./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-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:21:37,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:21:37,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:21:37,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:21:37,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:21:37,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:21:37,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:21:37,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:21:37,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:21:37,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:21:37,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:21:37,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:21:37,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:21:37,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:21:37,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:21:37,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:21:37,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:21:37,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:21:37,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:21:37,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:21:37,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:21:37,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:21:37,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:21:37,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:21:37,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:21:37,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:21:37,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:21:37,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:21:37,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:21:37,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:21:37,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:21:37,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:21:37,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:21:37,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:21:37,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:21:37,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:21:37,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:21:37,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:21:37,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:21:37,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:21:37,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:21:37,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:21:37,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:21:37,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:21:37,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:21:37,855 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:21:37,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:21:37,856 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:21:37,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:21:37,856 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:21:37,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:21:37,856 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:21:37,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:21:37,857 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:21:37,857 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:21:37,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:21:37,857 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:21:37,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:21:37,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:21:37,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:21:37,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:21:37,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:21:37,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:21:37,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:21:37,860 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:21:37,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:21:37,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:21:37,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:21:37,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:21:37,861 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-12-09 14:21:38,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:21:38,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:21:38,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:21:38,065 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:21:38,066 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:21:38,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-09 14:21:38,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/2830bacad/80e514cb9b0145eabc61bb2bdae48459/FLAG57c28e9e7 [2020-12-09 14:21:38,460 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:21:38,460 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-09 14:21:38,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/2830bacad/80e514cb9b0145eabc61bb2bdae48459/FLAG57c28e9e7 [2020-12-09 14:21:38,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/2830bacad/80e514cb9b0145eabc61bb2bdae48459 [2020-12-09 14:21:38,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:21:38,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:21:38,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:21:38,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:21:38,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:21:38,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:38" (1/1) ... [2020-12-09 14:21:38,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d404dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:38, skipping insertion in model container [2020-12-09 14:21:38,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:38" (1/1) ... [2020-12-09 14:21:38,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:21:38,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:21:39,029 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-09 14:21:39,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:21:39,040 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:21:39,056 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-09 14:21:39,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:21:39,068 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:21:39,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39 WrapperNode [2020-12-09 14:21:39,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:21:39,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:21:39,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:21:39,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:21:39,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:21:39,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:21:39,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:21:39,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:21:39,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... [2020-12-09 14:21:39,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:21:39,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:21:39,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:21:39,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:21:39,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:21:39,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 14:21:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:21:39,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:21:39,583 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 14:21:39,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:39 BoogieIcfgContainer [2020-12-09 14:21:39,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:21:39,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:21:39,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:21:39,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:21:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:21:38" (1/3) ... [2020-12-09 14:21:39,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c92a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:21:39, skipping insertion in model container [2020-12-09 14:21:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:39" (2/3) ... [2020-12-09 14:21:39,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c92a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:21:39, skipping insertion in model container [2020-12-09 14:21:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:39" (3/3) ... [2020-12-09 14:21:39,593 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-12-09 14:21:39,602 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:21:39,605 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:21:39,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:21:39,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:21:39,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:21:39,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:21:39,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:21:39,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:21:39,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:21:39,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:21:39,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:21:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 14:21:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:21:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:39,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:39,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2020-12-09 14:21:39,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:21:39,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116345084] [2020-12-09 14:21:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:21:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:39,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116345084] [2020-12-09 14:21:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:39,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:21:39,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133292845] [2020-12-09 14:21:39,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 14:21:39,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:21:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 14:21:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:21:39,773 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-09 14:21:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:39,783 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-09 14:21:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 14:21:39,784 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 14:21:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:39,792 INFO L225 Difference]: With dead ends: 35 [2020-12-09 14:21:39,792 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 14:21:39,795 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 [2020-12-09 14:21:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 14:21:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 14:21:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 14:21:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 14:21:39,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-12-09 14:21:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:39,823 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 14:21:39,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 14:21:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 14:21:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:21:39,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:39,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:39,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:21:39,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2020-12-09 14:21:39,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:21:39,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443059993] [2020-12-09 14:21:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:21:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:21:39,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:21:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:21:39,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:21:39,914 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 14:21:39,914 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:21:39,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:21:39,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:21:39 BoogieIcfgContainer [2020-12-09 14:21:39,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:21:39,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:21:39,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:21:39,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:21:39,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:39" (3/4) ... [2020-12-09 14:21:39,935 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 14:21:39,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:21:39,937 INFO L168 Benchmark]: Toolchain (without parser) took 1045.48 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 42.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,938 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:21:39,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.76 ms. Allocated memory is still 102.8 MB. Free memory was 79.3 MB in the beginning and 74.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.06 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 73.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,940 INFO L168 Benchmark]: Boogie Preprocessor took 19.81 ms. Allocated memory is still 102.8 MB. Free memory was 73.0 MB in the beginning and 71.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,941 INFO L168 Benchmark]: RCFGBuilder took 468.94 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 65.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,941 INFO L168 Benchmark]: TraceAbstraction took 344.15 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 42.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:39,942 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 102.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:21:39,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.76 ms. Allocated memory is still 102.8 MB. Free memory was 79.3 MB in the beginning and 74.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.06 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 73.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.81 ms. Allocated memory is still 102.8 MB. Free memory was 73.0 MB in the beginning and 71.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 468.94 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 65.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 344.15 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 42.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.69 ms. Allocated memory is still 102.8 MB. Free memory is still 42.7 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: 0.2s, 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 [2020-12-09 14:21:41,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:21:41,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:21:41,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:21:41,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:21:41,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:21:41,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:21:41,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:21:41,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:21:41,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:21:41,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:21:41,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:21:41,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:21:41,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:21:41,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:21:41,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:21:41,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:21:41,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:21:41,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:21:41,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:21:41,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:21:41,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:21:41,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:21:41,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:21:41,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:21:41,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:21:41,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:21:41,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:21:41,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:21:41,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:21:41,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:21:41,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:21:41,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:21:41,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:21:41,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:21:41,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:21:41,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:21:41,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:21:41,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:21:41,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:21:41,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:21:41,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 14:21:41,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:21:41,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:21:41,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:21:41,720 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:21:41,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:21:41,721 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:21:41,721 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:21:41,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:21:41,721 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:21:41,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:21:41,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:21:41,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:21:41,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:21:41,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:21:41,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:21:41,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:21:41,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:21:41,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:21:41,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:21:41,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:21:41,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:21:41,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:21:41,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:21:41,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:21:41,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:21:41,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:21:41,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:21:41,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:21:41,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:21:41,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:21:41,726 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:21:41,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:21:41,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:21:41,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:21:41,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:21:41,727 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-12-09 14:21:41,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:21:41,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:21:41,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:21:41,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:21:41,980 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:21:41,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-09 14:21:42,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/ff498f617/20ff3d90256b4b9bbfaacb0918826c68/FLAGee96c2a85 [2020-12-09 14:21:42,408 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:21:42,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-12-09 14:21:42,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/ff498f617/20ff3d90256b4b9bbfaacb0918826c68/FLAGee96c2a85 [2020-12-09 14:21:42,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/data/ff498f617/20ff3d90256b4b9bbfaacb0918826c68 [2020-12-09 14:21:42,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:21:42,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:21:42,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:21:42,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:21:42,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:21:42,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73329b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42, skipping insertion in model container [2020-12-09 14:21:42,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:21:42,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:21:42,564 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-09 14:21:42,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:21:42,575 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:21:42,592 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2020-12-09 14:21:42,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:21:42,616 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:21:42,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42 WrapperNode [2020-12-09 14:21:42,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:21:42,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:21:42,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:21:42,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:21:42,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:21:42,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:21:42,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:21:42,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:21:42,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... [2020-12-09 14:21:42,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:21:42,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:21:42,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:21:42,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:21:42,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:21:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 14:21:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:21:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 14:21:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:21:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:21:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 14:21:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:21:43,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:21:43,020 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 14:21:43,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:43 BoogieIcfgContainer [2020-12-09 14:21:43,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:21:43,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:21:43,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:21:43,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:21:43,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:21:42" (1/3) ... [2020-12-09 14:21:43,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2e53ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:21:43, skipping insertion in model container [2020-12-09 14:21:43,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:42" (2/3) ... [2020-12-09 14:21:43,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2e53ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:21:43, skipping insertion in model container [2020-12-09 14:21:43,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:43" (3/3) ... [2020-12-09 14:21:43,028 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-12-09 14:21:43,041 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:21:43,044 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:21:43,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:21:43,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:21:43,074 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:21:43,074 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:21:43,074 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:21:43,074 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:21:43,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:21:43,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:21:43,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:21:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 14:21:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:21:43,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:43,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:43,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-09 14:21:43,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:43,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092405077] [2020-12-09 14:21:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 14:21:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:43,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 14:21:43,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:43,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:43,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092405077] [2020-12-09 14:21:43,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:43,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:21:43,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920118848] [2020-12-09 14:21:43,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 14:21:43,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 14:21:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:21:43,216 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 14:21:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:43,233 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-12-09 14:21:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 14:21:43,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 14:21:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:43,242 INFO L225 Difference]: With dead ends: 62 [2020-12-09 14:21:43,242 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 14:21:43,245 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 [2020-12-09 14:21:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 14:21:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 14:21:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 14:21:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-09 14:21:43,279 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-09 14:21:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:43,279 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-09 14:21:43,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 14:21:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-09 14:21:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:21:43,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:43,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:43,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:21:43,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:43,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-09 14:21:43,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:43,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762013052] [2020-12-09 14:21:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 14:21:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:43,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:21:43,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:43,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:43,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762013052] [2020-12-09 14:21:43,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:43,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:21:43,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577699862] [2020-12-09 14:21:43,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:21:43,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:43,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:21:43,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:21:43,683 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-09 14:21:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:43,725 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-09 14:21:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:21:43,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 14:21:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:43,726 INFO L225 Difference]: With dead ends: 53 [2020-12-09 14:21:43,727 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 14:21:43,727 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 [2020-12-09 14:21:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 14:21:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-09 14:21:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 14:21:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-09 14:21:43,732 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-09 14:21:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:43,732 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-09 14:21:43,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:21:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-09 14:21:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 14:21:43,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:43,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:43,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:21:43,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:43,935 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-09 14:21:43,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:43,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619954432] [2020-12-09 14:21:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:44,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:21:44,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:44,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:44,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619954432] [2020-12-09 14:21:44,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:44,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:21:44,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749381117] [2020-12-09 14:21:44,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:21:44,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:21:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:21:44,086 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-09 14:21:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:44,123 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-12-09 14:21:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:21:44,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 14:21:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:44,124 INFO L225 Difference]: With dead ends: 50 [2020-12-09 14:21:44,124 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 14:21:44,124 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 [2020-12-09 14:21:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 14:21:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 14:21:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 14:21:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-12-09 14:21:44,127 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2020-12-09 14:21:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:44,127 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-12-09 14:21:44,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:21:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-12-09 14:21:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 14:21:44,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:44,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:44,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:21:44,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-12-09 14:21:44,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:44,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715394394] [2020-12-09 14:21:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:44,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:21:44,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:44,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:44,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715394394] [2020-12-09 14:21:44,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:44,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:21:44,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113586889] [2020-12-09 14:21:44,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:21:44,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:44,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:21:44,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:21:44,442 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2020-12-09 14:21:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:44,467 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-12-09 14:21:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:21:44,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 14:21:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:44,468 INFO L225 Difference]: With dead ends: 48 [2020-12-09 14:21:44,468 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 14:21:44,468 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 [2020-12-09 14:21:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 14:21:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-12-09 14:21:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 14:21:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-09 14:21:44,471 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-12-09 14:21:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:44,472 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-09 14:21:44,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:21:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-09 14:21:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 14:21:44,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:44,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:44,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 14:21:44,673 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:44,673 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2020-12-09 14:21:44,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:44,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641149195] [2020-12-09 14:21:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:44,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:21:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:44,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:44,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641149195] [2020-12-09 14:21:44,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:44,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:21:44,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130896806] [2020-12-09 14:21:44,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:21:44,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:44,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:21:44,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:21:44,779 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-12-09 14:21:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:44,819 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-12-09 14:21:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:21:44,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-09 14:21:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:44,820 INFO L225 Difference]: With dead ends: 39 [2020-12-09 14:21:44,820 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 14:21:44,821 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 [2020-12-09 14:21:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 14:21:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 14:21:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 14:21:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 14:21:44,824 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-12-09 14:21:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:44,825 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 14:21:44,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:21:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 14:21:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:21:44,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:44,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:45,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 14:21:45,027 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:45,028 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-12-09 14:21:45,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:45,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917605125] [2020-12-09 14:21:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:45,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:21:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:45,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:45,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917605125] [2020-12-09 14:21:45,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:45,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:21:45,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927765160] [2020-12-09 14:21:45,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:21:45,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:21:45,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:21:45,162 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2020-12-09 14:21:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:45,168 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-09 14:21:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:21:45,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 14:21:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:45,169 INFO L225 Difference]: With dead ends: 33 [2020-12-09 14:21:45,169 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 14:21:45,170 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 [2020-12-09 14:21:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 14:21:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 14:21:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 14:21:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-09 14:21:45,173 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-12-09 14:21:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:45,173 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-09 14:21:45,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:21:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-09 14:21:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:21:45,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:45,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:21:45,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 14:21:45,376 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-12-09 14:21:45,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:45,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494193055] [2020-12-09 14:21:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:45,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 14:21:45,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:45,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:45,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494193055] [2020-12-09 14:21:45,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:45,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:21:45,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525228305] [2020-12-09 14:21:45,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:21:45,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:45,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:21:45,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:21:45,546 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-12-09 14:21:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:45,597 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-12-09 14:21:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:21:45,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 14:21:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:45,599 INFO L225 Difference]: With dead ends: 26 [2020-12-09 14:21:45,599 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 14:21:45,599 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 [2020-12-09 14:21:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 14:21:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 14:21:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 14:21:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-12-09 14:21:45,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2020-12-09 14:21:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:45,603 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-12-09 14:21:45,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:21:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-12-09 14:21:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:21:45,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:21:45,604 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] [2020-12-09 14:21:45,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 14:21:45,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:21:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:21:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-12-09 14:21:45,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:21:45,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250932812] [2020-12-09 14:21:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/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 [2020-12-09 14:21:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:21:45,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 14:21:45,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:21:45,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:21:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:21:45,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:21:45,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250932812] [2020-12-09 14:21:45,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:21:45,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 14:21:45,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297852076] [2020-12-09 14:21:45,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:21:45,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:21:45,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:21:45,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:21:45,998 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2020-12-09 14:21:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:21:46,132 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 14:21:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:21:46,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-12-09 14:21:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:21:46,133 INFO L225 Difference]: With dead ends: 23 [2020-12-09 14:21:46,133 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:21:46,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-09 14:21:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:21:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:21:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:21:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:21:46,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 14:21:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:21:46,134 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:21:46,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:21:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:21:46,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:21:46,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 14:21:46,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-12-09 14:21:46,488 INFO L262 CegarLoopResult]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2020-12-09 14:21:46,489 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|)) [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2020-12-09 14:21:46,489 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|)) [2020-12-09 14:21:46,489 INFO L262 CegarLoopResult]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-12-09 14:21:46,490 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)) [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-12-09 14:21:46,490 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))) [2020-12-09 14:21:46,490 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-12-09 14:21:46,490 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)) [2020-12-09 14:21:46,490 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|))) [2020-12-09 14:21:46,491 INFO L265 CegarLoopResult]: At program point L76(lines 58 77) the Hoare annotation is: true [2020-12-09 14:21:46,491 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-12-09 14:21:46,491 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-12-09 14:21:46,491 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))) [2020-12-09 14:21:46,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:21:46 BoogieIcfgContainer [2020-12-09 14:21:46,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:21:46,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:21:46,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:21:46,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:21:46,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:21:43" (3/4) ... [2020-12-09 14:21:46,507 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:21:46,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 14:21:46,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 14:21:46,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:21:46,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:21:46,532 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 [2020-12-09 14:21:46,532 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()) [2020-12-09 14:21:46,533 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 [2020-12-09 14:21:46,533 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 [2020-12-09 14:21:46,533 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 [2020-12-09 14:21:46,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15b57abf-673f-4697-9ca5-98a1b48530d9/bin/utaipan/witness.graphml [2020-12-09 14:21:46,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:21:46,552 INFO L168 Benchmark]: Toolchain (without parser) took 4121.27 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 35.9 MB in the beginning and 41.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,553 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:21:46,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.77 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 61.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.71 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,554 INFO L168 Benchmark]: Boogie Preprocessor took 24.85 ms. Allocated memory is still 77.6 MB. Free memory was 60.0 MB in the beginning and 58.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:21:46,554 INFO L168 Benchmark]: RCFGBuilder took 337.66 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 58.4 MB in the end (delta: -69.3 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,554 INFO L168 Benchmark]: TraceAbstraction took 3481.71 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 58.1 MB in the beginning and 45.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,555 INFO L168 Benchmark]: Witness Printer took 46.26 ms. Allocated memory is still 94.4 MB. Free memory was 45.7 MB in the beginning and 41.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:21:46,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 185.77 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 61.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.71 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.85 ms. Allocated memory is still 77.6 MB. Free memory was 60.0 MB in the beginning and 58.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.66 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 58.4 MB in the end (delta: -69.3 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3481.71 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 58.1 MB in the beginning and 45.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 46.26 ms. Allocated memory is still 94.4 MB. Free memory was 45.7 MB in the beginning and 41.5 MB in the end (delta: 4.2 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, 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, 0.2s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s 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...