./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:59:44,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:59:44,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:59:44,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:59:44,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:59:44,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:59:44,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:59:44,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:59:44,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:59:44,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:59:44,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:59:44,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:59:44,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:59:44,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:59:44,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:59:44,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:59:44,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:59:44,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:59:44,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:59:44,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:59:44,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:59:44,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:59:44,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:59:44,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:59:44,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:59:44,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:59:44,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:59:44,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:59:44,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:59:44,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:59:44,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:59:44,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:59:44,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:59:44,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:59:44,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:59:44,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:59:44,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:59:44,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:59:44,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:59:44,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:59:44,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:59:44,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:59:44,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:59:44,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:59:44,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:59:44,726 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:59:44,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:59:44,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:59:44,727 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:59:44,728 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:59:44,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:59:44,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:59:44,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:59:44,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:59:44,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:59:44,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:59:44,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:59:44,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:59:44,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:59:44,731 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-12-09 18:59:44,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:59:44,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:59:44,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:59:44,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:59:44,933 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:59:44,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-12-09 18:59:44,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/9c0d568e0/0cf564041be440969ff71b416c6700ab/FLAG63afba394 [2020-12-09 18:59:45,325 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:59:45,325 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-12-09 18:59:45,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/9c0d568e0/0cf564041be440969ff71b416c6700ab/FLAG63afba394 [2020-12-09 18:59:45,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/9c0d568e0/0cf564041be440969ff71b416c6700ab [2020-12-09 18:59:45,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:59:45,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:59:45,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:59:45,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:59:45,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:59:45,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0d879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45, skipping insertion in model container [2020-12-09 18:59:45,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:59:45,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:59:45,481 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2020-12-09 18:59:45,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:59:45,492 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:59:45,510 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2020-12-09 18:59:45,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:59:45,523 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:59:45,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45 WrapperNode [2020-12-09 18:59:45,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:59:45,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:59:45,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:59:45,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:59:45,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:59:45,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:59:45,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:59:45,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:59:45,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... [2020-12-09 18:59:45,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:59:45,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:59:45,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:59:45,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:59:45,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:59:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:59:45,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 18:59:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:59:45,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:59:45,967 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 18:59:45,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:45 BoogieIcfgContainer [2020-12-09 18:59:45,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:59:45,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:59:45,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:59:45,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:59:45,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:59:45" (1/3) ... [2020-12-09 18:59:45,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac66f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:45, skipping insertion in model container [2020-12-09 18:59:45,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:45" (2/3) ... [2020-12-09 18:59:45,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac66f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:45, skipping insertion in model container [2020-12-09 18:59:45,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:45" (3/3) ... [2020-12-09 18:59:45,977 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-12-09 18:59:45,989 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:59:45,993 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:59:46,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:59:46,025 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:59:46,025 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:59:46,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:59:46,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:59:46,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:59:46,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:59:46,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:59:46,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:59:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 18:59:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 18:59:46,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:59:46,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:59:46,042 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:59:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:59:46,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1229529737, now seen corresponding path program 1 times [2020-12-09 18:59:46,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:59:46,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414506179] [2020-12-09 18:59:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:59:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:59:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:59:46,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414506179] [2020-12-09 18:59:46,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:59:46,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:59:46,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931354891] [2020-12-09 18:59:46,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:59:46,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:59:46,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:59:46,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:59:46,159 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 18:59:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:59:46,168 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-12-09 18:59:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:59:46,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 18:59:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:59:46,175 INFO L225 Difference]: With dead ends: 31 [2020-12-09 18:59:46,175 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 18:59:46,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:59:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 18:59:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 18:59:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 18:59:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-09 18:59:46,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-12-09 18:59:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:59:46,202 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-09 18:59:46,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:59:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-09 18:59:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:59:46,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:59:46,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:59:46,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:59:46,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:59:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:59:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1601519704, now seen corresponding path program 1 times [2020-12-09 18:59:46,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:59:46,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164081596] [2020-12-09 18:59:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:59:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:59:46,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:59:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:59:46,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:59:46,317 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:59:46,317 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:59:46,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:59:46,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:59:46 BoogieIcfgContainer [2020-12-09 18:59:46,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:59:46,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:59:46,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:59:46,338 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:59:46,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:45" (3/4) ... [2020-12-09 18:59:46,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:59:46,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:59:46,342 INFO L168 Benchmark]: Toolchain (without parser) took 998.33 ms. Allocated memory is still 92.3 MB. Free memory was 53.2 MB in the beginning and 60.5 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:46,342 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:46,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.29 ms. Allocated memory is still 92.3 MB. Free memory was 53.0 MB in the beginning and 66.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:46,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:46,344 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 63.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:46,344 INFO L168 Benchmark]: RCFGBuilder took 383.67 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 54.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:46,345 INFO L168 Benchmark]: TraceAbstraction took 366.31 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 61.0 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:46,345 INFO L168 Benchmark]: Witness Printer took 2.91 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 60.5 MB in the end (delta: 485.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:46,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory was 69.5 MB in the beginning and 69.4 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 180.29 ms. Allocated memory is still 92.3 MB. Free memory was 53.0 MB in the beginning and 66.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 63.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 383.67 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 54.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366.31 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 61.0 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.91 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 60.5 MB in the end (delta: 485.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: 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 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L74] reach_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:59:48,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:59:48,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:59:48,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:59:48,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:59:48,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:59:48,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:59:48,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:59:48,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:59:48,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:59:48,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:59:48,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:59:48,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:59:48,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:59:48,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:59:48,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:59:48,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:59:48,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:59:48,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:59:48,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:59:48,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:59:48,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:59:48,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:59:48,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:59:48,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:59:48,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:59:48,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:59:48,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:59:48,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:59:48,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:59:48,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:59:48,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:59:48,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:59:48,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:59:48,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:59:48,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:59:48,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:59:48,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:59:48,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:59:48,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:59:48,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:59:48,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:59:48,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:59:48,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:59:48,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:59:48,091 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:59:48,091 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:59:48,091 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:59:48,091 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:59:48,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:59:48,091 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:59:48,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:59:48,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:59:48,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:59:48,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:59:48,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:59:48,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:59:48,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:59:48,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:59:48,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:59:48,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:59:48,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:59:48,096 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-12-09 18:59:48,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:59:48,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:59:48,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:59:48,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:59:48,335 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:59:48,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-12-09 18:59:48,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/493b16254/32254d57a136448d845c4cb72d71f63d/FLAG2e8f29186 [2020-12-09 18:59:48,762 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:59:48,762 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-12-09 18:59:48,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/493b16254/32254d57a136448d845c4cb72d71f63d/FLAG2e8f29186 [2020-12-09 18:59:48,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/data/493b16254/32254d57a136448d845c4cb72d71f63d [2020-12-09 18:59:48,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:59:48,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:59:48,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:59:48,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:59:48,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:59:48,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:48,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4644b1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48, skipping insertion in model container [2020-12-09 18:59:48,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:48,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:59:48,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:59:48,911 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2020-12-09 18:59:48,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:59:48,923 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:59:48,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2020-12-09 18:59:48,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:59:48,968 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:59:48,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48 WrapperNode [2020-12-09 18:59:48,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:59:48,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:59:48,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:59:48,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:59:48,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:48,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:59:49,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:59:49,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:59:49,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:59:49,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... [2020-12-09 18:59:49,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:59:49,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:59:49,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:59:49,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:59:49,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:59:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:59:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:59:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 18:59:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:59:49,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:59:49,623 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 18:59:49,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:49 BoogieIcfgContainer [2020-12-09 18:59:49,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:59:49,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:59:49,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:59:49,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:59:49,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:59:48" (1/3) ... [2020-12-09 18:59:49,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f4f9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:49, skipping insertion in model container [2020-12-09 18:59:49,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:59:48" (2/3) ... [2020-12-09 18:59:49,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f4f9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:59:49, skipping insertion in model container [2020-12-09 18:59:49,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:49" (3/3) ... [2020-12-09 18:59:49,630 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-12-09 18:59:49,639 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:59:49,641 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:59:49,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:59:49,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:59:49,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:59:49,665 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:59:49,665 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:59:49,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:59:49,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:59:49,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:59:49,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:59:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-09 18:59:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:59:49,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:59:49,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:59:49,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:59:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:59:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-12-09 18:59:49,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:59:49,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679821832] [2020-12-09 18:59:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 18:59:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:59:49,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:59:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:59:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:59:49,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:59:49,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679821832] [2020-12-09 18:59:49,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:59:49,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:59:49,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734446824] [2020-12-09 18:59:49,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:59:49,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:59:49,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:59:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:59:49,821 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-09 18:59:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:59:49,832 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2020-12-09 18:59:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:59:49,833 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 18:59:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:59:49,839 INFO L225 Difference]: With dead ends: 50 [2020-12-09 18:59:49,840 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:59:49,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:59:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:59:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 18:59:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:59:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-09 18:59:49,867 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-12-09 18:59:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:59:49,867 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-09 18:59:49,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:59:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-09 18:59:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:59:49,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:59:49,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:59:50,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:59:50,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:59:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:59:50,070 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-12-09 18:59:50,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:59:50,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550533120] [2020-12-09 18:59:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 18:59:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:59:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 18:59:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:59:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:59:50,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:59:50,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550533120] [2020-12-09 18:59:50,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:59:50,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 18:59:50,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488775946] [2020-12-09 18:59:50,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:59:50,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:59:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:59:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:59:50,246 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 6 states. [2020-12-09 18:59:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:59:50,577 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-12-09 18:59:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:59:50,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 18:59:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:59:50,578 INFO L225 Difference]: With dead ends: 34 [2020-12-09 18:59:50,578 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 18:59:50,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:59:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 18:59:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 18:59:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 18:59:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-09 18:59:50,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-12-09 18:59:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:59:50,583 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-09 18:59:50,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:59:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-09 18:59:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:59:50,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:59:50,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:59:50,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:59:50,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:59:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:59:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-12-09 18:59:50,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:59:50,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579513561] [2020-12-09 18:59:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 18:59:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:59:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:59:50,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:59:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:59:51,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:59:51,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579513561] [2020-12-09 18:59:51,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:59:51,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:59:51,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088185718] [2020-12-09 18:59:51,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:59:51,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:59:51,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:59:51,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:59:51,046 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-12-09 18:59:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:59:51,138 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 18:59:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:59:51,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 18:59:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:59:51,139 INFO L225 Difference]: With dead ends: 18 [2020-12-09 18:59:51,139 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:59:51,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:59:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:59:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:59:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:59:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:59:51,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 18:59:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:59:51,140 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:59:51,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:59:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:59:51,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:59:51,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:59:51,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:59:51,437 INFO L262 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L265 CegarLoopResult]: At program point L78(lines 61 79) the Hoare annotation is: true [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-12-09 18:59:51,438 INFO L262 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L258 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L258 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x)) [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-12-09 18:59:51,439 INFO L262 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-12-09 18:59:51,443 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:59:51 BoogieIcfgContainer [2020-12-09 18:59:51,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:59:51,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:59:51,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:59:51,452 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:59:51,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:59:49" (3/4) ... [2020-12-09 18:59:51,454 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:59:51,461 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 18:59:51,461 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 18:59:51,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:59:51,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:59:51,478 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:59:51,478 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:59:51,479 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:59:51,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c42becb-83f2-49af-b4d6-8773a2e106ca/bin/utaipan/witness.graphml [2020-12-09 18:59:51,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:59:51,493 INFO L168 Benchmark]: Toolchain (without parser) took 2712.26 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 39.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,494 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:51,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.68 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 43.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:59:51,495 INFO L168 Benchmark]: Boogie Preprocessor took 32.64 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,495 INFO L168 Benchmark]: RCFGBuilder took 583.66 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 57.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,496 INFO L168 Benchmark]: TraceAbstraction took 1826.30 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 42.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,496 INFO L168 Benchmark]: Witness Printer took 40.38 ms. Allocated memory is still 79.7 MB. Free memory was 42.0 MB in the beginning and 39.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:59:51,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.68 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 43.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 41.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.64 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 583.66 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 57.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1826.30 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 42.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Witness Printer took 40.38 ms. Allocated memory is still 79.7 MB. Free memory was 42.0 MB in the beginning and 39.3 MB in the end (delta: 2.7 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 18:59:51,502 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant [2020-12-09 18:59:51,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 15]: Loop Invariant [2020-12-09 18:59:51,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:59:51,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 49 SDs, 0 SdLazy, 39 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 10 QuantifiedInterpolants, 1505 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...