./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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:04:43,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:04:43,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:04:43,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:04:43,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:04:43,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:04:43,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:04:43,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:04:43,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:04:43,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:04:43,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:04:43,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:04:43,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:04:43,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:04:43,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:04:43,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:04:43,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:04:43,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:04:43,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:04:43,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:04:43,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:04:43,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:04:43,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:04:43,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:04:43,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:04:43,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:04:43,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:04:43,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:04:43,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:04:43,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:04:43,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:04:43,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:04:43,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:04:43,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:04:43,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:04:43,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:04:43,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:04:43,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:04:43,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:04:43,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:04:43,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:04:43,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:04:43,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:04:43,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:04:43,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:04:43,962 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:04:43,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:04:43,962 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:04:43,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:04:43,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:04:43,963 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:04:43,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:04:43,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:04:43,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:04:43,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:04:43,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:04:43,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:04:43,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:04:43,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:04:43,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:04:43,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:04:43,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:04:43,967 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2020-12-09 16:04:44,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:04:44,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:04:44,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:04:44,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:04:44,160 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:04:44,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-09 16:04:44,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/32bd75d6c/ae7206e89e3043f29dc202f15a26551c/FLAGb0fd012f5 [2020-12-09 16:04:44,552 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:04:44,552 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-09 16:04:44,557 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/32bd75d6c/ae7206e89e3043f29dc202f15a26551c/FLAGb0fd012f5 [2020-12-09 16:04:44,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/32bd75d6c/ae7206e89e3043f29dc202f15a26551c [2020-12-09 16:04:44,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:04:44,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:04:44,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:04:44,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:04:44,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:04:44,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5566be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44, skipping insertion in model container [2020-12-09 16:04:44,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:04:44,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:04:44,692 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-09 16:04:44,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:04:44,712 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:04:44,721 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-09 16:04:44,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:04:44,734 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:04:44,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44 WrapperNode [2020-12-09 16:04:44,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:04:44,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:04:44,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:04:44,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:04:44,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:04:44,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:04:44,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:04:44,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:04:44,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... [2020-12-09 16:04:44,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:04:44,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:04:44,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:04:44,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:04:44,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:04:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:04:44,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:04:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:04:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:04:45,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:04:45,015 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:04:45,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:04:45 BoogieIcfgContainer [2020-12-09 16:04:45,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:04:45,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:04:45,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:04:45,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:04:45,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:04:44" (1/3) ... [2020-12-09 16:04:45,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc842a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:04:45, skipping insertion in model container [2020-12-09 16:04:45,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:44" (2/3) ... [2020-12-09 16:04:45,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc842a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:04:45, skipping insertion in model container [2020-12-09 16:04:45,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:04:45" (3/3) ... [2020-12-09 16:04:45,026 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2020-12-09 16:04:45,041 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:04:45,044 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:04:45,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:04:45,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:04:45,077 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:04:45,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:04:45,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:04:45,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:04:45,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:04:45,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:04:45,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:04:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-09 16:04:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 16:04:45,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:04:45,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 16:04:45,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:04:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:04:45,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1850503, now seen corresponding path program 1 times [2020-12-09 16:04:45,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:04:45,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583227398] [2020-12-09 16:04:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:04:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:04:45,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:04:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:04:45,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:04:45,241 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 16:04:45,241 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 16:04:45,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:04:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:04:45 BoogieIcfgContainer [2020-12-09 16:04:45,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:04:45,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:04:45,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:04:45,260 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:04:45,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:04:45" (3/4) ... [2020-12-09 16:04:45,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 16:04:45,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:04:45,266 INFO L168 Benchmark]: Toolchain (without parser) took 695.82 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 46.1 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:04:45,267 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 98.6 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:04:45,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.86 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 74.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:04:45,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:04:45,269 INFO L168 Benchmark]: Boogie Preprocessor took 18.81 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:04:45,270 INFO L168 Benchmark]: RCFGBuilder took 237.10 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 58.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:04:45,270 INFO L168 Benchmark]: TraceAbstraction took 240.26 ms. Allocated memory is still 98.6 MB. Free memory was 58.3 MB in the beginning and 46.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:04:45,271 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 98.6 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:04:45,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 98.6 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.86 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 74.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.81 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.10 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 58.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 240.26 ms. Allocated memory is still 98.6 MB. Free memory was 58.3 MB in the beginning and 46.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 98.6 MB. Free memory is still 46.1 MB. 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: 0.1s, 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 [2020-12-09 16:04:46,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:04:46,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:04:46,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:04:46,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:04:46,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:04:46,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:04:46,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:04:46,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:04:46,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:04:46,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:04:46,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:04:46,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:04:46,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:04:46,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:04:46,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:04:46,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:04:46,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:04:46,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:04:46,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:04:46,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:04:46,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:04:46,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:04:46,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:04:46,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:04:46,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:04:46,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:04:46,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:04:46,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:04:46,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:04:46,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:04:46,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:04:46,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:04:46,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:04:46,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:04:46,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:04:46,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:04:46,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:04:46,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:04:46,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:04:46,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:04:46,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 16:04:46,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:04:46,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:04:46,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:04:46,946 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:04:46,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:04:46,947 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:04:46,947 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:04:46,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:04:46,947 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:04:46,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:04:46,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:04:46,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:04:46,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:04:46,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:04:46,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:04:46,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:04:46,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:04:46,949 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 16:04:46,950 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 16:04:46,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:04:46,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:04:46,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:04:46,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:04:46,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:04:46,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 16:04:46,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:04:46,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:04:46,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:04:46,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:04:46,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:04:46,952 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 16:04:46,952 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 16:04:46,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:04:46,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:04:46,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:04:46,953 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2020-12-09 16:04:47,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:04:47,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:04:47,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:04:47,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:04:47,197 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:04:47,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-09 16:04:47,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/05229b7ae/48bf363b34f54b57b80591fefeff9b92/FLAGe0f517b86 [2020-12-09 16:04:47,606 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:04:47,606 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2020-12-09 16:04:47,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/05229b7ae/48bf363b34f54b57b80591fefeff9b92/FLAGe0f517b86 [2020-12-09 16:04:47,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/bin/utaipan/data/05229b7ae/48bf363b34f54b57b80591fefeff9b92 [2020-12-09 16:04:47,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:04:47,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:04:47,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:04:47,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:04:47,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:04:47,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bed241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47, skipping insertion in model container [2020-12-09 16:04:47,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:04:47,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:04:47,738 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-09 16:04:47,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:04:47,758 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:04:47,766 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_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2020-12-09 16:04:47,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:04:47,780 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:04:47,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47 WrapperNode [2020-12-09 16:04:47,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:04:47,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:04:47,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:04:47,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:04:47,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:04:47,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:04:47,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:04:47,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:04:47,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... [2020-12-09 16:04:47,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:04:47,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:04:47,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:04:47,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:04:47,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:04:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:04:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:04:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 16:04:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:04:50,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:04:50,135 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:04:50,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:04:50 BoogieIcfgContainer [2020-12-09 16:04:50,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:04:50,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:04:50,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:04:50,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:04:50,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:04:47" (1/3) ... [2020-12-09 16:04:50,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f70bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:04:50, skipping insertion in model container [2020-12-09 16:04:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:04:47" (2/3) ... [2020-12-09 16:04:50,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f70bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:04:50, skipping insertion in model container [2020-12-09 16:04:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:04:50" (3/3) ... [2020-12-09 16:04:50,143 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2020-12-09 16:04:50,154 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:04:50,156 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:04:50,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:04:50,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:04:50,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:04:50,180 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:04:50,180 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:04:50,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:04:50,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:04:50,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:04:50,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:04:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 16:04:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:04:50,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:04:50,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:04:50,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:04:50,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:04:50,194 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-09 16:04:50,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:04:50,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559807398] [2020-12-09 16:04:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:04:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:04:50,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:04:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:04:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:04:50,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 16:04:50,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559807398] [2020-12-09 16:04:50,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:04:50,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:04:50,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985916759] [2020-12-09 16:04:50,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:04:50,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 16:04:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:04:50,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:04:50,344 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-09 16:04:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:04:52,619 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-09 16:04:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:04:52,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 16:04:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:04:52,627 INFO L225 Difference]: With dead ends: 20 [2020-12-09 16:04:52,627 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 16:04:52,629 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 [2020-12-09 16:04:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 16:04:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 16:04:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 16:04:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 16:04:52,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 16:04:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:04:52,652 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 16:04:52,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:04:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 16:04:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 16:04:52,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:04:52,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:04:52,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 16:04:52,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:04:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:04:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-09 16:04:52,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:04:52,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133111199] [2020-12-09 16:04:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:04:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:04:53,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:04:53,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:04:56,524 WARN L197 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 16:04:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:04:56,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:04:58,603 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 [2020-12-09 16:05:00,638 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 [2020-12-09 16:05:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-12-09 16:05:01,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133111199] [2020-12-09 16:05:01,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7539932] [2020-12-09 16:05:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc50887d-4c6d-40da-a0ec-2c7556b8f75f/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 [2020-12-09 16:05:01,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 16:05:01,601 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 [2020-12-09 16:05:01,606 INFO L168 Benchmark]: Toolchain (without parser) took 13982.69 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 36.1 MB in the beginning and 46.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:05:01,607 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:05:01,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.07 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 41.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:05:01,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.16 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 41.5 MB in the beginning and 57.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:05:01,610 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 73.4 MB. Free memory was 57.6 MB in the beginning and 56.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:05:01,611 INFO L168 Benchmark]: RCFGBuilder took 2291.28 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 44.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:05:01,612 INFO L168 Benchmark]: TraceAbstraction took 11465.99 ms. Allocated memory is still 73.4 MB. Free memory was 44.3 MB in the beginning and 46.2 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:05:01,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 162.07 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 41.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.16 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 41.5 MB in the beginning and 57.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 73.4 MB. Free memory was 57.6 MB in the beginning and 56.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2291.28 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 44.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11465.99 ms. Allocated memory is still 73.4 MB. Free memory was 44.3 MB in the beginning and 46.2 MB in the end (delta: -1.9 MB). There was no memory consumed. 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...