./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8 --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 aff65fabc2d382d12545e3467825c9efd3fdd157 ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8 --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 aff65fabc2d382d12545e3467825c9efd3fdd157 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:59:55,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:59:55,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:59:55,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:59:55,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:59:55,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:59:55,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:59:55,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:59:55,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:59:55,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:59:55,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:59:55,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:59:55,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:59:55,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:59:55,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:59:55,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:59:55,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:59:55,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:59:55,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:59:55,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:59:55,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:59:55,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:59:55,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:59:55,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:59:55,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:59:55,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:59:55,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:59:55,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:59:55,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:59:55,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:59:55,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:59:55,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:59:55,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:59:55,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:59:55,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:59:55,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:59:55,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:59:55,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:59:55,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:59:55,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:59:55,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:59:55,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:59:55,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:59:55,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:59:55,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:59:55,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:59:55,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:59:55,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:59:55,812 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:59:55,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:59:55,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:59:55,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:59:55,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:59:55,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:59:55,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:59:55,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:59:55,821 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:59:55,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:59:55,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:59:55,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:59:55,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:59:55,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:59:55,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:59:55,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:59:55,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:59:55,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:59:55,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:59:55,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:59:55,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:59:55,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:59:55,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:59:55,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:59:55,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:59:55,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:59:55,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:59:55,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:59:55,825 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:59:55,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:59:55,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:59:55,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:59:55,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:59:55,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2021-10-13 07:59:56,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:59:56,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:59:56,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:59:56,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:59:56,144 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:59:56,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 07:59:56,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/528dcf954/1cad4296d13f4dc3a55983afb8aa531e/FLAGe5e4c3a8e [2021-10-13 07:59:56,646 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:59:56,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 07:59:56,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/528dcf954/1cad4296d13f4dc3a55983afb8aa531e/FLAGe5e4c3a8e [2021-10-13 07:59:57,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/528dcf954/1cad4296d13f4dc3a55983afb8aa531e [2021-10-13 07:59:57,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:59:57,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:59:57,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:59:57,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:59:57,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:59:57,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3237230f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57, skipping insertion in model container [2021-10-13 07:59:57,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:59:57,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:59:57,276 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 07:59:57,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:59:57,296 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:59:57,308 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 07:59:57,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:59:57,323 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:59:57,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57 WrapperNode [2021-10-13 07:59:57,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:59:57,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:59:57,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:59:57,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:59:57,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:59:57,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:59:57,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:59:57,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:59:57,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:59:57,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:59:57,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:59:57,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:59:57,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (1/1) ... [2021-10-13 07:59:57,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:59:57,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:59:57,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:59:57,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:59:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:59:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:59:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:59:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:59:57,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:59:57,640 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:59:57,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:59:57 BoogieIcfgContainer [2021-10-13 07:59:57,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:59:57,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:59:57,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:59:57,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:59:57,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:59:57" (1/3) ... [2021-10-13 07:59:57,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c425a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:59:57, skipping insertion in model container [2021-10-13 07:59:57,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:59:57" (2/3) ... [2021-10-13 07:59:57,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c425a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:59:57, skipping insertion in model container [2021-10-13 07:59:57,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:59:57" (3/3) ... [2021-10-13 07:59:57,651 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-10-13 07:59:57,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:59:57,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:59:57,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:59:57,726 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:59:57,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:59:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:59:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:59:57,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:59:57,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:59:57,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:59:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:59:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2021-10-13 07:59:57,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:59:57,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417751018] [2021-10-13 07:59:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:59:57,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:59:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:59:57,874 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:59:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:59:57,909 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:59:57,911 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:59:57,913 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:59:57,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:59:57,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:59:57,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:59:57 BoogieIcfgContainer [2021-10-13 07:59:57,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:59:57,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:59:57,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:59:57,938 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:59:57,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:59:57" (3/4) ... [2021-10-13 07:59:57,941 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:59:57,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:59:57,943 INFO L168 Benchmark]: Toolchain (without parser) took 871.66 ms. Allocated memory is still 125.8 MB. Free memory was 90.5 MB in the beginning and 74.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,944 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:59:57,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.27 ms. Allocated memory is still 125.8 MB. Free memory was 90.5 MB in the beginning and 100.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.21 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 99.3 MB in the end (delta: 764.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:59:57,947 INFO L168 Benchmark]: Boogie Preprocessor took 19.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 98.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,947 INFO L168 Benchmark]: RCFGBuilder took 266.69 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 88.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,948 INFO L168 Benchmark]: TraceAbstraction took 292.35 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 75.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,949 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 125.8 MB. Free memory was 75.7 MB in the beginning and 74.9 MB in the end (delta: 766.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:57,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.9 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.27 ms. Allocated memory is still 125.8 MB. Free memory was 90.5 MB in the beginning and 100.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.21 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 99.3 MB in the end (delta: 764.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 98.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 266.69 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 88.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 292.35 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 75.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.25 ms. Allocated memory is still 125.8 MB. Free memory was 75.7 MB in the beginning and 74.9 MB in the end (delta: 766.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 205.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 27.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.3ms SsaConstructionTime, 34.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:59:58,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:00:00,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:00:00,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:00:00,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:00:00,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:00:00,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:00:00,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:00:00,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:00:00,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:00:00,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:00:00,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:00:00,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:00:00,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:00:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:00:00,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:00:00,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:00:00,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:00:00,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:00:00,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:00:00,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:00:00,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:00:00,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:00:00,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:00:00,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:00:00,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:00:00,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:00:00,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:00:00,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:00:00,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:00:00,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:00:00,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:00:00,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:00:00,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:00:00,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:00:00,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:00:00,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:00:00,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:00:00,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:00:00,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:00:00,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:00:00,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:00:00,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:00:00,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:00:00,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:00:00,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:00:00,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:00:00,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:00:00,518 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:00:00,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:00:00,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:00:00,518 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:00:00,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:00:00,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:00:00,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:00:00,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:00:00,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:00:00,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:00:00,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:00:00,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:00:00,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:00:00,521 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:00:00,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:00:00,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:00:00,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:00:00,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:00:00,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:00:00,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:00:00,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:00:00,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:00,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:00:00,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:00:00,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:00:00,524 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2021-10-13 08:00:00,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:00:00,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:00:00,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:00:00,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:00:00,904 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:00:00,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 08:00:00,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/156efcc1b/99bd4cf197164faabe400d00a6d64e5f/FLAG31da94734 [2021-10-13 08:00:01,535 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:00:01,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 08:00:01,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/156efcc1b/99bd4cf197164faabe400d00a6d64e5f/FLAG31da94734 [2021-10-13 08:00:01,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/data/156efcc1b/99bd4cf197164faabe400d00a6d64e5f [2021-10-13 08:00:01,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:00:01,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:00:01,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:01,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:00:01,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:00:01,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:01" (1/1) ... [2021-10-13 08:00:01,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272983e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:01, skipping insertion in model container [2021-10-13 08:00:01,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:01" (1/1) ... [2021-10-13 08:00:01,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:00:01,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:02,132 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 08:00:02,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:02,153 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:00:02,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 08:00:02,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:02,193 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:00:02,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02 WrapperNode [2021-10-13 08:00:02,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:02,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:02,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:00:02,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:00:02,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:02,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:00:02,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:00:02,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:00:02,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:00:02,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:00:02,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:00:02,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:00:02,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (1/1) ... [2021-10-13 08:00:02,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:02,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:00:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:00:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:00:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:00:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:00:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:00:02,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:00:02,807 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:00:02,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:02 BoogieIcfgContainer [2021-10-13 08:00:02,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:00:02,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:00:02,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:00:02,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:00:02,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:00:01" (1/3) ... [2021-10-13 08:00:02,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727d94d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:02, skipping insertion in model container [2021-10-13 08:00:02,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:02" (2/3) ... [2021-10-13 08:00:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727d94d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:02, skipping insertion in model container [2021-10-13 08:00:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:02" (3/3) ... [2021-10-13 08:00:02,816 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-10-13 08:00:02,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:00:02,821 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:00:02,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:00:02,872 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:00:02,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:00:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:00:02,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:02,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:00:02,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:02,895 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-13 08:00:02,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:02,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313451167] [2021-10-13 08:00:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:02,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:02,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:02,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:02,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:00:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:03,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:00:03,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:04,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:04,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:04,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313451167] [2021-10-13 08:00:04,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313451167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:04,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:04,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 08:00:04,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827176729] [2021-10-13 08:00:04,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:00:04,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:00:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:00:04,609 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:06,697 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-13 08:00:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:00:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:00:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:06,704 INFO L225 Difference]: With dead ends: 21 [2021-10-13 08:00:06,705 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 08:00:06,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1493.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:00:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 08:00:06,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 08:00:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 08:00:06,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-13 08:00:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:06,731 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 08:00:06,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:00:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 08:00:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:00:06,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:06,732 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:06,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 08:00:06,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:06,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-13 08:00:06,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:06,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055949741] [2021-10-13 08:00:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:06,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:06,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:06,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:00:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:07,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:00:07,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:08,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:21,715 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-13 08:00:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-13 08:00:23,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:23,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055949741] [2021-10-13 08:00:23,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055949741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:23,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002225656] [2021-10-13 08:00:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:23,800 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:00:23,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:00:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-13 08:00:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:00:24,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:24,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-13 08:00:29,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1002225656] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:29,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453003833] [2021-10-13 08:00:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:29,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:29,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:00:29,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 08:00:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:32,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:00:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:39,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:01:14,195 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-13 08:01:16,232 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-13 08:01:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-13 08:01:18,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453003833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:01:18,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:01:18,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 7] total 15 [2021-10-13 08:01:18,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73590152] [2021-10-13 08:01:18,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:01:18,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:01:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:01:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=9, NotChecked=46, Total=210 [2021-10-13 08:01:18,219 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:01:28,731 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2021-10-13 08:02:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:04,721 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-13 08:02:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:02:04,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:02:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:04,740 INFO L225 Difference]: With dead ends: 16 [2021-10-13 08:02:04,740 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 08:02:04,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 57277.5ms TimeCoverageRelationStatistics Valid=80, Invalid=189, Unknown=11, NotChecked=62, Total=342 [2021-10-13 08:02:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 08:02:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 08:02:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 08:02:04,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-13 08:02:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:04,744 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 08:02:04,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 08:02:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:02:04,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:04,745 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:04,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 08:02:04,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:05,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-13 08:02:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:02:05,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:02:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 2 times [2021-10-13 08:02:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:05,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123351380] [2021-10-13 08:02:05,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:02:05,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:05,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:05,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:02:05,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:02:05,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:02:05,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:02:05,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:26,193 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 08:02:32,967 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:02:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-10-13 08:02:33,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:38,239 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-13 08:02:47,076 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-13 08:02:56,862 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 08:03:07,427 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 08:03:18,183 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-13 08:03:20,276 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-13 08:03:30,926 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-13 08:03:33,003 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 08:03:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-13 08:03:33,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:03:33,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123351380] [2021-10-13 08:03:33,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123351380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:33,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [592623809] [2021-10-13 08:03:33,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:03:33,005 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:03:33,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:03:33,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:03:33,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 08:03:33,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:03:33,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:03:33,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:03:33,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-10-13 08:03:44,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:04:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-13 08:04:25,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [592623809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:04:25,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039912899] [2021-10-13 08:04:25,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:04:25,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:04:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:25,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:04:25,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 08:04:34,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:04:34,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:04:34,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:04:34,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:03,044 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 16 [2021-10-13 08:05:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-10-13 08:05:11,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:01,892 WARN L207 SmtUtils]: Spent 9.60 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-13 08:06:20,777 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-10-13 08:06:22,833 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-10-13 08:06:42,047 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse3 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse3 .cse0)))))) is different from false [2021-10-13 08:06:44,123 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse0 .cse2))) (let ((.cse1 (fp.div c_currentRoundingMode .cse3 .cse2))) (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse3 .cse0)))))) is different from true [2021-10-13 08:06:54,812 WARN L207 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 7 DAG size of output: 1 [2021-10-13 08:07:05,601 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse2 .cse3)))))) is different from false [2021-10-13 08:07:07,709 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse2 .cse3)))))) is different from true [2021-10-13 08:07:22,722 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3) .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (let ((.cse2 (fp.div c_currentRoundingMode .cse0 .cse3))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse3) .cse2)) (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))))) is different from false [2021-10-13 08:07:24,808 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3) .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (let ((.cse2 (fp.div c_currentRoundingMode .cse0 .cse3))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse3) .cse2)) (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))))) is different from true [2021-10-13 08:07:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 14 not checked. [2021-10-13 08:07:24,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039912899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:24,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:24,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8, 10, 8, 10] total 24 [2021-10-13 08:07:24,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360086293] [2021-10-13 08:07:24,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 08:07:24,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 08:07:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=116, Unknown=28, NotChecked=396, Total=600 [2021-10-13 08:07:24,813 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:29,808 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse5) .cse5) .cse5))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse5))) (let ((.cse4 (fp.div c_currentRoundingMode .cse2 .cse5))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4))) (.cse1 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or .cse0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq .cse2 .cse3) .cse0 .cse1))))))) is different from false [2021-10-13 08:07:31,887 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse5) .cse5) .cse5))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse5))) (let ((.cse4 (fp.div c_currentRoundingMode .cse2 .cse5))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4))) (.cse1 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or .cse0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq .cse2 .cse3) .cse0 .cse1))))))) is different from true [2021-10-13 08:07:33,993 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse2))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse2))) (let ((.cse0 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse2) .cse5)))) (and (or .cse0 .cse1) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) c_ULTIMATE.start_main_~x1~0) (or .cse0 .cse1 (fp.eq .cse3 .cse4)) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from false [2021-10-13 08:07:36,096 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2) .cse2))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse2))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse2))) (let ((.cse0 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse2) .cse5)))) (and (or .cse0 .cse1) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) c_ULTIMATE.start_main_~x1~0) (or .cse0 .cse1 (fp.eq .cse3 .cse4)) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from true [2021-10-13 08:07:38,183 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse4))) (let ((.cse3 (fp.div c_currentRoundingMode .cse0 .cse4))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse4))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse4) .cse5))) (.cse2 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 .cse2 (fp.eq .cse3 .cse0)) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4)) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from false [2021-10-13 08:07:40,264 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse4))) (let ((.cse3 (fp.div c_currentRoundingMode .cse0 .cse4))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 .cse4))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse5 .cse4) .cse5))) (.cse2 (fp.eq .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 .cse2 (fp.eq .cse3 .cse0)) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4)) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from true [2021-10-13 08:07:42,341 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 .cse3))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse3) .cse4))) (.cse2 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse2) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2)))))) is different from false [2021-10-13 08:07:44,402 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 .cse3))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse3) .cse4))) (.cse2 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse2) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3)) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven) (or .cse1 .cse2)))))) is different from true [2021-10-13 08:07:46,449 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse2))) (let ((.cse0 (fp.eq .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse3 .cse2) .cse3)))) (and (or .cse0 .cse1) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) .cse2) .cse2)) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) .cse0 .cse1) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-10-13 08:07:48,685 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:07:50,804 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0) c_ULTIMATE.start_main_~x1~0) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:08:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:09,036 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-13 08:08:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 08:08:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 08:08:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:09,078 INFO L225 Difference]: With dead ends: 17 [2021-10-13 08:08:09,078 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 08:08:09,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 19 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 136785.5ms TimeCoverageRelationStatistics Valid=74, Invalid=119, Unknown=39, NotChecked=760, Total=992 [2021-10-13 08:08:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 08:08:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 08:08:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 08:08:09,082 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-10-13 08:08:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:09,083 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 08:08:09,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 08:08:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:08:09,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:09,084 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:09,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:09,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 08:08:09,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-13 08:08:09,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:08:09,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:09,689 INFO L82 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 3 times [2021-10-13 08:08:09,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:08:09,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817218672] [2021-10-13 08:08:09,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:08:09,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:08:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:08:09,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:08:09,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:08:09,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 08:08:09,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:08:09,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:08:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:20,438 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_38 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_38)))) (= (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 08:08:34,959 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_38 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_38)))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 08:09:20,838 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse2))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (let ((.cse1 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0))))) is different from false [2021-10-13 08:09:22,872 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse2))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (let ((.cse1 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0))))) is different from true [2021-10-13 08:09:39,166 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2021-10-13 08:09:41,201 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_38 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_38 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_38)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2021-10-13 08:09:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 6 not checked. [2021-10-13 08:09:41,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:53,796 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) is different from true [2021-10-13 08:10:05,002 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_40 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_40 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_40))))) is different from false [2021-10-13 08:10:07,046 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_40 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_40 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_40))))) is different from true [2021-10-13 08:11:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 11 not checked. [2021-10-13 08:11:05,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:05,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817218672] [2021-10-13 08:11:05,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817218672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:05,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643685928] [2021-10-13 08:11:05,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:11:05,921 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:11:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:11:05,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:11:05,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 08:11:07,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 08:11:07,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:11:07,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:11:07,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:36,112 WARN L207 SmtUtils]: Spent 9.49 s on a formula simplification that was a NOOP. DAG size: 17 [2021-10-13 08:11:50,677 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_46 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) (and (= c_ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 08:12:35,126 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_46 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse2)))))))) is different from false [2021-10-13 08:12:37,158 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_46 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse2)))))))) is different from true [2021-10-13 08:12:52,448 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_46 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2021-10-13 08:12:54,482 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_46 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2021-10-13 08:12:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 08:12:54,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:10,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_48 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_48 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_48) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from false [2021-10-13 08:13:12,971 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_48 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_48 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_48) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from true [2021-10-13 08:14:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 11 not checked. [2021-10-13 08:14:10,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643685928] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:14:10,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-13 08:14:10,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-10-13 08:14:10,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996660340] [2021-10-13 08:14:10,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:14:10,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:14:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=39, Unknown=20, NotChecked=210, Total=306 [2021-10-13 08:14:10,870 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:15,677 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 08:14:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:14:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 08:14:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:15,719 INFO L225 Difference]: With dead ends: 13 [2021-10-13 08:14:15,719 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:14:15,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 60367.0ms TimeCoverageRelationStatistics Valid=37, Invalid=39, Unknown=20, NotChecked=210, Total=306 [2021-10-13 08:14:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:14:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:14:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:14:15,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-13 08:14:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:15,720 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:14:15,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:14:15,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:14:15,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:14:15,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:15,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:16,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:16,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:14:16,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:14:16,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:14:16,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:14:27,253 WARN L207 SmtUtils]: Spent 11.05 s on a formula simplification that was a NOOP. DAG size: 17 [2021-10-13 08:14:27,275 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:14:27,275 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (= (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_46 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_46 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) (and (= ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_46))))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 08:14:27,275 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-10-13 08:14:27,275 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-13 08:14:27,276 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-13 08:14:27,276 INFO L853 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-13 08:14:27,276 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:14:27,276 INFO L853 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-13 08:14:27,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:14:27,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:14:27,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 08:14:27,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:14:27,292 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,296 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,300 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,300 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,303 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,307 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,308 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,309 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:14:27 BoogieIcfgContainer [2021-10-13 08:14:27,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:14:27,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:14:27,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:14:27,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:14:27,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:02" (3/4) ... [2021-10-13 08:14:27,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:14:27,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 08:14:27,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:14:27,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:14:27,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:14:27,353 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0_46 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_46, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_46, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_46))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-13 08:14:27,371 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:14:27,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:14:27,372 INFO L168 Benchmark]: Toolchain (without parser) took 865448.19 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 38.9 MB in the beginning and 26.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,372 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:27,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.98 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 41.7 MB in the end (delta: -3.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,373 INFO L168 Benchmark]: Boogie Preprocessor took 49.08 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 39.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:27,374 INFO L168 Benchmark]: RCFGBuilder took 517.57 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 30.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,374 INFO L168 Benchmark]: TraceAbstraction took 864498.96 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.8 MB in the beginning and 28.8 MB in the end (delta: 933.0 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,375 INFO L168 Benchmark]: Witness Printer took 61.07 ms. Allocated memory is still 77.6 MB. Free memory was 28.8 MB in the beginning and 26.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.98 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 41.7 MB in the end (delta: -3.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.07 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.08 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 39.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.57 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 30.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 864498.96 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.8 MB in the beginning and 28.8 MB in the end (delta: 933.0 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.07 ms. Allocated memory is still 77.6 MB. Free memory was 28.8 MB in the beginning and 26.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 864417.5ms, OverallIterations: 4, TraceHistogramMax: 6, EmptinessCheckTime: 9.6ms, AutomataDifference: 97752.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 11146.5ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 19 SDslu, 41 SDs, 0 SdLazy, 79 SolverSat, 15 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 54122.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 31 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 255923.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 858 FormulaSimplificationTreeSizeReduction, 56.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 11084.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 110.0ms SsaConstructionTime, 14886.7ms SatisfiabilityAnalysisTime, 738030.6ms InterpolantComputationTime, 87 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 156 ConstructedInterpolants, 20 QuantifiedInterpolants, 2917 SizeOfPredicates, 45 NumberOfNonLiveVariables, 312 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 56/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-10-13 08:14:27,389 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,389 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2021-10-13 08:14:27,389 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,389 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,390 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,390 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,390 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,391 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,391 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_46,QUANTIFIED] [2021-10-13 08:14:27,391 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0_46 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_46, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_46, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_46))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2021-10-13 08:14:27,392 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 08:14:27,392 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-13 08:14:27,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cc5c33-f778-49e4-b5e9-49f11bda22c6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...