./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c ....................................................................................................................................................................................................................................................................................................... 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_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:26:43,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:43,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:43,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:43,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:43,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:43,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:43,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:43,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:43,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:43,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:43,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:43,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:43,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:43,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:43,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:43,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:43,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:43,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:43,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:43,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:43,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:43,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:43,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:43,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:43,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:43,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:43,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:43,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:43,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:43,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:43,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:43,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:43,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:43,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:43,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:43,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:43,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:43,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:43,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:43,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:43,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:43,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:43,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:43,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:43,888 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:43,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:43,888 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:43,888 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:43,888 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:43,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:43,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:43,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:43,889 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:43,889 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:43,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:43,890 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:43,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:43,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:43,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:43,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:43,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:43,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:43,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:43,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:43,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:43,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:43,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:43,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:43,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:43,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:43,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:43,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:43,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:43,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:43,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:43,894 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:43,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:43,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:43,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:43,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:43,895 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_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2021-10-11 02:26:44,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:44,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:44,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:44,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:44,205 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:44,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-11 02:26:44,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/11b3267e6/d98cd64142604dadb40b145b304fe8b6/FLAG69ed99cbd [2021-10-11 02:26:44,728 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:44,729 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-11 02:26:44,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/11b3267e6/d98cd64142604dadb40b145b304fe8b6/FLAG69ed99cbd [2021-10-11 02:26:45,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/11b3267e6/d98cd64142604dadb40b145b304fe8b6 [2021-10-11 02:26:45,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:45,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:45,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:45,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:45,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:45,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cd761b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45, skipping insertion in model container [2021-10-11 02:26:45,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:45,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:45,402 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-11 02:26:45,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:45,425 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:45,472 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-11 02:26:45,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:45,489 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:45,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45 WrapperNode [2021-10-11 02:26:45,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:45,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:45,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:45,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:45,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:45,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:45,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:45,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:45,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... [2021-10-11 02:26:45,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:45,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:45,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:45,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:45,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:26:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:26:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:26:46,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:46,298 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:26:46,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:46 BoogieIcfgContainer [2021-10-11 02:26:46,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:46,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:46,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:46,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:46,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:45" (1/3) ... [2021-10-11 02:26:46,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef7e5ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:46, skipping insertion in model container [2021-10-11 02:26:46,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:45" (2/3) ... [2021-10-11 02:26:46,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef7e5ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:46, skipping insertion in model container [2021-10-11 02:26:46,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:46" (3/3) ... [2021-10-11 02:26:46,317 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-11 02:26:46,330 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:46,333 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:46,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:46,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:46,366 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:46,366 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:46,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:46,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:46,367 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:46,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:46,367 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:26:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:26:46,383 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:46,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:46,384 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2021-10-11 02:26:46,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:46,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657889868] [2021-10-11 02:26:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:46,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657889868] [2021-10-11 02:26:46,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:46,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:46,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987427322] [2021-10-11 02:26:46,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:46,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:46,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:46,562 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-10-11 02:26:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:46,600 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-11 02:26:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:46,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:26:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:46,622 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:26:46,623 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:26:46,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:26:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:26:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:26:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:26:46,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-11 02:26:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:46,661 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:26:46,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:26:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:46,662 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:46,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:46,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:46,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:46,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:46,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2021-10-11 02:26:46,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:46,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347178342] [2021-10-11 02:26:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:46,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:46,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:46,822 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:26:46,826 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:26:46,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:46,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:46 BoogieIcfgContainer [2021-10-11 02:26:46,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:46,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:46,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:46,862 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:46,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:46" (3/4) ... [2021-10-11 02:26:46,866 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:26:46,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:46,868 INFO L168 Benchmark]: Toolchain (without parser) took 1743.12 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 78.5 MB in the beginning and 116.5 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,869 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 94.7 MB in the end (delta: 68.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.77 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 92.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:46,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.00 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,871 INFO L168 Benchmark]: Boogie Preprocessor took 54.69 ms. Allocated memory is still 119.5 MB. Free memory was 90.9 MB in the beginning and 89.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,872 INFO L168 Benchmark]: RCFGBuilder took 701.02 ms. Allocated memory is still 119.5 MB. Free memory was 89.3 MB in the beginning and 53.4 MB in the end (delta: 36.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:46,873 INFO L168 Benchmark]: TraceAbstraction took 559.28 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 116.5 MB in the end (delta: -63.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,873 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 151.0 MB. Free memory is still 116.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:46,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 94.7 MB in the end (delta: 68.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.77 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 92.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.00 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.69 ms. Allocated memory is still 119.5 MB. Free memory was 90.9 MB in the beginning and 89.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 701.02 ms. Allocated memory is still 119.5 MB. Free memory was 89.3 MB in the beginning and 53.4 MB in the end (delta: 36.0 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 559.28 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 116.5 MB in the end (delta: -63.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.03 ms. Allocated memory is still 151.0 MB. Free memory is still 116.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: 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 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:26:49,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:49,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:49,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:49,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:49,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:49,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:49,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:49,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:49,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:49,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:49,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:49,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:49,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:49,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:49,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:49,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:49,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:49,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:49,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:49,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:49,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:49,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:49,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:49,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:49,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:49,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:49,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:49,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:49,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:49,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:49,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:49,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:49,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:49,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:49,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:49,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:49,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:49,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:49,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:49,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:49,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:26:49,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:49,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:49,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:49,684 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:49,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:49,684 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:49,685 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:49,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:49,685 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:49,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:49,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:49,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:49,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:26:49,687 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:26:49,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:49,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:49,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:49,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:49,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:49,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:26:49,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:49,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:49,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:49,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:49,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:49,691 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_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2021-10-11 02:26:50,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:50,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:50,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:50,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:50,145 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:50,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-11 02:26:50,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/9dda875cd/f4f0a5d3f8224bf5ab9fcfdcd8c85e0c/FLAGd788bb0ee [2021-10-11 02:26:50,771 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:50,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-11 02:26:50,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/9dda875cd/f4f0a5d3f8224bf5ab9fcfdcd8c85e0c/FLAGd788bb0ee [2021-10-11 02:26:51,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/data/9dda875cd/f4f0a5d3f8224bf5ab9fcfdcd8c85e0c [2021-10-11 02:26:51,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:51,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:51,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:51,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:51,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:51,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a4587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51, skipping insertion in model container [2021-10-11 02:26:51,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:51,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:51,337 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-11 02:26:51,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:51,355 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:51,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-11 02:26:51,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:51,431 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:51,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51 WrapperNode [2021-10-11 02:26:51,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:51,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:51,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:51,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:51,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:51,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:51,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:51,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:51,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:51,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:51,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:51,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:51,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:26:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:26:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:26:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:26:52,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:52,251 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:26:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:52 BoogieIcfgContainer [2021-10-11 02:26:52,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:52,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:52,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:52,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:51" (1/3) ... [2021-10-11 02:26:52,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e573c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:52, skipping insertion in model container [2021-10-11 02:26:52,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51" (2/3) ... [2021-10-11 02:26:52,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e573c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:52, skipping insertion in model container [2021-10-11 02:26:52,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:52" (3/3) ... [2021-10-11 02:26:52,276 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-11 02:26:52,292 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:52,296 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:52,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:52,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:52,350 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:52,350 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:52,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:52,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:52,351 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:52,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:52,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-10-11 02:26:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:52,372 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:52,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:52,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:52,380 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-11 02:26:52,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:52,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950525141] [2021-10-11 02:26:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:52,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:26:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:52,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:52,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950525141] [2021-10-11 02:26:52,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:52,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:52,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007923587] [2021-10-11 02:26:52,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:52,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:52,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:52,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:52,656 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-10-11 02:26:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:52,685 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-11 02:26:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:52,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:26:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:52,705 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:26:52,705 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:26:52,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:26:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:26:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:26:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-11 02:26:52,748 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-11 02:26:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:52,749 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-11 02:26:52,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-11 02:26:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:52,750 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:52,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:52,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:26:52,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-11 02:26:52,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:52,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518969860] [2021-10-11 02:26:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:53,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:53,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:53,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518969860] [2021-10-11 02:26:53,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:53,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:53,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666777115] [2021-10-11 02:26:53,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:53,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:53,205 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2021-10-11 02:26:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:53,292 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-10-11 02:26:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:53,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:26:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:53,297 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:26:53,297 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 02:26:53,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 02:26:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-11 02:26:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:26:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-11 02:26:53,313 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-11 02:26:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:53,315 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-11 02:26:53,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-11 02:26:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:53,320 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:53,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:53,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:26:53,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-10-11 02:26:53,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:53,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493871089] [2021-10-11 02:26:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:26:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:53,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:53,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493871089] [2021-10-11 02:26:53,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:53,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:53,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371309213] [2021-10-11 02:26:53,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:53,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:53,658 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-10-11 02:26:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:53,712 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2021-10-11 02:26:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:53,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:26:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:53,713 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:26:53,713 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:26:53,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:26:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:26:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:26:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-11 02:26:53,719 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2021-10-11 02:26:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:53,719 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-11 02:26:53,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-11 02:26:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:53,720 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:53,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:53,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:26:53,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-11 02:26:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64785546] [2021-10-11 02:26:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:54,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:54,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:54,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64785546] [2021-10-11 02:26:54,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:54,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:54,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892661772] [2021-10-11 02:26:54,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:54,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:54,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:54,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:54,068 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2021-10-11 02:26:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:54,110 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-10-11 02:26:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:54,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:26:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:54,111 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:26:54,112 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:26:54,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:26:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-10-11 02:26:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:26:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-11 02:26:54,118 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-10-11 02:26:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:54,118 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-11 02:26:54,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-11 02:26:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:26:54,119 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:54,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:54,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:26:54,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:54,337 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2021-10-11 02:26:54,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:54,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828921269] [2021-10-11 02:26:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:54,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:26:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:54,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:54,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828921269] [2021-10-11 02:26:54,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:54,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:54,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627249257] [2021-10-11 02:26:54,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:54,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:54,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:54,509 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2021-10-11 02:26:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:54,561 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-11 02:26:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:54,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 02:26:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:54,562 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:26:54,562 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:26:54,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:26:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:26:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:26:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-11 02:26:54,567 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2021-10-11 02:26:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:54,568 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-11 02:26:54,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-11 02:26:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:54,569 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:54,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:54,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:26:54,784 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:54,784 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-11 02:26:54,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:54,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187247059] [2021-10-11 02:26:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:54,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:26:54,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:54,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:54,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187247059] [2021-10-11 02:26:54,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:54,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:54,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253384773] [2021-10-11 02:26:54,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:54,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:54,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:54,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:54,914 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2021-10-11 02:26:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:54,931 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:26:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:54,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-10-11 02:26:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:54,934 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:54,934 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:26:54,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:26:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:26:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:26:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-11 02:26:54,940 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2021-10-11 02:26:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:54,941 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-11 02:26:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-11 02:26:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:54,942 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:54,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:55,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:26:55,159 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-11 02:26:55,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:55,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687710408] [2021-10-11 02:26:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:26:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:55,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:55,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687710408] [2021-10-11 02:26:55,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:55,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:55,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639742169] [2021-10-11 02:26:55,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:55,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:55,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:55,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:55,290 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2021-10-11 02:26:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:55,361 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-11 02:26:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:55,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-10-11 02:26:55,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:55,362 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:26:55,362 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:26:55,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:26:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:26:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:26:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:26:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-11 02:26:55,367 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2021-10-11 02:26:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:55,368 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-11 02:26:55,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-11 02:26:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:26:55,369 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:55,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:55,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:26:55,589 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-11 02:26:55,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:55,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526200079] [2021-10-11 02:26:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:26:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:55,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:26:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:55,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:26:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:55,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:55,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526200079] [2021-10-11 02:26:55,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:55,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:26:55,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395922679] [2021-10-11 02:26:55,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:26:55,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:26:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:26:55,833 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2021-10-11 02:26:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:56,051 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:26:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:26:56,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2021-10-11 02:26:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:56,052 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:26:56,053 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:56,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:26:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:56,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-11 02:26:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:56,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:56,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:26:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:56,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:56,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:26:56,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-11 02:26:56,467 INFO L262 CegarLoopResult]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2021-10-11 02:26:56,468 INFO L258 CegarLoopResult]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) |ULTIMATE.start_main_#t~short14|)) [2021-10-11 02:26:56,468 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-11 02:26:56,468 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-11 02:26:56,468 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-11 02:26:56,468 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L258 CegarLoopResult]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) |ULTIMATE.start_main_#t~short14|)) [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-11 02:26:56,469 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-11 02:26:56,470 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:26:56,470 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2021-10-11 02:26:56,477 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-11 02:26:56,477 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:26:56,478 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2021-10-11 02:26:56,478 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-11 02:26:56,478 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2021-10-11 02:26:56,478 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2021-10-11 02:26:56,478 INFO L265 CegarLoopResult]: At program point L76(lines 58 77) the Hoare annotation is: true [2021-10-11 02:26:56,478 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-11 02:26:56,479 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-11 02:26:56,479 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2021-10-11 02:26:56,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:56 BoogieIcfgContainer [2021-10-11 02:26:56,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:56,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:56,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:56,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:56,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:52" (3/4) ... [2021-10-11 02:26:56,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:56,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-11 02:26:56,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:26:56,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:26:56,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:56,573 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x [2021-10-11 02:26:56,574 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2021-10-11 02:26:56,576 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2021-10-11 02:26:56,576 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result [2021-10-11 02:26:56,577 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~Pluszero~LONGDOUBLE() && ~bvadd64(\result, 4294967295bv32) == 0bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2021-10-11 02:26:56,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fa6d81-40e3-432f-8d01-3dd2a4ba2478/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:56,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:56,622 INFO L168 Benchmark]: Toolchain (without parser) took 5497.38 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 40.6 MB in the beginning and 43.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:56,622 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:56,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 43.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:56,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.92 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:56,623 INFO L168 Benchmark]: Boogie Preprocessor took 67.73 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 39.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:56,624 INFO L168 Benchmark]: RCFGBuilder took 679.58 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 39.8 MB in the beginning and 62.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:56,624 INFO L168 Benchmark]: TraceAbstraction took 4260.90 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 46.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:56,625 INFO L168 Benchmark]: Witness Printer took 104.35 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 43.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:56,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 43.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.92 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.73 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 39.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 679.58 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 39.8 MB in the beginning and 62.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4260.90 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 46.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 104.35 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 43.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((x == ~Pluszero~LONGDOUBLE() && ~bvadd64(\result, 4294967295bv32) == 0bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 141 SDslu, 293 SDs, 0 SdLazy, 124 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 183 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 6105 SizeOfPredicates, 38 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 proved your program to be correct! Received shutdown request...