./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/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_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs --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 bb25cff741a4983d608d95bf512bab62b5988d3b ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/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_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs --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 bb25cff741a4983d608d95bf512bab62b5988d3b .................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:25:52,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:25:52,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:25:52,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:25:52,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:25:52,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:25:52,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:25:52,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:25:52,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:25:52,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:25:52,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:25:52,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:25:52,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:25:52,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:25:52,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:25:52,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:25:52,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:25:52,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:25:52,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:25:52,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:25:52,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:25:52,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:25:52,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:25:52,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:25:52,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:25:52,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:25:52,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:25:52,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:25:52,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:25:52,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:25:52,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:25:52,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:25:52,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:25:52,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:25:52,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:25:52,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:25:52,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:25:52,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:25:52,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:25:52,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:25:52,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:25:52,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:25:52,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:25:52,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:25:52,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:25:52,283 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:25:52,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:25:52,284 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:25:52,284 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:25:52,284 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:25:52,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:25:52,285 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:25:52,285 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:25:52,294 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:25:52,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:25:52,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:25:52,295 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:25:52,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:25:52,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:25:52,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:25:52,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:25:52,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:25:52,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:25:52,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:25:52,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:25:52,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:25:52,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:25:52,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:25:52,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:25:52,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:25:52,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:25:52,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:25:52,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:25:52,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:25:52,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:25:52,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:25:52,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:25:52,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:25:52,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:25:52,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:25:52,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:25:52,300 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2021-10-16 02:25:52,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:25:52,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:25:52,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:25:52,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:25:52,571 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:25:52,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-10-16 02:25:52,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/5961d0cc1/26d4a7b617594224b10f80dcbce0fcfe/FLAGa9c0e56a3 [2021-10-16 02:25:53,093 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:25:53,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-10-16 02:25:53,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/5961d0cc1/26d4a7b617594224b10f80dcbce0fcfe/FLAGa9c0e56a3 [2021-10-16 02:25:53,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/5961d0cc1/26d4a7b617594224b10f80dcbce0fcfe [2021-10-16 02:25:53,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:25:53,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:25:53,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:25:53,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:25:53,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:25:53,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b387c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53, skipping insertion in model container [2021-10-16 02:25:53,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:25:53,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:25:53,736 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-10-16 02:25:53,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:25:53,754 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:25:53,769 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-10-16 02:25:53,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:25:53,783 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:25:53,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53 WrapperNode [2021-10-16 02:25:53,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:25:53,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:25:53,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:25:53,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:25:53,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:25:53,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:25:53,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:25:53,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:25:53,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:25:53,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:25:53,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:25:53,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:25:53,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (1/1) ... [2021-10-16 02:25:53,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:25:53,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:25:53,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:25:53,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:25:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:25:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:25:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:25:54,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:25:54,132 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:25:54,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:54 BoogieIcfgContainer [2021-10-16 02:25:54,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:25:54,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:25:54,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:25:54,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:25:54,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:25:53" (1/3) ... [2021-10-16 02:25:54,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6906bfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:25:54, skipping insertion in model container [2021-10-16 02:25:54,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:53" (2/3) ... [2021-10-16 02:25:54,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6906bfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:25:54, skipping insertion in model container [2021-10-16 02:25:54,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:54" (3/3) ... [2021-10-16 02:25:54,143 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-10-16 02:25:54,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:25:54,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:25:54,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:25:54,214 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, mConcurrency=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 [2021-10-16 02:25:54,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:25:54,251 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) [2021-10-16 02:25:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:25:54,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:25:54,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:25:54,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:25:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:25:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash 45328, now seen corresponding path program 1 times [2021-10-16 02:25:54,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:25:54,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597448780] [2021-10-16 02:25:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:25:54,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:25:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:25:54,388 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:25:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:25:54,424 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:25:54,426 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:25:54,427 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:54,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:25:54,436 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:25:54,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:25:54 BoogieIcfgContainer [2021-10-16 02:25:54,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:25:54,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:25:54,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:25:54,453 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:25:54,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:54" (3/4) ... [2021-10-16 02:25:54,457 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:25:54,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:25:54,460 INFO L168 Benchmark]: Toolchain (without parser) took 952.62 ms. Allocated memory is still 125.8 MB. Free memory was 92.5 MB in the beginning and 76.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:54,461 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:54,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.30 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 101.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:54,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 99.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:54,463 INFO L168 Benchmark]: Boogie Preprocessor took 18.53 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.1 MB in the end (delta: 793.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:54,464 INFO L168 Benchmark]: RCFGBuilder took 297.38 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 89.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:54,464 INFO L168 Benchmark]: TraceAbstraction took 316.39 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 76.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:54,465 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 125.8 MB. Free memory was 76.4 MB in the beginning and 76.1 MB in the end (delta: 314.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:54,469 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 88.1 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.30 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 101.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 99.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.53 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.1 MB in the end (delta: 793.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 297.38 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 89.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 316.39 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 76.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 125.8 MB. Free memory was 76.4 MB in the beginning and 76.1 MB in the end (delta: 314.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 230.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 18.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.4ms SsaConstructionTime, 30.9ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-16 02:25:54,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:25:56,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:25:56,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:25:56,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:25:56,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:25:56,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:25:56,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:25:56,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:25:56,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:25:56,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:25:56,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:25:56,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:25:56,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:25:56,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:25:56,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:25:56,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:25:56,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:25:56,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:25:56,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:25:56,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:25:56,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:25:56,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:25:56,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:25:56,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:25:56,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:25:56,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:25:56,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:25:56,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:25:56,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:25:56,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:25:56,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:25:56,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:25:56,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:25:56,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:25:56,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:25:56,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:25:56,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:25:56,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:25:56,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:25:56,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:25:56,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:25:56,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:25:56,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:25:56,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:25:56,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:25:56,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:25:56,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:25:56,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:25:56,974 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:25:56,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:25:56,975 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:25:56,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:25:56,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:25:56,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:25:56,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:25:56,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:25:56,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:25:56,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:25:56,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:25:56,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:25:56,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:25:56,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:25:56,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:25:56,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:25:56,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:25:56,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:25:56,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:25:56,981 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:25:56,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:25:56,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:25:56,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:25:56,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:25:56,983 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb25cff741a4983d608d95bf512bab62b5988d3b [2021-10-16 02:25:57,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:25:57,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:25:57,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:25:57,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:25:57,443 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:25:57,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-10-16 02:25:57,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/60c85cb69/5f5c3fad8726459d837b8e06aba65b03/FLAG9764977ab [2021-10-16 02:25:57,951 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:25:57,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-10-16 02:25:57,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/60c85cb69/5f5c3fad8726459d837b8e06aba65b03/FLAG9764977ab [2021-10-16 02:25:58,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/data/60c85cb69/5f5c3fad8726459d837b8e06aba65b03 [2021-10-16 02:25:58,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:25:58,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:25:58,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:25:58,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:25:58,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:25:58,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30514d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58, skipping insertion in model container [2021-10-16 02:25:58,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:25:58,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:25:58,580 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-10-16 02:25:58,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:25:58,612 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:25:58,640 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_cd7d095e-d218-4f05-82c8-8abba7eb2287/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-10-16 02:25:58,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:25:58,660 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:25:58,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58 WrapperNode [2021-10-16 02:25:58,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:25:58,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:25:58,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:25:58,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:25:58,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:25:58,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:25:58,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:25:58,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:25:58,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:25:58,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:25:58,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:25:58,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:25:58,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (1/1) ... [2021-10-16 02:25:58,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:25:58,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:25:58,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:25:58,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:25:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:25:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:25:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:25:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:25:59,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:25:59,095 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:25:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:59 BoogieIcfgContainer [2021-10-16 02:25:59,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:25:59,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:25:59,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:25:59,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:25:59,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:25:58" (1/3) ... [2021-10-16 02:25:59,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143d27be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:25:59, skipping insertion in model container [2021-10-16 02:25:59,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:25:58" (2/3) ... [2021-10-16 02:25:59,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143d27be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:25:59, skipping insertion in model container [2021-10-16 02:25:59,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:59" (3/3) ... [2021-10-16 02:25:59,104 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-10-16 02:25:59,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:25:59,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:25:59,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:25:59,160 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, mConcurrency=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 [2021-10-16 02:25:59,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:25:59,188 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) [2021-10-16 02:25:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:25:59,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:25:59,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:25:59,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:25:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:25:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-16 02:25:59,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:25:59,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691521091] [2021-10-16 02:25:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:25:59,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:25:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:25:59,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:25:59,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:25:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:25:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:25:59,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:59,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:59,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:25:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691521091] [2021-10-16 02:25:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691521091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:25:59,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:25:59,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:25:59,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815502273] [2021-10-16 02:25:59,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:25:59,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:25:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:25:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:25:59,651 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) [2021-10-16 02:25:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:25:59,670 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-16 02:25:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:25:59,672 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 [2021-10-16 02:25:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:25:59,678 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:25:59,678 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:25:59,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:25:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:25:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:25:59,696 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) [2021-10-16 02:25:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:25:59,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 02:25:59,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:25:59,698 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:25:59,698 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) [2021-10-16 02:25:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:25:59,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:25:59,701 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:59,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:25:59,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:25:59,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:25:59,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:25:59,949 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:25:59,949 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:25:59,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:25:59,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:25:59,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-16 02:25:59,951 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))))))) [2021-10-16 02:25:59,951 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-16 02:25:59,951 INFO L857 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-10-16 02:25:59,951 INFO L857 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-10-16 02:25:59,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:25:59,960 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:25:59,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:25:59 BoogieIcfgContainer [2021-10-16 02:25:59,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:25:59,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:25:59,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:25:59,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:25:59,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:25:59" (3/4) ... [2021-10-16 02:25:59,973 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:25:59,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:25:59,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:25:59,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:25:59,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:26:00,008 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)))) [2021-10-16 02:26:00,014 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:26:00,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:26:00,016 INFO L168 Benchmark]: Toolchain (without parser) took 1659.56 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 46.0 MB in the beginning and 47.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,017 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:00,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.44 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 35.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.76 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 48.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,018 INFO L168 Benchmark]: Boogie Preprocessor took 49.30 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:00,019 INFO L168 Benchmark]: RCFGBuilder took 317.36 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 39.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,020 INFO L168 Benchmark]: TraceAbstraction took 869.53 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 50.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,021 INFO L168 Benchmark]: Witness Printer took 45.37 ms. Allocated memory is still 81.8 MB. Free memory was 50.4 MB in the beginning and 47.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:00,024 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 65.0 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.44 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 35.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.76 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 48.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.30 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 317.36 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 39.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 869.53 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 50.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.37 ms. Allocated memory is still 81.8 MB. Free memory was 50.4 MB in the beginning and 47.9 MB in the end (delta: 2.5 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 803.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 24.3ms, AutomataDifference: 41.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 41.0ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 25.9ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 9.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.2ms SsaConstructionTime, 41.0ms SatisfiabilityAnalysisTime, 202.5ms 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 [2021-10-16 02:26:00,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:26:00,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:26:00,033 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:26:00,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:26:00,034 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:26:00,034 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! [2021-10-16 02:26:00,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d095e-d218-4f05-82c8-8abba7eb2287/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...