./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan --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 da5d51ccb2e261fc3d97480f2a3cc24f3caac524 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan --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 da5d51ccb2e261fc3d97480f2a3cc24f3caac524 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: FP term ((_ to_fp 15 113) currentRoundingMode_0 termITE_1) with type whose size is 15/113 is not supported, only Float32 (8/24) or Float64 (11/53) types are supported in default mode. Try the experimental solver via --fp-exp. Note: There are known issues with the experimental solver, use at your own risk. --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:37:09,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:37:09,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:37:09,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:37:09,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:37:09,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:37:09,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:37:09,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:37:09,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:37:09,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:37:09,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:37:09,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:37:09,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:37:09,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:37:09,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:37:09,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:37:09,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:37:09,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:37:09,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:37:09,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:37:09,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:37:09,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:37:09,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:37:09,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:37:09,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:37:09,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:37:09,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:37:09,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:37:09,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:37:09,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:37:09,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:37:09,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:37:09,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:37:09,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:37:09,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:37:09,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:37:09,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:37:09,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:37:09,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:37:09,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:37:09,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:37:09,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:37:09,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:37:09,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:37:09,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:37:09,373 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:37:09,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:37:09,373 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:37:09,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:37:09,374 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:37:09,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:37:09,374 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:37:09,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:37:09,376 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:37:09,376 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:37:09,376 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:37:09,377 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:37:09,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:37:09,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:37:09,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:37:09,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:37:09,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:37:09,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:37:09,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:37:09,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:37:09,379 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:37:09,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:37:09,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:37:09,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:37:09,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:37:09,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:37:09,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:37:09,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:37:09,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:37:09,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:37:09,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:37:09,382 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:37:09,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:37:09,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:37:09,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:37:09,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:37:09,384 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-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2020-12-03 12:37:09,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:37:09,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:37:09,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:37:09,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:37:09,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:37:09,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-03 12:37:09,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/9753a8341/a52e4cd79dae4e3e85936a00f92ef684/FLAG42342371e [2020-12-03 12:37:10,236 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:37:10,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-03 12:37:10,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/9753a8341/a52e4cd79dae4e3e85936a00f92ef684/FLAG42342371e [2020-12-03 12:37:10,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/9753a8341/a52e4cd79dae4e3e85936a00f92ef684 [2020-12-03 12:37:10,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:37:10,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:37:10,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:10,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:37:10,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:37:10,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:10,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73fa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10, skipping insertion in model container [2020-12-03 12:37:10,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:10,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:37:10,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:37:10,878 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-03 12:37:10,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:10,936 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:37:10,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-03 12:37:10,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:10,977 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:37:10,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10 WrapperNode [2020-12-03 12:37:10,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:10,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:10,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:37:10,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:37:10,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:11,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:37:11,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:37:11,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:37:11,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... [2020-12-03 12:37:11,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:37:11,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:37:11,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:37:11,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:37:11,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:37:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:37:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:37:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:37:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:37:11,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:37:11,526 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:37:11,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:11 BoogieIcfgContainer [2020-12-03 12:37:11,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:37:11,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:37:11,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:37:11,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:37:11,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:37:10" (1/3) ... [2020-12-03 12:37:11,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c65a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:11, skipping insertion in model container [2020-12-03 12:37:11,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:10" (2/3) ... [2020-12-03 12:37:11,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c65a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:11, skipping insertion in model container [2020-12-03 12:37:11,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:11" (3/3) ... [2020-12-03 12:37:11,537 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2020-12-03 12:37:11,564 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:37:11,568 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:37:11,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:37:11,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:37:11,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:37:11,635 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:37:11,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:37:11,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:37:11,635 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:37:11,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:37:11,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:37:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-03 12:37:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:37:11,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:11,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:37:11,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1850503, now seen corresponding path program 1 times [2020-12-03 12:37:11,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:11,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708777521] [2020-12-03 12:37:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:37:11,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:37:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:37:11,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:37:11,859 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:37:11,860 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:37:11,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:37:11,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:37:11 BoogieIcfgContainer [2020-12-03 12:37:11,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:37:11,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:37:11,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:37:11,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:37:11,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:11" (3/4) ... [2020-12-03 12:37:11,897 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:37:11,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:37:11,902 INFO L168 Benchmark]: Toolchain (without parser) took 1288.39 ms. Allocated memory is still 88.1 MB. Free memory was 55.9 MB in the beginning and 37.2 MB in the end (delta: 18.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:11,904 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:11,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.58 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 65.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:11,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.27 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:11,908 INFO L168 Benchmark]: Boogie Preprocessor took 46.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:11,910 INFO L168 Benchmark]: RCFGBuilder took 456.95 ms. Allocated memory is still 88.1 MB. Free memory was 63.6 MB in the beginning and 49.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:11,911 INFO L168 Benchmark]: TraceAbstraction took 358.65 ms. Allocated memory is still 88.1 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:11,912 INFO L168 Benchmark]: Witness Printer took 7.86 ms. Allocated memory is still 88.1 MB. Free memory was 37.5 MB in the beginning and 37.2 MB in the end (delta: 362.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:11,923 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 44.8 MB in the beginning and 44.7 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.58 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 65.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.27 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 63.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 456.95 ms. Allocated memory is still 88.1 MB. Free memory was 63.6 MB in the beginning and 49.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 358.65 ms. Allocated memory is still 88.1 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.86 ms. Allocated memory is still 88.1 MB. Free memory was 37.5 MB in the beginning and 37.2 MB in the end (delta: 362.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; [L12] COND FALSE !(x != 0) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:37:14,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:37:14,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:37:14,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:37:14,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:37:14,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:37:14,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:37:14,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:37:14,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:37:14,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:37:14,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:37:14,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:37:14,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:37:14,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:37:14,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:37:14,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:37:14,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:37:14,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:37:14,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:37:14,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:37:14,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:37:14,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:37:14,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:37:14,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:37:14,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:37:14,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:37:14,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:37:14,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:37:14,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:37:14,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:37:14,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:37:14,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:37:14,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:37:14,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:37:14,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:37:14,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:37:14,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:37:14,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:37:14,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:37:14,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:37:14,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:37:14,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:37:14,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:37:14,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:37:14,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:37:14,689 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:37:14,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:37:14,690 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:37:14,690 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:37:14,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:37:14,690 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:37:14,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:37:14,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:37:14,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:37:14,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:37:14,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:37:14,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:37:14,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:37:14,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:37:14,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:37:14,695 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:37:14,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:37:14,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:37:14,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:37:14,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:37:14,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:37:14,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:37:14,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:37:14,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:37:14,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:37:14,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:37:14,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:37:14,697 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:37:14,698 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:37:14,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:37:14,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:37:14,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:37:14,699 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-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2020-12-03 12:37:15,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:37:15,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:37:15,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:37:15,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:37:15,189 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:37:15,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-03 12:37:15,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/3cc3df8a3/99837bdb1e464528b33f7919efd2ae16/FLAG7b11ede05 [2020-12-03 12:37:15,805 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:37:15,806 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-03 12:37:15,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/3cc3df8a3/99837bdb1e464528b33f7919efd2ae16/FLAG7b11ede05 [2020-12-03 12:37:16,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/data/3cc3df8a3/99837bdb1e464528b33f7919efd2ae16 [2020-12-03 12:37:16,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:37:16,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:37:16,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:16,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:37:16,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:37:16,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dd53ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16, skipping insertion in model container [2020-12-03 12:37:16,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:37:16,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:37:16,396 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-03 12:37:16,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:16,426 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:37:16,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-03 12:37:16,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:37:16,463 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:37:16,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16 WrapperNode [2020-12-03 12:37:16,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:37:16,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:16,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:37:16,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:37:16,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:37:16,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:37:16,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:37:16,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:37:16,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... [2020-12-03 12:37:16,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:37:16,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:37:16,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:37:16,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:37:16,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:37:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:37:16,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:37:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:37:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:37:19,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:37:19,101 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:37:19,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:19 BoogieIcfgContainer [2020-12-03 12:37:19,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:37:19,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:37:19,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:37:19,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:37:19,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:37:16" (1/3) ... [2020-12-03 12:37:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de2cd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:19, skipping insertion in model container [2020-12-03 12:37:19,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:37:16" (2/3) ... [2020-12-03 12:37:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de2cd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:37:19, skipping insertion in model container [2020-12-03 12:37:19,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:37:19" (3/3) ... [2020-12-03 12:37:19,111 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2020-12-03 12:37:19,126 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:37:19,129 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:37:19,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:37:19,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:37:19,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:37:19,168 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:37:19,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:37:19,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:37:19,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:37:19,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:37:19,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:37:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-03 12:37:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:37:19,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:19,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:37:19,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-03 12:37:19,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:37:19,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746956109] [2020-12-03 12:37:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-03 12:37:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:19,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-03 12:37:19,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:37:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:19,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:37:19,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746956109] [2020-12-03 12:37:19,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:19,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:37:19,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701675672] [2020-12-03 12:37:19,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:37:19,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:37:19,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:37:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:37:19,463 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-03 12:37:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:21,765 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-03 12:37:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:37:21,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:37:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:21,776 INFO L225 Difference]: With dead ends: 20 [2020-12-03 12:37:21,776 INFO L226 Difference]: Without dead ends: 8 [2020-12-03 12:37:21,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:37:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-03 12:37:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-03 12:37:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-03 12:37:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-03 12:37:21,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-03 12:37:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:21,809 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-03 12:37:21,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:37:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-03 12:37:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:37:21,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:21,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:22,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:37:22,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-03 12:37:22,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:37:22,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312390324] [2020-12-03 12:37:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-03 12:37:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:22,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:37:22,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:37:24,769 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~0 (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))))) is different from true [2020-12-03 12:37:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-12-03 12:37:24,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:37:26,864 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero c_ULTIMATE.start_main_~x~0) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2020-12-03 12:37:28,904 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero c_ULTIMATE.start_main_~x~0) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2020-12-03 12:37:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-12-03 12:37:30,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312390324] [2020-12-03 12:37:30,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1990828610] [2020-12-03 12:37:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_099307d6-27b2-4867-950d-5fc9fff69b97/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt [2020-12-03 12:37:30,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt [2020-12-03 12:37:30,317 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: FP term ((_ to_fp 15 113) currentRoundingMode_0 termITE_1) with type whose size is 15/113 is not supported, only Float32 (8/24) or Float64 (11/53) types are supported in default mode. Try the experimental solver via --fp-exp. Note: There are known issues with the experimental solver, use at your own risk. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: FP term ((_ to_fp 15 113) currentRoundingMode_0 termITE_1) with type whose size is 15/113 is not supported, only Float32 (8/24) or Float64 (11/53) types are supported in default mode. Try the experimental solver via --fp-exp. Note: There are known issues with the experimental solver, use at your own risk. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1454) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) ... 29 more [2020-12-03 12:37:30,323 INFO L168 Benchmark]: Toolchain (without parser) took 14153.36 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 33.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:30,324 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:30,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.01 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 44.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:30,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.66 ms. Allocated memory is still 75.5 MB. Free memory was 44.7 MB in the beginning and 60.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:30,327 INFO L168 Benchmark]: Boogie Preprocessor took 52.23 ms. Allocated memory is still 75.5 MB. Free memory was 60.1 MB in the beginning and 58.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:30,327 INFO L168 Benchmark]: RCFGBuilder took 2511.21 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 47.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:30,328 INFO L168 Benchmark]: TraceAbstraction took 11215.68 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 33.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:30,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.6 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.01 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 44.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.66 ms. Allocated memory is still 75.5 MB. Free memory was 44.7 MB in the beginning and 60.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.23 ms. Allocated memory is still 75.5 MB. Free memory was 60.1 MB in the beginning and 58.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2511.21 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 47.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11215.68 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 33.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: FP term ((_ to_fp 15 113) currentRoundingMode_0 termITE_1) with type whose size is 15/113 is not supported, only Float32 (8/24) or Float64 (11/53) types are supported in default mode. Try the experimental solver via --fp-exp. Note: There are known issues with the experimental solver, use at your own risk. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: FP term ((_ to_fp 15 113) currentRoundingMode_0 termITE_1) with type whose size is 15/113 is not supported, only Float32 (8/24) or Float64 (11/53) types are supported in default mode. Try the experimental solver via --fp-exp. Note: There are known issues with the experimental solver, use at your own risk.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...