./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_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI --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_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI --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 [2021-10-11 02:28:21,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:21,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:22,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:22,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:22,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:22,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:22,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:22,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:22,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:22,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:22,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:22,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:22,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:22,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:22,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:22,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:22,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:22,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:22,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:22,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:22,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:22,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:22,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:22,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:22,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:22,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:22,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:22,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:22,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:22,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:22,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:22,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:22,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:22,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:22,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:22,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:22,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:22,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:22,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:22,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:22,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:22,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:22,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:22,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:22,106 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:22,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:22,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:22,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:22,107 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:22,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:22,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:22,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:22,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:22,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:22,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:22,108 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:22,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:22,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:22,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:22,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:22,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:22,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:22,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:22,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:22,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:22,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:22,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:22,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:22,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:22,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:22,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:22,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:22,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:22,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:22,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:22,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:22,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:22,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:22,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:22,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:22,115 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2021-10-11 02:28:22,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:22,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:22,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:22,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:22,483 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:22,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2021-10-11 02:28:22,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/5a9144605/76c5fdd4b63b42d4b7513ec3a2c46741/FLAG73c4d567a [2021-10-11 02:28:23,118 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:23,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2021-10-11 02:28:23,130 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/5a9144605/76c5fdd4b63b42d4b7513ec3a2c46741/FLAG73c4d567a [2021-10-11 02:28:23,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/5a9144605/76c5fdd4b63b42d4b7513ec3a2c46741 [2021-10-11 02:28:23,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:23,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:23,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:23,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:23,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:23,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cec99e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23, skipping insertion in model container [2021-10-11 02:28:23,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:23,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:23,703 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2021-10-11 02:28:23,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:23,733 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:23,745 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2021-10-11 02:28:23,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:23,764 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:23,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23 WrapperNode [2021-10-11 02:28:23,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:23,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:23,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:23,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:23,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:23,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:23,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:23,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:23,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... [2021-10-11 02:28:23,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:23,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:23,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:23,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:23,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:24,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:24,298 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:24,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24 BoogieIcfgContainer [2021-10-11 02:28:24,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:24,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:24,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:24,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:24,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:23" (1/3) ... [2021-10-11 02:28:24,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a47fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:24, skipping insertion in model container [2021-10-11 02:28:24,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:23" (2/3) ... [2021-10-11 02:28:24,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a47fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:24, skipping insertion in model container [2021-10-11 02:28:24,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24" (3/3) ... [2021-10-11 02:28:24,310 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2021-10-11 02:28:24,324 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:24,327 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:24,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:24,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:24,362 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:24,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:24,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:24,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:24,362 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:24,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:24,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:28:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:28:24,381 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:24,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:28:24,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:24,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1850503, now seen corresponding path program 1 times [2021-10-11 02:28:24,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:24,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003375339] [2021-10-11 02:28:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:24,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:24,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:24,622 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:28:24,623 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:24,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:24,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:24 BoogieIcfgContainer [2021-10-11 02:28:24,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:24,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:24,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:24,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:24,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24" (3/4) ... [2021-10-11 02:28:24,660 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:24,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:24,664 INFO L168 Benchmark]: Toolchain (without parser) took 1171.98 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 46.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:24,666 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 75.9 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:24,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 100.7 MB. Free memory was 59.7 MB in the beginning and 75.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:24,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:24,671 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:24,672 INFO L168 Benchmark]: RCFGBuilder took 477.11 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 58.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:24,673 INFO L168 Benchmark]: TraceAbstraction took 350.19 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 46.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:24,674 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 100.7 MB. Free memory was 46.5 MB in the beginning and 46.2 MB in the end (delta: 310.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:24,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 75.9 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 100.7 MB. Free memory was 59.7 MB in the beginning and 75.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 477.11 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 58.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 350.19 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 46.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 100.7 MB. Free memory was 46.5 MB in the beginning and 46.2 MB in the end (delta: 310.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; [L12] COND FALSE !(x != 0) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:27,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:27,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:27,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:27,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:27,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:27,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:27,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:27,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:27,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:27,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:27,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:27,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:27,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:27,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:27,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:27,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:27,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:27,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:27,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:27,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:27,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:27,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:27,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:27,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:27,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:27,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:27,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:27,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:27,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:27,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:27,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:27,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:27,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:27,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:27,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:27,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:27,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:27,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:27,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:27,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:27,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:28:27,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:27,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:27,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:27,391 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:27,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:27,391 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:27,392 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:27,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:27,393 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:27,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:27,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:27,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:27,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:27,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:27,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:27,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:27,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:27,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:28:27,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:28:27,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:27,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:27,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:27,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:27,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:27,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:28:27,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:27,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:27,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:27,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:27,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:27,401 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:28:27,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:27,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:27,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:27,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:27,403 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da5d51ccb2e261fc3d97480f2a3cc24f3caac524 [2021-10-11 02:28:27,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:27,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:27,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:27,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:27,886 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:27,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2021-10-11 02:28:27,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/635d15a29/81867607f21647ba9998769eacc2e9a0/FLAG8fa260e14 [2021-10-11 02:28:28,479 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:28,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c [2021-10-11 02:28:28,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/635d15a29/81867607f21647ba9998769eacc2e9a0/FLAG8fa260e14 [2021-10-11 02:28:28,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/data/635d15a29/81867607f21647ba9998769eacc2e9a0 [2021-10-11 02:28:28,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:28,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:28,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:28,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:28,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:28,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:28" (1/1) ... [2021-10-11 02:28:28,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab7c301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:28, skipping insertion in model container [2021-10-11 02:28:28,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:28" (1/1) ... [2021-10-11 02:28:28,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:28,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:28,995 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2021-10-11 02:28:29,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:29,026 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:29,039 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/sv-benchmarks/c/floats-esbmc-regression/digits_bad_while.c[321,334] [2021-10-11 02:28:29,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:29,058 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:29,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29 WrapperNode [2021-10-11 02:28:29,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:29,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:29,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:29,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:29,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:29,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:29,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:29,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:29,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... [2021-10-11 02:28:29,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:29,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:29,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:29,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:29,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:28:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:31,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:31,683 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:31,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:31 BoogieIcfgContainer [2021-10-11 02:28:31,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:31,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:31,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:31,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:31,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:28" (1/3) ... [2021-10-11 02:28:31,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195f6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:31, skipping insertion in model container [2021-10-11 02:28:31,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:29" (2/3) ... [2021-10-11 02:28:31,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195f6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:31, skipping insertion in model container [2021-10-11 02:28:31,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:31" (3/3) ... [2021-10-11 02:28:31,693 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_bad_while.c [2021-10-11 02:28:31,707 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:31,710 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:31,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:31,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:31,744 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:31,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:31,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:31,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:31,745 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:31,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:31,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:28:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:31,762 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:31,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-11 02:28:31,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:31,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440501328] [2021-10-11 02:28:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:31,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:31,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:31,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440501328] [2021-10-11 02:28:31,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:31,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:31,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094801169] [2021-10-11 02:28:32,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:32,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:32,020 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:28:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:34,306 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-11 02:28:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:34,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:28:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:34,317 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:28:34,317 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:28:34,320 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 [2021-10-11 02:28:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:28:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:28:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:28:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:28:34,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-11 02:28:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:34,355 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:28:34,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:28:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:28:34,355 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:34,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:34,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:28:34,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-10-11 02:28:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:34,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991163437] [2021-10-11 02:28:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:35,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:39,289 WARN L197 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 20 [2021-10-11 02:28:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:39,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:41,381 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 [2021-10-11 02:28:43,426 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 [2021-10-11 02:28:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-11 02:28:44,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991163437] [2021-10-11 02:28:44,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [321860349] [2021-10-11 02:28:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e87e10f-0c94-4f09-9167-7a1efd5b6b6c/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:44,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:44,681 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 [2021-10-11 02:28:44,685 INFO L168 Benchmark]: Toolchain (without parser) took 15854.23 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 53.9 MB in the beginning and 78.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:44,685 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:44,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.34 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:44,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.70 ms. Allocated memory is still 69.2 MB. Free memory was 43.5 MB in the beginning and 53.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:44,689 INFO L168 Benchmark]: Boogie Preprocessor took 53.18 ms. Allocated memory is still 69.2 MB. Free memory was 53.5 MB in the beginning and 52.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:44,690 INFO L168 Benchmark]: RCFGBuilder took 2463.27 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 40.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:44,691 INFO L168 Benchmark]: TraceAbstraction took 12996.90 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 78.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:44,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.34 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.70 ms. Allocated memory is still 69.2 MB. Free memory was 43.5 MB in the beginning and 53.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.18 ms. Allocated memory is still 69.2 MB. Free memory was 53.5 MB in the beginning and 52.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2463.27 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 40.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12996.90 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 78.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 16.6 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...