MB in the end (delta: 431.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.34ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.70ms. Allocated memory is still 67.1MB. Free memory was 44.3MB in the beginning and 42.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2825.63ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 47.8MB in the end (delta: -5.4MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 247033.66ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 42.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 46.53ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.7MB). 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 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] 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] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L48] reach_error() VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 246.9s, 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, 116 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, 116 mSDtfsCounter, 0 mSolverCounterSat, 2.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 187.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 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 23:40:15,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_035bced9-f8bb-4384-9e68-03e80267a030/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