./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw --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 25249e4a5dfcdfed2078f190bfb36f4672db41bdb03e03d1de22de138ec215e0 ................................................................................................................................................................................................................................................................................................................................... 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_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw --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 25249e4a5dfcdfed2078f190bfb36f4672db41bdb03e03d1de22de138ec215e0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:37:54,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:37:54,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:37:54,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:37:54,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:37:54,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:37:55,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:37:55,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:37:55,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:37:55,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:37:55,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:37:55,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:37:55,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:37:55,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:37:55,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:37:55,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:37:55,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:37:55,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:37:55,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:37:55,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:37:55,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:37:55,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:37:55,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:37:55,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:37:55,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:37:55,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:37:55,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:37:55,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:37:55,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:37:55,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:37:55,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:37:55,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:37:55,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:37:55,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:37:55,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:37:55,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:37:55,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:37:55,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:37:55,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:37:55,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:37:55,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:37:55,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:37:55,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:37:55,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:37:55,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:37:55,080 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:37:55,080 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:37:55,081 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:37:55,081 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:37:55,081 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:37:55,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:37:55,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:37:55,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:37:55,086 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:37:55,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:37:55,087 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:37:55,087 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:37:55,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:37:55,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:37:55,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:37:55,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:37:55,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:37:55,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:37:55,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:37:55,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:37:55,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:37:55,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:37:55,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:37:55,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:37:55,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:37:55,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:37:55,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:37:55,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:37:55,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:37:55,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:37:55,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:37:55,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:37:55,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:37:55,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:37:55,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:37:55,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:37:55,096 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_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25249e4a5dfcdfed2078f190bfb36f4672db41bdb03e03d1de22de138ec215e0 [2021-10-20 05:37:55,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:37:55,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:37:55,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:37:55,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:37:55,378 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:37:55,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2021-10-20 05:37:55,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/5a1e8fe5b/6890652831d74a589040f4bc1b197fee/FLAGa2f372e15 [2021-10-20 05:37:55,864 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:37:55,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2021-10-20 05:37:55,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/5a1e8fe5b/6890652831d74a589040f4bc1b197fee/FLAGa2f372e15 [2021-10-20 05:37:56,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/5a1e8fe5b/6890652831d74a589040f4bc1b197fee [2021-10-20 05:37:56,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:37:56,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:37:56,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:37:56,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:37:56,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:37:56,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3fa720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56, skipping insertion in model container [2021-10-20 05:37:56,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:37:56,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:37:56,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c[3190,3203] [2021-10-20 05:37:56,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:37:56,510 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:37:56,570 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c[3190,3203] [2021-10-20 05:37:56,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:37:56,595 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:37:56,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56 WrapperNode [2021-10-20 05:37:56,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:37:56,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:37:56,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:37:56,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:37:56,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:37:56,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:37:56,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:37:56,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:37:56,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:37:56,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:37:56,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:37:56,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:37:56,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (1/1) ... [2021-10-20 05:37:56,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:37:56,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:37:56,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:37:56,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:37:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:37:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:37:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-20 05:37:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:37:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-20 05:37:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:37:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:37:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:37:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-20 05:37:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:37:57,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:37:57,387 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-20 05:37:57,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:37:57 BoogieIcfgContainer [2021-10-20 05:37:57,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:37:57,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:37:57,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:37:57,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:37:57,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:37:56" (1/3) ... [2021-10-20 05:37:57,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce1d69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:37:57, skipping insertion in model container [2021-10-20 05:37:57,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:37:56" (2/3) ... [2021-10-20 05:37:57,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce1d69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:37:57, skipping insertion in model container [2021-10-20 05:37:57,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:37:57" (3/3) ... [2021-10-20 05:37:57,405 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610.c [2021-10-20 05:37:57,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:37:57,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:37:57,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:37:57,467 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:37:57,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:37:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:37:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:37:57,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:37:57,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:37:57,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:37:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:37:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1259120973, now seen corresponding path program 1 times [2021-10-20 05:37:57,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:37:57,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066100399] [2021-10-20 05:37:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:37:57,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:37:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:37:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:37:57,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:37:57,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066100399] [2021-10-20 05:37:57,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066100399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:37:57,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:37:57,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:37:57,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74335569] [2021-10-20 05:37:57,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:37:57,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:37:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:37:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:37:57,691 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:37:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:37:57,705 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2021-10-20 05:37:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:37:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:37:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:37:57,715 INFO L225 Difference]: With dead ends: 41 [2021-10-20 05:37:57,715 INFO L226 Difference]: Without dead ends: 19 [2021-10-20 05:37:57,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:37:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-20 05:37:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-20 05:37:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:37:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-10-20 05:37:57,747 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2021-10-20 05:37:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:37:57,748 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-10-20 05:37:57,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:37:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-10-20 05:37:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:37:57,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:37:57,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:37:57,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:37:57,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:37:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:37:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1789393112, now seen corresponding path program 1 times [2021-10-20 05:37:57,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:37:57,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415996572] [2021-10-20 05:37:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:37:57,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:37:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:37:57,833 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:37:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:37:57,936 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:37:57,936 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:37:57,939 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:37:57,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:37:57,946 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:37:57,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:37:57 BoogieIcfgContainer [2021-10-20 05:37:57,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:37:57,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:37:57,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:37:57,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:37:57,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:37:57" (3/4) ... [2021-10-20 05:37:57,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:37:57,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:37:57,981 INFO L168 Benchmark]: Toolchain (without parser) took 1727.71 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 45.0 MB in the end (delta: 31.7 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,982 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 77.6 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 35.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:37:57,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.78 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 73.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.28 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 70.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,984 INFO L168 Benchmark]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,985 INFO L168 Benchmark]: RCFGBuilder took 688.49 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 75.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,986 INFO L168 Benchmark]: TraceAbstraction took 582.55 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 45.5 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:37:57,986 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 98.6 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:37:57,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 77.6 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 35.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.78 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 73.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.28 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 70.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.03 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 688.49 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 75.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 582.55 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 45.5 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 98.6 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 134]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L129] float x = 0.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L68] COND TRUE ix >= 0x50800000 [L69] COND FALSE !(((ix) > 0x7f800000L)) [L71] COND FALSE !(hx > 0) [L74] EXPR atanhi_atan[3] [L74] EXPR atanlo_atan[3] [L74] return -atanhi_atan[3] - atanlo_atan[3]; [L130] float res = atan_float(x); [L17] return x != x; [L133] COND TRUE !isnan_float(res) [L134] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 486.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.6ms, AutomataDifference: 41.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 109.8ms SatisfiabilityAnalysisTime, 56.3ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-20 05:37:58,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:38:00,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:38:00,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:38:00,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:38:00,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:38:00,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:38:00,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:38:00,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:38:00,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:38:00,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:38:00,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:38:00,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:38:00,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:38:00,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:38:00,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:38:00,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:38:00,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:38:00,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:38:00,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:38:00,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:38:00,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:38:00,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:38:00,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:38:00,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:38:00,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:38:00,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:38:00,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:38:00,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:38:00,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:38:00,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:38:00,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:38:00,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:38:00,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:38:00,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:38:00,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:38:00,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:38:00,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:38:00,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:38:00,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:38:00,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:38:00,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:38:00,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:38:00,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:38:00,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:38:00,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:38:00,534 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:38:00,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:38:00,535 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:38:00,535 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:38:00,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:38:00,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:38:00,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:38:00,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:38:00,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:38:00,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:38:00,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:38:00,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:38:00,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:38:00,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:38:00,540 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:38:00,540 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:38:00,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:38:00,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:38:00,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:38:00,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:38:00,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:38:00,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:38:00,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:38:00,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:38:00,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:38:00,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:38:00,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:38:00,543 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:38:00,543 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:38:00,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:38:00,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:38:00,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:38:00,544 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_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25249e4a5dfcdfed2078f190bfb36f4672db41bdb03e03d1de22de138ec215e0 [2021-10-20 05:38:00,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:38:00,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:38:00,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:38:00,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:38:00,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:38:00,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2021-10-20 05:38:01,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/2999d304f/98483ba9c5ad4df7afae6bfd43c9ce6e/FLAGe2efd2e6d [2021-10-20 05:38:01,558 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:38:01,559 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c [2021-10-20 05:38:01,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/2999d304f/98483ba9c5ad4df7afae6bfd43c9ce6e/FLAGe2efd2e6d [2021-10-20 05:38:01,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/data/2999d304f/98483ba9c5ad4df7afae6bfd43c9ce6e [2021-10-20 05:38:01,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:38:01,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:38:01,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:38:01,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:38:01,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:38:01,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:38:01" (1/1) ... [2021-10-20 05:38:01,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd9ca57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:01, skipping insertion in model container [2021-10-20 05:38:01,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:38:01" (1/1) ... [2021-10-20 05:38:01,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:38:01,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:38:02,199 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c[3190,3203] [2021-10-20 05:38:02,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:38:02,217 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:38:02,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/sv-benchmarks/c/float-newlib/float_req_bl_0610.c[3190,3203] [2021-10-20 05:38:02,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:38:02,282 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:38:02,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02 WrapperNode [2021-10-20 05:38:02,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:38:02,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:38:02,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:38:02,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:38:02,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:38:02,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:38:02,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:38:02,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:38:02,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:38:02,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:38:02,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:38:02,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:38:02,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (1/1) ... [2021-10-20 05:38:02,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:38:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:38:02,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:38:02,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:38:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-20 05:38:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:38:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:38:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-20 05:38:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 05:38:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:38:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:38:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-20 05:38:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 05:38:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:38:14,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:38:14,780 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-20 05:38:14,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:38:14 BoogieIcfgContainer [2021-10-20 05:38:14,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:38:14,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:38:14,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:38:14,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:38:14,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:38:01" (1/3) ... [2021-10-20 05:38:14,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e0b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:38:14, skipping insertion in model container [2021-10-20 05:38:14,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:38:02" (2/3) ... [2021-10-20 05:38:14,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e0b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:38:14, skipping insertion in model container [2021-10-20 05:38:14,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:38:14" (3/3) ... [2021-10-20 05:38:14,790 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610.c [2021-10-20 05:38:14,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:38:14,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:38:14,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:38:14,852 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:38:14,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:38:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:38:14,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:38:14,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:38:14,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:38:14,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:38:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1030411275, now seen corresponding path program 1 times [2021-10-20 05:38:14,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:38:14,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545527613] [2021-10-20 05:38:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:38:14,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:38:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:38:14,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:38:14,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:38:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:38:15,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:38:15,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:38:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:16,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:38:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:16,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:38:16,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545527613] [2021-10-20 05:38:16,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545527613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:38:16,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:38:16,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:38:16,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070645119] [2021-10-20 05:38:16,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:38:16,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:38:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:38:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:38:16,173 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:38:16,201 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2021-10-20 05:38:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:38:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 05:38:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:38:16,216 INFO L225 Difference]: With dead ends: 64 [2021-10-20 05:38:16,216 INFO L226 Difference]: Without dead ends: 30 [2021-10-20 05:38:16,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:38:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-20 05:38:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-20 05:38:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-10-20 05:38:16,263 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 10 [2021-10-20 05:38:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:38:16,263 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-10-20 05:38:16,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-10-20 05:38:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:38:16,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:38:16,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:38:16,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-20 05:38:16,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:38:16,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:38:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:38:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1304895922, now seen corresponding path program 1 times [2021-10-20 05:38:16,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:38:16,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656675216] [2021-10-20 05:38:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:38:16,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:38:16,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:38:16,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:38:16,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:38:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:38:17,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 05:38:17,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:38:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:18,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:38:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:19,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:38:19,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656675216] [2021-10-20 05:38:19,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656675216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:38:19,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:38:19,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-20 05:38:19,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052632351] [2021-10-20 05:38:19,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:38:19,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:38:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:38:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:38:19,529 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:38:36,350 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-10-20 05:38:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:38:36,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-20 05:38:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:38:36,399 INFO L225 Difference]: With dead ends: 45 [2021-10-20 05:38:36,399 INFO L226 Difference]: Without dead ends: 37 [2021-10-20 05:38:36,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1394.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:38:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-20 05:38:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-20 05:38:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-10-20 05:38:36,406 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2021-10-20 05:38:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:38:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-10-20 05:38:36,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-10-20 05:38:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 05:38:36,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:38:36,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:38:36,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-20 05:38:36,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:38:36,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:38:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:38:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1812830160, now seen corresponding path program 1 times [2021-10-20 05:38:36,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:38:36,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023286517] [2021-10-20 05:38:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:38:36,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:38:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:38:36,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:38:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:38:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:38:37,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 05:38:37,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:38:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:38,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:38:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:38:38,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:38:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023286517] [2021-10-20 05:38:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023286517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:38:38,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:38:38,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-10-20 05:38:38,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684223285] [2021-10-20 05:38:38,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 05:38:38,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:38:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 05:38:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:38:38,978 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:38:39,353 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-20 05:38:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:38:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-20 05:38:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:38:39,355 INFO L225 Difference]: With dead ends: 30 [2021-10-20 05:38:39,355 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:38:39,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 982.9ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-20 05:38:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:38:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:38:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:38:39,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-20 05:38:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:38:39,357 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:38:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:38:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:38:39,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:38:39,361 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:38:39,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:38:39,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:38:39,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:38:39,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:38:39,873 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-20 05:38:39,873 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 76 101) no Hoare annotation was computed. [2021-10-20 05:38:39,874 INFO L857 garLoopResultBuilder]: For program point L118(line 118) no Hoare annotation was computed. [2021-10-20 05:38:39,874 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2021-10-20 05:38:39,874 INFO L857 garLoopResultBuilder]: For program point L118-2(line 118) no Hoare annotation was computed. [2021-10-20 05:38:39,875 INFO L853 garLoopResultBuilder]: At program point L118-3(lines 58 120) the Hoare annotation is: (and (= |ULTIMATE.start_atan_float_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start_atan_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-20 05:38:39,875 INFO L857 garLoopResultBuilder]: For program point L77(lines 77 80) no Hoare annotation was computed. [2021-10-20 05:38:39,875 INFO L857 garLoopResultBuilder]: For program point L77-2(lines 77 80) no Hoare annotation was computed. [2021-10-20 05:38:39,875 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 70) no Hoare annotation was computed. [2021-10-20 05:38:39,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:38:39,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-20 05:38:39,876 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 79) no Hoare annotation was computed. [2021-10-20 05:38:39,876 INFO L857 garLoopResultBuilder]: For program point L62-1(lines 62 66) no Hoare annotation was computed. [2021-10-20 05:38:39,877 INFO L853 garLoopResultBuilder]: At program point L62-2(lines 62 66) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-20 05:38:39,877 INFO L857 garLoopResultBuilder]: For program point L62-3(lines 62 66) no Hoare annotation was computed. [2021-10-20 05:38:39,877 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2021-10-20 05:38:39,877 INFO L853 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: false [2021-10-20 05:38:39,878 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 74) no Hoare annotation was computed. [2021-10-20 05:38:39,878 INFO L860 garLoopResultBuilder]: At program point L138(lines 122 139) the Hoare annotation is: true [2021-10-20 05:38:39,878 INFO L853 garLoopResultBuilder]: At program point L31(lines 19 32) the Hoare annotation is: false [2021-10-20 05:38:39,878 INFO L857 garLoopResultBuilder]: For program point L114(lines 114 119) no Hoare annotation was computed. [2021-10-20 05:38:39,878 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-20 05:38:39,879 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 134) no Hoare annotation was computed. [2021-10-20 05:38:39,879 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:38:39,879 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (= |ULTIMATE.start_atan_float_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start_atan_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-20 05:38:39,879 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 136) no Hoare annotation was computed. [2021-10-20 05:38:39,879 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 30) no Hoare annotation was computed. [2021-10-20 05:38:39,879 INFO L857 garLoopResultBuilder]: For program point L26-1(lines 19 32) no Hoare annotation was computed. [2021-10-20 05:38:39,880 INFO L857 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2021-10-20 05:38:39,880 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 100) no Hoare annotation was computed. [2021-10-20 05:38:39,880 INFO L857 garLoopResultBuilder]: For program point L76(lines 76 101) no Hoare annotation was computed. [2021-10-20 05:38:39,880 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-20 05:38:39,880 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 75) no Hoare annotation was computed. [2021-10-20 05:38:39,884 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:38:39,893 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,894 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,894 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,894 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,899 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,899 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,900 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,900 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,901 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,902 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,902 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,902 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,903 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,903 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,903 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,904 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,904 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,905 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:39,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:38:39 BoogieIcfgContainer [2021-10-20 05:38:39,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:38:39,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:38:39,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:38:39,907 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:38:39,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:38:14" (3/4) ... [2021-10-20 05:38:39,911 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:38:39,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-20 05:38:39,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-20 05:38:39,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:38:39,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:38:39,957 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-20 05:38:39,958 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result [2021-10-20 05:38:40,002 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:38:40,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:38:40,004 INFO L168 Benchmark]: Toolchain (without parser) took 38073.24 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 45.0 MB in the beginning and 46.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,004 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:38:40,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.49 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 44.6 MB in the end (delta: 198.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.34 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 42.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,006 INFO L168 Benchmark]: Boogie Preprocessor took 55.69 ms. Allocated memory is still 65.0 MB. Free memory was 42.1 MB in the beginning and 40.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,007 INFO L168 Benchmark]: RCFGBuilder took 12370.45 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 40.0 MB in the beginning and 62.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,007 INFO L168 Benchmark]: TraceAbstraction took 25121.94 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 51.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,008 INFO L168 Benchmark]: Witness Printer took 95.81 ms. Allocated memory is still 90.2 MB. Free memory was 51.7 MB in the beginning and 46.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:38:40,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.49 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 44.6 MB in the end (delta: 198.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.34 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 42.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.69 ms. Allocated memory is still 65.0 MB. Free memory was 42.1 MB in the beginning and 40.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12370.45 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 40.0 MB in the beginning and 62.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25121.94 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 51.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 95.81 ms. Allocated memory is still 90.2 MB. Free memory was 51.7 MB in the beginning and 46.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 134]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25040.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 18.8ms, AutomataDifference: 17326.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 296.4ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 86 SDslu, 121 SDs, 0 SdLazy, 66 SolverSat, 3 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 16229.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2377.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 60 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 35.8ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 254.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 56.3ms SsaConstructionTime, 2600.6ms SatisfiabilityAnalysisTime, 3800.7ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 6 QuantifiedInterpolants, 330 SizeOfPredicates, 17 NumberOfNonLiveVariables, 296 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant [2021-10-20 05:38:40,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,023 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result - InvariantResult [Line: 58]: Loop Invariant [2021-10-20 05:38:40,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,024 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 62]: Loop Invariant [2021-10-20 05:38:40,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-20 05:38:40,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-20 05:38:40,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fa17c3-9ab3-4a6f-8d88-2fb7025bcefb/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...