./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/digits_for.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_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_for.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 7ed59bd961f948a27b7115afce81fd95dbe6b928 ................................................................................................................................................................................................................................................ 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_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_for.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 7ed59bd961f948a27b7115afce81fd95dbe6b928 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:35:29,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:29,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:29,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:29,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:29,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:29,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:29,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:29,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:29,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:29,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:29,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:29,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:29,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:29,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:29,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:29,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:29,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:29,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:29,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:29,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:29,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:29,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:29,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:29,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:29,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:29,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:29,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:29,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:29,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:29,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:29,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:29,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:29,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:29,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:29,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:29,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:29,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:29,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:29,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:29,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:29,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:35:29,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:29,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:29,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:29,363 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:29,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:29,364 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:29,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:29,364 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:29,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:29,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:29,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:29,366 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:29,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:29,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:29,366 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:29,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:29,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:29,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:29,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:29,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:29,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:29,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:29,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:29,369 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:35:29,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:29,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:29,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:29,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:29,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:29,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:29,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:29,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:29,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:29,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:29,374 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_67ac11b5-c183-4763-9113-ba9ab52359b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed59bd961f948a27b7115afce81fd95dbe6b928 [2020-12-03 12:35:29,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:29,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:29,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:29,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:29,692 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:29,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2020-12-03 12:35:29,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/0041f08c2/3e4f396ad58b48648befa20407b72cea/FLAG2cc424d8f [2020-12-03 12:35:30,211 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:30,212 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2020-12-03 12:35:30,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/0041f08c2/3e4f396ad58b48648befa20407b72cea/FLAG2cc424d8f [2020-12-03 12:35:30,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/0041f08c2/3e4f396ad58b48648befa20407b72cea [2020-12-03 12:35:30,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:30,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:30,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:30,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:30,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:30,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:30,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f195c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30, skipping insertion in model container [2020-12-03 12:35:30,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:30,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:30,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:30,840 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_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2020-12-03 12:35:30,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:30,892 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:30,912 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_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2020-12-03 12:35:30,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:30,934 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:30,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30 WrapperNode [2020-12-03 12:35:30,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:30,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:30,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:30,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:30,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:30,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:30,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:30,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:30,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:30,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:30,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:30,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... [2020-12-03 12:35:31,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:31,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:31,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:31,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:31,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 12:35:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:31,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:31,330 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:31,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:31 BoogieIcfgContainer [2020-12-03 12:35:31,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:31,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:31,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:31,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:31,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:30" (1/3) ... [2020-12-03 12:35:31,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d125fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:31, skipping insertion in model container [2020-12-03 12:35:31,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:30" (2/3) ... [2020-12-03 12:35:31,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d125fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:31, skipping insertion in model container [2020-12-03 12:35:31,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:31" (3/3) ... [2020-12-03 12:35:31,344 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_for.c [2020-12-03 12:35:31,359 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:31,363 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:35:31,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:35:31,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:31,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:31,398 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:31,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:31,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:31,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:31,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:31,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-03 12:35:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:35:31,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:31,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:35:31,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:31,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1882248, now seen corresponding path program 1 times [2020-12-03 12:35:31,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:31,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146795311] [2020-12-03 12:35:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:31,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:31,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:31,609 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:35:31,610 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:35:31,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:31,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:31 BoogieIcfgContainer [2020-12-03 12:35:31,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:31,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:31,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:31,643 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:31,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:31" (3/4) ... [2020-12-03 12:35:31,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:35:31,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:31,652 INFO L168 Benchmark]: Toolchain (without parser) took 1048.66 ms. Allocated memory is still 102.8 MB. Free memory was 66.4 MB in the beginning and 50.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:31,654 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 82.6 MB in the end (delta: 55.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:31,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.55 ms. Allocated memory is still 102.8 MB. Free memory was 66.2 MB in the beginning and 79.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:31,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.47 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:31,659 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 77.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:31,660 INFO L168 Benchmark]: RCFGBuilder took 317.00 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 62.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:31,661 INFO L168 Benchmark]: TraceAbstraction took 306.72 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 50.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:31,662 INFO L168 Benchmark]: Witness Printer took 5.93 ms. Allocated memory is still 102.8 MB. Free memory was 50.3 MB in the beginning and 50.0 MB in the end (delta: 312.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:31,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 82.6 MB in the end (delta: 55.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.55 ms. Allocated memory is still 102.8 MB. Free memory was 66.2 MB in the beginning and 79.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.47 ms. Allocated memory is still 102.8 MB. Free memory was 79.7 MB in the beginning and 78.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 77.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 317.00 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 62.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 306.72 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 50.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.93 ms. Allocated memory is still 102.8 MB. Free memory was 50.3 MB in the beginning and 50.0 MB in the end (delta: 312.1 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 11, 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; [L11] 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 12:35:34,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:34,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:34,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:34,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:34,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:34,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:34,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:34,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:34,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:34,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:34,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:34,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:34,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:34,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:34,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:34,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:34,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:34,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:34,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:34,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:34,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:34,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:34,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:34,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:34,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:34,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:34,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:34,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:34,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:34,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:34,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:34,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:34,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:34,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:34,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:34,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:34,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:34,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:34,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:34,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:34,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:35:34,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:34,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:34,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:34,317 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:34,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:34,318 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:34,318 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:34,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:34,318 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:34,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:34,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:34,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:34,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:34,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:34,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:34,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:34,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:35:34,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:35:34,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:35:34,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:34,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:34,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:34,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:34,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:34,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:35:34,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:34,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:34,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:34,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:34,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:34,326 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:35:34,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:35:34,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:34,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:34,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:34,327 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_67ac11b5-c183-4763-9113-ba9ab52359b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed59bd961f948a27b7115afce81fd95dbe6b928 [2020-12-03 12:35:34,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:34,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:34,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:34,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:34,780 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:34,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2020-12-03 12:35:34,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/3f4609a18/11ac6bb2146b4e36bc4913798121c51b/FLAGa0484bff3 [2020-12-03 12:35:35,365 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:35,366 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c [2020-12-03 12:35:35,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/3f4609a18/11ac6bb2146b4e36bc4913798121c51b/FLAGa0484bff3 [2020-12-03 12:35:35,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/bin/utaipan/data/3f4609a18/11ac6bb2146b4e36bc4913798121c51b [2020-12-03 12:35:35,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:35,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:35,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:35,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:35,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:35,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:35,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d8da97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35, skipping insertion in model container [2020-12-03 12:35:35,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:35,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:35,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:35,912 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_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2020-12-03 12:35:35,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:35,941 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:35,954 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_67ac11b5-c183-4763-9113-ba9ab52359b4/sv-benchmarks/c/floats-esbmc-regression/digits_for.c[315,328] [2020-12-03 12:35:35,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:35,975 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:35,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35 WrapperNode [2020-12-03 12:35:35,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:35,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:35,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:35,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:35,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:35,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:36,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:36,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:36,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:36,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... [2020-12-03 12:35:36,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:36,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:36,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:36,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:36,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 12:35:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:35:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:38,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:38,556 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:38,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:38 BoogieIcfgContainer [2020-12-03 12:35:38,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:38,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:38,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:38,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:38,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:35" (1/3) ... [2020-12-03 12:35:38,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4cb4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:38, skipping insertion in model container [2020-12-03 12:35:38,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:35" (2/3) ... [2020-12-03 12:35:38,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4cb4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:38, skipping insertion in model container [2020-12-03 12:35:38,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:38" (3/3) ... [2020-12-03 12:35:38,566 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_for.c [2020-12-03 12:35:38,580 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:38,584 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:35:38,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:35:38,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:38,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:38,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:38,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:38,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:38,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:38,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:38,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-03 12:35:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:35:38,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:38,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:35:38,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2020-12-03 12:35:38,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:35:38,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686706055] [2020-12-03 12:35:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 12:35:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:38,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-03 12:35:38,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:38,884 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 12:35:38,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:35:38,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686706055] [2020-12-03 12:35:38,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:38,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:38,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515665573] [2020-12-03 12:35:38,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:38,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:35:38,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:38,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:38,909 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-03 12:35:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:41,203 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-03 12:35:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:41,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:35:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:41,213 INFO L225 Difference]: With dead ends: 21 [2020-12-03 12:35:41,214 INFO L226 Difference]: Without dead ends: 9 [2020-12-03 12:35:41,217 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 12:35:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-03 12:35:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-03 12:35:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-03 12:35:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-03 12:35:41,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-12-03 12:35:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:41,244 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-03 12:35:41,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-03 12:35:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:35:41,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:41,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:35:41,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:35:41,457 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:41,458 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2020-12-03 12:35:41,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:35:41,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654357934] [2020-12-03 12:35:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 12:35:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:42,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:35:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:45,796 WARN L197 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-03 12:35:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:45,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:47,903 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 12:35:49,944 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 12:35:50,811 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 12:35:50,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654357934] [2020-12-03 12:35:50,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61600133] [2020-12-03 12:35:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ac11b5-c183-4763-9113-ba9ab52359b4/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 12:35:51,081 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 12:35:51,081 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 12:35:51,087 INFO L168 Benchmark]: Toolchain (without parser) took 15352.83 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 34.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,087 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.89 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 23.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.88 ms. Allocated memory is still 54.5 MB. Free memory was 22.9 MB in the beginning and 38.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,090 INFO L168 Benchmark]: Boogie Preprocessor took 62.53 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,090 INFO L168 Benchmark]: RCFGBuilder took 2452.68 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 25.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,091 INFO L168 Benchmark]: TraceAbstraction took 12525.02 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.8 MB in the beginning and 34.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.89 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 23.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.88 ms. Allocated memory is still 54.5 MB. Free memory was 22.9 MB in the beginning and 38.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.53 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2452.68 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 25.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12525.02 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.8 MB in the beginning and 34.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 4.2 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...