./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................... 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_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 f841b6aef5f414fec53f63b7daa049c759482c9a .................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:51:36,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:51:36,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:51:36,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:51:36,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:51:36,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:51:36,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:51:36,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:51:36,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:51:36,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:51:36,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:51:36,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:51:36,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:51:36,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:51:36,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:51:36,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:51:36,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:51:36,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:51:36,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:51:36,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:51:36,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:51:36,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:51:36,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:51:36,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:51:36,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:51:36,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:51:36,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:51:36,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:51:36,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:51:36,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:51:36,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:51:36,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:51:36,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:51:36,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:51:36,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:51:36,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:51:36,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:51:36,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:51:36,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:51:36,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:51:36,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:51:36,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:51:36,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:51:36,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:51:36,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:51:36,463 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:51:36,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:51:36,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:51:36,465 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:51:36,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:51:36,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:51:36,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:51:36,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:51:36,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:51:36,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:51:36,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:51:36,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:51:36,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:51:36,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:51:36,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:51:36,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:51:36,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:51:36,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:51:36,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:51:36,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:51:36,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:51:36,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:51:36,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:51:36,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:36,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:51:36,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:51:36,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:51:36,470 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:51:36,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:51:36,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:51:36,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:51:36,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:51:36,470 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_b0afcef5-bffa-4887-8528-125704ba11a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-22 12:51:36,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:51:36,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:51:36,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:51:36,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:51:36,742 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:51:36,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-22 12:51:36,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/09ebc38f6/7a0adb45bf83430f87f1380c4bc9d2ec/FLAG9e6cc6f69 [2020-11-22 12:51:37,295 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:51:37,295 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-22 12:51:37,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/09ebc38f6/7a0adb45bf83430f87f1380c4bc9d2ec/FLAG9e6cc6f69 [2020-11-22 12:51:37,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/09ebc38f6/7a0adb45bf83430f87f1380c4bc9d2ec [2020-11-22 12:51:37,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:51:37,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:51:37,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:37,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:51:37,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:51:37,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e87c379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37, skipping insertion in model container [2020-11-22 12:51:37,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:51:37,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:51:37,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:37,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:51:37,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:37,898 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:51:37,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37 WrapperNode [2020-11-22 12:51:37,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:37,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:37,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:51:37,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:51:37,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:37,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:51:37,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:51:37,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:51:37,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... [2020-11-22 12:51:37,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:51:37,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:51:37,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:51:37,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:51:37,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 [2020-11-22 12:51:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:51:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:51:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 12:51:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:51:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:51:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:51:38,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:51:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:51:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:51:38,591 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:51:38,591 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 12:51:38,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:38 BoogieIcfgContainer [2020-11-22 12:51:38,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:51:38,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:51:38,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:51:38,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:51:38,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:37" (1/3) ... [2020-11-22 12:51:38,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e43145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:38, skipping insertion in model container [2020-11-22 12:51:38,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:37" (2/3) ... [2020-11-22 12:51:38,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e43145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:38, skipping insertion in model container [2020-11-22 12:51:38,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:38" (3/3) ... [2020-11-22 12:51:38,609 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-22 12:51:38,626 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:51:38,630 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:51:38,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:51:38,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:51:38,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:51:38,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:51:38,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:51:38,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:51:38,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:51:38,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:51:38,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:51:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:51:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:51:38,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:38,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:51:38,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2131324155, now seen corresponding path program 1 times [2020-11-22 12:51:38,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:38,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001008098] [2020-11-22 12:51:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:38,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001008098] [2020-11-22 12:51:38,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:38,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:51:38,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134980387] [2020-11-22 12:51:38,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:51:38,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:38,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:51:38,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:51:38,861 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-22 12:51:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:38,875 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-11-22 12:51:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:51:38,877 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-22 12:51:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:38,884 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:51:38,884 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 12:51:38,887 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 [2020-11-22 12:51:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 12:51:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 12:51:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 12:51:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-11-22 12:51:38,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-11-22 12:51:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:38,920 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-11-22 12:51:38,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:51:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-11-22 12:51:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:51:38,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:38,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:51:38,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:51:38,922 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:38,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1451663902, now seen corresponding path program 1 times [2020-11-22 12:51:38,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:38,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38301643] [2020-11-22 12:51:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:51:38,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:51:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:51:39,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:51:39,030 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:51:39,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:51:39,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:51:39,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:51:39 BoogieIcfgContainer [2020-11-22 12:51:39,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:51:39,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:51:39,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:51:39,068 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:51:39,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:38" (3/4) ... [2020-11-22 12:51:39,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:51:39,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:51:39,074 INFO L168 Benchmark]: Toolchain (without parser) took 1386.65 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 56.8 MB in the beginning and 60.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:39,074 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:39,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.18 ms. Allocated memory is still 86.0 MB. Free memory was 56.6 MB in the beginning and 46.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:39,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 86.0 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:39,077 INFO L168 Benchmark]: Boogie Preprocessor took 40.18 ms. Allocated memory is still 86.0 MB. Free memory was 45.4 MB in the beginning and 44.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:39,078 INFO L168 Benchmark]: RCFGBuilder took 617.57 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 44.0 MB in the beginning and 82.3 MB in the end (delta: -38.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:39,084 INFO L168 Benchmark]: TraceAbstraction took 469.10 ms. Allocated memory is still 115.3 MB. Free memory was 81.9 MB in the beginning and 61.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:39,085 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 115.3 MB. Free memory was 61.0 MB in the beginning and 60.6 MB in the end (delta: 398.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:39,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.18 ms. Allocated memory is still 86.0 MB. Free memory was 56.6 MB in the beginning and 46.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 86.0 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.18 ms. Allocated memory is still 86.0 MB. Free memory was 45.4 MB in the beginning and 44.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 617.57 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 44.0 MB in the beginning and 82.3 MB in the end (delta: -38.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 469.10 ms. Allocated memory is still 115.3 MB. Free memory was 81.9 MB in the beginning and 61.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.95 ms. Allocated memory is still 115.3 MB. Free memory was 61.0 MB in the beginning and 60.6 MB in the end (delta: 398.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1010.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 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=11occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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-a4ecdab [2020-11-22 12:51:41,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:51:41,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:51:41,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:51:41,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:51:41,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:51:41,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:51:41,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:51:41,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:51:41,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:51:41,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:51:41,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:51:41,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:51:41,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:51:41,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:51:41,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:51:41,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:51:41,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:51:41,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:51:41,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:51:41,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:51:41,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:51:41,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:51:41,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:51:41,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:51:41,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:51:41,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:51:41,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:51:41,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:51:41,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:51:41,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:51:41,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:51:41,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:51:41,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:51:41,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:51:41,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:51:41,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:51:41,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:51:41,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:51:41,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:51:41,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:51:41,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:51:41,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:51:41,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:51:41,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:51:41,672 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:51:41,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:51:41,672 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:51:41,672 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:51:41,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:51:41,673 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:51:41,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:51:41,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:51:41,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:51:41,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:51:41,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:51:41,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:51:41,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:51:41,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:51:41,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:51:41,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:51:41,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:51:41,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:51:41,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:51:41,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:51:41,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:51:41,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:51:41,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:51:41,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:51:41,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:41,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:51:41,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:51:41,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:51:41,680 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:51:41,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:51:41,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:51:41,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:51:41,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:51:41,682 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_b0afcef5-bffa-4887-8528-125704ba11a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-22 12:51:42,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:51:42,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:51:42,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:51:42,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:51:42,155 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:51:42,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-22 12:51:42,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/bef9ecf60/031ad987536547b099c35ad0a5503a1b/FLAG41ce0e5fb [2020-11-22 12:51:42,715 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:51:42,715 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-22 12:51:42,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/bef9ecf60/031ad987536547b099c35ad0a5503a1b/FLAG41ce0e5fb [2020-11-22 12:51:43,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/data/bef9ecf60/031ad987536547b099c35ad0a5503a1b [2020-11-22 12:51:43,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:51:43,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:51:43,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:43,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:51:43,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:51:43,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3921dbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43, skipping insertion in model container [2020-11-22 12:51:43,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:51:43,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:51:43,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:43,268 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:51:43,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:43,306 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:51:43,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43 WrapperNode [2020-11-22 12:51:43,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:43,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:43,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:51:43,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:51:43,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:43,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:51:43,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:51:43,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:51:43,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... [2020-11-22 12:51:43,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:51:43,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:51:43,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:51:43,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:51:43,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 [2020-11-22 12:51:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:51:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:51:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-22 12:51:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:51:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:51:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:51:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 12:51:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 12:51:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:51:44,028 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:51:44,030 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 12:51:44,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:44 BoogieIcfgContainer [2020-11-22 12:51:44,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:51:44,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:51:44,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:51:44,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:51:44,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:43" (1/3) ... [2020-11-22 12:51:44,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee7bba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:44, skipping insertion in model container [2020-11-22 12:51:44,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:43" (2/3) ... [2020-11-22 12:51:44,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee7bba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:44, skipping insertion in model container [2020-11-22 12:51:44,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:44" (3/3) ... [2020-11-22 12:51:44,060 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-22 12:51:44,074 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:51:44,079 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:51:44,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:51:44,127 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:51:44,128 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:51:44,128 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:51:44,128 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:51:44,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:51:44,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:51:44,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:51:44,129 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:51:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-22 12:51:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:51:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:44,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:51:44,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-11-22 12:51:44,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:51:44,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27199022] [2020-11-22 12:51:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 [2020-11-22 12:51:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:44,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:51:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:44,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:44,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27199022] [2020-11-22 12:51:44,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:44,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:51:44,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456957529] [2020-11-22 12:51:44,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:51:44,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:51:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:51:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:51:44,411 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-22 12:51:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:44,429 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-22 12:51:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:51:44,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-22 12:51:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:44,456 INFO L225 Difference]: With dead ends: 29 [2020-11-22 12:51:44,456 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 12:51:44,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:51:44,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 12:51:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 12:51:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 12:51:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-22 12:51:44,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-11-22 12:51:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:44,491 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-22 12:51:44,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:51:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-22 12:51:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:51:44,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:44,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:51:44,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:51:44,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-11-22 12:51:44,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:51:44,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023349349] [2020-11-22 12:51:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/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 [2020-11-22 12:51:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:44,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 12:51:44,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:45,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:45,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023349349] [2020-11-22 12:51:45,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:45,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-22 12:51:45,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992772746] [2020-11-22 12:51:45,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:51:45,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:51:45,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:51:45,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:51:45,333 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 12 states. [2020-11-22 12:51:45,931 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-22 12:51:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:45,933 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-11-22 12:51:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:51:45,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-22 12:51:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:45,933 INFO L225 Difference]: With dead ends: 12 [2020-11-22 12:51:45,933 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:51:45,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:51:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:51:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:51:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:51:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:51:45,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-22 12:51:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:45,936 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:51:45,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:51:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:51:45,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:51:46,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:51:46,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:51:46,244 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:51:46,244 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-22 12:51:46,244 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-22 12:51:46,244 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L277 CegarLoopResult]: At program point L46(lines 31 47) the Hoare annotation is: true [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-22 12:51:46,245 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2020-11-22 12:51:46,246 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-22 12:51:46,246 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-11-22 12:51:46,262 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,264 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,266 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,267 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:51:46 BoogieIcfgContainer [2020-11-22 12:51:46,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:51:46,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:51:46,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:51:46,273 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:51:46,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:44" (3/4) ... [2020-11-22 12:51:46,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:51:46,289 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 12:51:46,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:51:46,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:51:46,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:51:46,339 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b0afcef5-bffa-4887-8528-125704ba11a5/bin/utaipan/witness.graphml [2020-11-22 12:51:46,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:51:46,344 INFO L168 Benchmark]: Toolchain (without parser) took 3256.32 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 30.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,347 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:46,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.31 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 26.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.05 ms. Allocated memory is still 56.6 MB. Free memory was 26.5 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,351 INFO L168 Benchmark]: Boogie Preprocessor took 58.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:46,352 INFO L168 Benchmark]: RCFGBuilder took 581.57 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.8 MB in the beginning and 51.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,353 INFO L168 Benchmark]: TraceAbstraction took 2217.29 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 32.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,354 INFO L168 Benchmark]: Witness Printer took 67.39 ms. Allocated memory is still 69.2 MB. Free memory was 32.1 MB in the beginning and 30.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:46,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.31 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 26.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.05 ms. Allocated memory is still 56.6 MB. Free memory was 26.5 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 37.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 581.57 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.8 MB in the beginning and 51.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2217.29 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 32.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.39 ms. Allocated memory is still 69.2 MB. Free memory was 32.1 MB in the beginning and 30.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2020-11-22 12:51:46,374 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,374 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) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant [2020-11-22 12:51:46,386 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:51:46,387 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) && 1bv32 == \result) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 1568 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...