./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:35:31,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:35:31,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:35:31,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:35:31,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:35:31,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:35:31,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:35:31,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:35:31,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:35:31,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:35:31,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:35:31,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:35:31,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:35:31,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:35:31,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:35:31,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:35:31,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:35:31,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:35:31,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:35:31,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:35:31,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:35:31,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:35:31,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:35:31,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:35:31,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:35:31,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:35:31,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:35:31,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:35:31,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:35:31,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:35:31,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:35:31,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:35:31,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:35:31,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:35:31,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:35:31,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:35:31,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:35:31,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:35:31,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:35:31,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:35:31,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:35:31,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:35:31,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:35:31,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:35:31,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:35:31,146 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:35:31,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:35:31,147 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:35:31,148 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:35:31,148 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:35:31,148 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:35:31,149 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:35:31,149 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:35:31,150 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:35:31,150 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:35:31,150 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:35:31,151 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:35:31,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:35:31,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:35:31,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:35:31,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:35:31,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:35:31,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:35:31,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:35:31,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:35:31,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:35:31,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:35:31,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:35:31,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:35:31,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:35:31,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:35:31,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:35:31,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:31,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:35:31,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:35:31,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:35:31,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:35:31,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:35:31,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:35:31,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:35:31,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:35:31,161 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2021-11-03 04:35:31,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:35:31,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:35:31,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:35:31,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:35:31,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:35:31,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-03 04:35:31,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/12f8eeea6/6d53c6f81fb04b6b89ec3b96edf0f1b9/FLAGab1f3de69 [2021-11-03 04:35:31,933 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:35:31,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-03 04:35:31,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/12f8eeea6/6d53c6f81fb04b6b89ec3b96edf0f1b9/FLAGab1f3de69 [2021-11-03 04:35:32,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/12f8eeea6/6d53c6f81fb04b6b89ec3b96edf0f1b9 [2021-11-03 04:35:32,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:35:32,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:35:32,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:32,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:35:32,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:35:32,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3450af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32, skipping insertion in model container [2021-11-03 04:35:32,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:35:32,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:35:32,528 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-03 04:35:32,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:32,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:35:32,558 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-03 04:35:32,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:32,572 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:35:32,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32 WrapperNode [2021-11-03 04:35:32,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:32,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:32,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:35:32,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:35:32,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:32,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:35:32,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:35:32,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:35:32,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:35:32,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:35:32,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:35:32,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:35:32,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (1/1) ... [2021-11-03 04:35:32,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:32,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:35:32,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:35:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:35:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:35:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:35:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:35:32,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:35:32,947 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 04:35:32,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:32 BoogieIcfgContainer [2021-11-03 04:35:32,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:35:32,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:35:32,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:35:32,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:35:32,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:35:32" (1/3) ... [2021-11-03 04:35:32,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6d24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:32, skipping insertion in model container [2021-11-03 04:35:32,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:32" (2/3) ... [2021-11-03 04:35:32,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed6d24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:32, skipping insertion in model container [2021-11-03 04:35:32,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:32" (3/3) ... [2021-11-03 04:35:32,961 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-11-03 04:35:32,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:35:32,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:35:33,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:35:33,026 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:35:33,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:35:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:35:33,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:33,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:35:33,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:35:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 45328, now seen corresponding path program 1 times [2021-11-03 04:35:33,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:35:33,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389820802] [2021-11-03 04:35:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:33,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:35:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:35:33,156 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:35:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:35:33,191 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:35:33,193 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:35:33,194 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:35:33,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:35:33,201 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:35:33,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:35:33,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:35:33 BoogieIcfgContainer [2021-11-03 04:35:33,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:35:33,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:35:33,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:35:33,222 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:35:33,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:32" (3/4) ... [2021-11-03 04:35:33,225 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:35:33,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:35:33,228 INFO L168 Benchmark]: Toolchain (without parser) took 916.35 ms. Allocated memory is still 138.4 MB. Free memory was 99.3 MB in the beginning and 86.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,229 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 116.7 MB in the beginning and 116.5 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:35:33,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.61 ms. Allocated memory is still 138.4 MB. Free memory was 99.1 MB in the beginning and 112.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.19 ms. Allocated memory is still 138.4 MB. Free memory was 112.7 MB in the beginning and 110.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,231 INFO L168 Benchmark]: Boogie Preprocessor took 19.09 ms. Allocated memory is still 138.4 MB. Free memory was 110.8 MB in the beginning and 110.0 MB in the end (delta: 869.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,232 INFO L168 Benchmark]: RCFGBuilder took 322.91 ms. Allocated memory is still 138.4 MB. Free memory was 110.0 MB in the beginning and 100.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,233 INFO L168 Benchmark]: TraceAbstraction took 268.86 ms. Allocated memory is still 138.4 MB. Free memory was 100.2 MB in the beginning and 87.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,234 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 138.4 MB. Free memory was 87.5 MB in the beginning and 86.9 MB in the end (delta: 616.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:33,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 116.7 MB in the beginning and 116.5 MB in the end (delta: 153.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.61 ms. Allocated memory is still 138.4 MB. Free memory was 99.1 MB in the beginning and 112.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.19 ms. Allocated memory is still 138.4 MB. Free memory was 112.7 MB in the beginning and 110.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.09 ms. Allocated memory is still 138.4 MB. Free memory was 110.8 MB in the beginning and 110.0 MB in the end (delta: 869.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 322.91 ms. Allocated memory is still 138.4 MB. Free memory was 110.0 MB in the beginning and 100.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 268.86 ms. Allocated memory is still 138.4 MB. Free memory was 100.2 MB in the beginning and 87.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 138.4 MB. Free memory was 87.5 MB in the beginning and 86.9 MB in the end (delta: 616.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 11]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; [L11] COND TRUE !(d == fp) [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:35:33,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:35:35,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:35:35,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:35:35,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:35:35,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:35:35,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:35:35,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:35:35,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:35:35,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:35:35,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:35:35,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:35:35,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:35:35,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:35:35,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:35:35,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:35:35,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:35:35,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:35:35,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:35:35,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:35:35,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:35:35,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:35:35,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:35:35,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:35:35,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:35:35,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:35:35,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:35:35,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:35:35,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:35:35,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:35:35,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:35:35,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:35:35,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:35:35,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:35:35,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:35:35,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:35:35,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:35:35,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:35:35,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:35:35,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:35:35,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:35:35,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:35:35,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:35:35,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:35:35,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:35:35,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:35:35,824 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:35:35,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:35:35,825 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:35:35,825 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:35:35,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:35:35,825 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:35:35,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:35:35,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:35:35,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:35:35,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:35:35,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:35:35,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:35:35,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:35:35,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:35:35,828 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:35:35,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:35:35,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:35:35,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:35:35,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:35:35,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:35:35,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:35:35,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:35:35,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:35:35,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:35,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:35:35,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:35:35,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:35:35,831 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:35:35,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:35:35,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:35:35,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:35:35,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:35:35,832 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2021-11-03 04:35:36,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:35:36,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:35:36,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:35:36,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:35:36,249 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:35:36,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-03 04:35:36,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/74c73e5d4/2502ff4ebc794f33840387ee7e5df7f2/FLAG07ff02d5a [2021-11-03 04:35:36,864 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:35:36,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-03 04:35:36,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/74c73e5d4/2502ff4ebc794f33840387ee7e5df7f2/FLAG07ff02d5a [2021-11-03 04:35:37,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/data/74c73e5d4/2502ff4ebc794f33840387ee7e5df7f2 [2021-11-03 04:35:37,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:35:37,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:35:37,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:37,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:35:37,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:35:37,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b092675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37, skipping insertion in model container [2021-11-03 04:35:37,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:35:37,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:35:37,435 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-03 04:35:37,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:37,459 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:35:37,494 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_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-03 04:35:37,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:35:37,521 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:35:37,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37 WrapperNode [2021-11-03 04:35:37,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:35:37,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:37,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:35:37,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:35:37,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:35:37,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:35:37,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:35:37,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:35:37,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:35:37,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:35:37,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:35:37,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:35:37,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (1/1) ... [2021-11-03 04:35:37,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:35:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:37,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:35:37,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:35:37,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:35:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:35:37,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:35:37,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:35:37,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:35:37,994 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 04:35:37,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:37 BoogieIcfgContainer [2021-11-03 04:35:37,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:35:37,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:35:37,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:35:38,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:35:38,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:35:37" (1/3) ... [2021-11-03 04:35:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f0295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:38, skipping insertion in model container [2021-11-03 04:35:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:35:37" (2/3) ... [2021-11-03 04:35:38,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635f0295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:35:38, skipping insertion in model container [2021-11-03 04:35:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:37" (3/3) ... [2021-11-03 04:35:38,003 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-11-03 04:35:38,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:35:38,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:35:38,103 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:35:38,113 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:35:38,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:35:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:35:38,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:35:38,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:35:38,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:35:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:35:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-03 04:35:38,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:35:38,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427662457] [2021-11-03 04:35:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:38,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:35:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:35:38,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:35:38,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:35:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:38,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:35:38,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:38,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:35:38,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:35:38,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427662457] [2021-11-03 04:35:38,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427662457] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:35:38,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:35:38,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:35:38,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641639962] [2021-11-03 04:35:38,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:35:38,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:35:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:35:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:35:38,430 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:38,449 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-03 04:35:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:35:38,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 4 [2021-11-03 04:35:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:38,457 INFO L225 Difference]: With dead ends: 13 [2021-11-03 04:35:38,458 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:35:38,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:35:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:35:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:35:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:35:38,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-11-03 04:35:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:35:38,482 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:35:38,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:35:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:35:38,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:35:38,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:35:38,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:35:38,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:35:38,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:35:38,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:35:38,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:35:38,744 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 04:35:38,745 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:35:38,745 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 04:35:38,745 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-11-03 04:35:38,746 INFO L853 garLoopResultBuilder]: At program point L13(lines 5 14) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (and (= ULTIMATE.start_main_~d~0 (fp.neg ((_ to_fp 11 53) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0)))) (= ULTIMATE.start_main_~fp~0 ((_ to_fp 11 53) currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode (/ 1.0 170141183460469231731687303715884105728.0))))))) [2021-11-03 04:35:38,746 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-03 04:35:38,746 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-11-03 04:35:38,746 INFO L857 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-11-03 04:35:38,750 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:35:38,751 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:35:38,757 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,762 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,763 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:35:38 BoogieIcfgContainer [2021-11-03 04:35:38,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:35:38,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:35:38,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:35:38,778 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:35:38,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:35:37" (3/4) ... [2021-11-03 04:35:38,782 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:35:38,794 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:35:38,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 04:35:38,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 04:35:38,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:35:38,822 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) [2021-11-03 04:35:38,836 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:35:38,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:35:38,838 INFO L168 Benchmark]: Toolchain (without parser) took 1587.17 ms. Allocated memory is still 75.5 MB. Free memory was 53.3 MB in the beginning and 42.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,839 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:35:38,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.30 ms. Allocated memory is still 75.5 MB. Free memory was 53.2 MB in the beginning and 59.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.2 MB in the beginning and 57.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,846 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 75.5 MB. Free memory was 57.7 MB in the beginning and 56.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:35:38,846 INFO L168 Benchmark]: RCFGBuilder took 380.22 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 47.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,847 INFO L168 Benchmark]: TraceAbstraction took 776.51 ms. Allocated memory is still 75.5 MB. Free memory was 47.2 MB in the beginning and 44.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,848 INFO L168 Benchmark]: Witness Printer took 58.72 ms. Allocated memory is still 75.5 MB. Free memory was 44.4 MB in the beginning and 42.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:35:38,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.30 ms. Allocated memory is still 75.5 MB. Free memory was 53.2 MB in the beginning and 59.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.2 MB in the beginning and 57.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 75.5 MB. Free memory was 57.7 MB in the beginning and 56.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 380.22 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 47.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 776.51 ms. Allocated memory is still 75.5 MB. Free memory was 47.2 MB in the beginning and 44.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 58.72 ms. Allocated memory is still 75.5 MB. Free memory was 44.4 MB in the beginning and 42.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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: 5 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 23 SizeOfPredicates, 5 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant [2021-11-03 04:35:38,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:35:38,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: d == ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)) && fp == ~to_fp~LONGDOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1/170141183460469231731687303715884105728)))) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:35:38,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c918fafa-7e5a-4543-9c24-3d386bb3a1d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE