./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --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_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 dcedd10b8fa79fdd7f584d24ebbda0efe903404a ................................................................................................................................................................................................................................................ 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_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 dcedd10b8fa79fdd7f584d24ebbda0efe903404a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:05:19,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:19,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:05:19,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:05:19,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:05:19,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:05:19,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:05:19,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:05:19,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:05:19,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:05:19,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:05:19,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:05:19,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:05:19,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:05:19,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:05:19,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:05:19,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:05:19,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:05:19,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:05:19,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:05:19,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:05:19,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:05:19,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:05:19,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:05:19,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:05:19,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:05:19,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:05:19,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:05:19,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:05:19,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:05:19,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:05:19,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:05:19,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:05:19,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:05:19,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:05:19,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:05:19,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:05:19,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:05:19,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:05:19,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:05:19,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:05:19,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:05:19,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:05:19,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:05:19,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:05:19,505 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:05:19,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:05:19,506 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:05:19,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:05:19,506 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:05:19,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:05:19,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:05:19,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:05:19,508 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:05:19,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:05:19,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:05:19,508 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:05:19,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:05:19,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:05:19,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:05:19,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:05:19,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:05:19,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:05:19,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:05:19,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:05:19,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:05:19,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:05:19,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:05:19,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:05:19,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:05:19,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:05:19,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:05:19,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:05:19,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:19,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:05:19,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:05:19,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:05:19,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:05:19,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:05:19,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:05:19,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:05:19,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:05:19,515 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_0924c861-73da-40c6-ae31-09dd26b9ddd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcedd10b8fa79fdd7f584d24ebbda0efe903404a [2020-11-30 02:05:19,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:05:19,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:05:19,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:05:19,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:05:19,820 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:05:19,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2020-11-30 02:05:19,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/f54d6b8ea/e340583415d346d3906f54ca97830e0c/FLAGf17516347 [2020-11-30 02:05:20,448 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:05:20,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/sv-benchmarks/c/floats-cbmc-regression/float20.i [2020-11-30 02:05:20,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/f54d6b8ea/e340583415d346d3906f54ca97830e0c/FLAGf17516347 [2020-11-30 02:05:20,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/f54d6b8ea/e340583415d346d3906f54ca97830e0c [2020-11-30 02:05:20,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:05:20,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:05:20,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:20,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:05:20,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:05:20,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:20" (1/1) ... [2020-11-30 02:05:20,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b9747b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:20, skipping insertion in model container [2020-11-30 02:05:20,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:20" (1/1) ... [2020-11-30 02:05:20,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:05:20,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:05:21,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:21,110 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:05:21,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:21,151 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:05:21,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21 WrapperNode [2020-11-30 02:05:21,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:21,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:21,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:05:21,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:05:21,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:21,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:05:21,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:05:21,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:05:21,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:05:21,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:05:21,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:05:21,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:05:21,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 [2020-11-30 02:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:05:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:05:21,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:05:21,690 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:05:21,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:21 BoogieIcfgContainer [2020-11-30 02:05:21,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:05:21,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:05:21,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:05:21,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:05:21,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:05:20" (1/3) ... [2020-11-30 02:05:21,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2e7df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:21, skipping insertion in model container [2020-11-30 02:05:21,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (2/3) ... [2020-11-30 02:05:21,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2e7df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:21, skipping insertion in model container [2020-11-30 02:05:21,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:21" (3/3) ... [2020-11-30 02:05:21,701 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2020-11-30 02:05:21,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:05:21,717 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 02:05:21,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 02:05:21,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:05:21,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:05:21,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:05:21,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:05:21,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:05:21,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:05:21,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:05:21,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:05:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 02:05:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:05:21,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:21,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:05:21,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash 3586997, now seen corresponding path program 1 times [2020-11-30 02:05:21,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:21,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897779874] [2020-11-30 02:05:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:05:21,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:05:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:05:21,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:05:21,937 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:05:21,938 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:05:21,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:05:21,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:05:21 BoogieIcfgContainer [2020-11-30 02:05:21,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:05:21,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:05:21,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:05:21,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:05:21,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:21" (3/4) ... [2020-11-30 02:05:21,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:05:21,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:05:21,983 INFO L168 Benchmark]: Toolchain (without parser) took 1144.32 ms. Allocated memory is still 115.3 MB. Free memory was 82.0 MB in the beginning and 55.4 MB in the end (delta: 26.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:21,986 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:21,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.55 ms. Allocated memory is still 115.3 MB. Free memory was 81.8 MB in the beginning and 89.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:21,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.85 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 88.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:21,991 INFO L168 Benchmark]: Boogie Preprocessor took 21.19 ms. Allocated memory is still 115.3 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:21,991 INFO L168 Benchmark]: RCFGBuilder took 483.05 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 68.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:21,993 INFO L168 Benchmark]: TraceAbstraction took 276.11 ms. Allocated memory is still 115.3 MB. Free memory was 67.1 MB in the beginning and 56.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:21,994 INFO L168 Benchmark]: Witness Printer took 6.72 ms. Allocated memory is still 115.3 MB. Free memory was 56.0 MB in the beginning and 55.4 MB in the end (delta: 631.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:22,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.55 ms. Allocated memory is still 115.3 MB. Free memory was 81.8 MB in the beginning and 89.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.85 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 88.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.19 ms. Allocated memory is still 115.3 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 483.05 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 68.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 276.11 ms. Allocated memory is still 115.3 MB. Free memory was 67.1 MB in the beginning and 56.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.72 ms. Allocated memory is still 115.3 MB. Free memory was 56.0 MB in the beginning and 55.4 MB in the end (delta: 631.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; [L21] COND TRUE !(ulpdiff == 0x1p-126f) [L13] COND FALSE !(0) [L13] __assert_fail ("0", "float20.c", 4, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:05:24,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:24,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:05:24,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:05:24,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:05:24,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:05:24,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:05:24,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:05:24,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:05:24,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:05:24,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:05:24,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:05:24,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:05:24,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:05:24,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:05:24,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:05:24,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:05:24,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:05:24,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:05:24,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:05:24,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:05:24,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:05:24,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:05:24,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:05:24,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:05:24,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:05:24,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:05:24,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:05:24,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:05:24,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:05:24,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:05:24,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:05:24,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:05:24,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:05:24,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:05:24,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:05:24,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:05:24,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:05:24,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:05:24,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:05:24,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:05:24,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:05:24,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:05:24,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:05:24,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:05:24,654 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:05:24,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:05:24,654 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:05:24,655 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:05:24,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:05:24,655 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:05:24,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:05:24,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:05:24,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:05:24,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:05:24,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:05:24,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:05:24,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:05:24,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:05:24,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:05:24,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:05:24,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:05:24,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:05:24,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:05:24,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:05:24,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:05:24,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:05:24,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:05:24,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:05:24,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:24,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:05:24,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:05:24,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:05:24,661 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:05:24,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:05:24,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:05:24,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:05:24,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:05:24,662 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_0924c861-73da-40c6-ae31-09dd26b9ddd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcedd10b8fa79fdd7f584d24ebbda0efe903404a [2020-11-30 02:05:24,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:05:25,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:05:25,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:05:25,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:05:25,038 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:05:25,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2020-11-30 02:05:25,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/cc1f100cc/d2c89213f0c34807bff5848eaf59f4de/FLAG54b483492 [2020-11-30 02:05:25,632 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:05:25,633 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/sv-benchmarks/c/floats-cbmc-regression/float20.i [2020-11-30 02:05:25,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/cc1f100cc/d2c89213f0c34807bff5848eaf59f4de/FLAG54b483492 [2020-11-30 02:05:26,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/data/cc1f100cc/d2c89213f0c34807bff5848eaf59f4de [2020-11-30 02:05:26,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:05:26,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:05:26,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:26,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:05:26,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:05:26,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cd362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26, skipping insertion in model container [2020-11-30 02:05:26,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:05:26,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:05:26,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:26,271 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:05:26,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:26,361 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:05:26,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26 WrapperNode [2020-11-30 02:05:26,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:26,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:26,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:05:26,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:05:26,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:26,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:05:26,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:05:26,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:05:26,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... [2020-11-30 02:05:26,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:05:26,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:05:26,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:05:26,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:05:26,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 [2020-11-30 02:05:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:05:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:05:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:05:26,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:05:28,920 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:05:28,920 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:05:28,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:28 BoogieIcfgContainer [2020-11-30 02:05:28,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:05:28,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:05:28,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:05:28,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:05:28,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:05:26" (1/3) ... [2020-11-30 02:05:28,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960e76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:28, skipping insertion in model container [2020-11-30 02:05:28,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:26" (2/3) ... [2020-11-30 02:05:28,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960e76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:28, skipping insertion in model container [2020-11-30 02:05:28,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:28" (3/3) ... [2020-11-30 02:05:28,930 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2020-11-30 02:05:28,941 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:05:28,947 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 02:05:28,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 02:05:28,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:05:28,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:05:28,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:05:28,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:05:28,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:05:28,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:05:28,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:05:28,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:05:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 02:05:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:05:28,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:28,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:28,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1804966438, now seen corresponding path program 1 times [2020-11-30 02:05:29,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:29,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542205692] [2020-11-30 02:05:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 [2020-11-30 02:05:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:05:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:29,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:29,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542205692] [2020-11-30 02:05:29,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:29,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:05:29,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499944595] [2020-11-30 02:05:29,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:05:29,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:29,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:05:29,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:05:29,183 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 02:05:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:29,214 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-11-30 02:05:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:05:29,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 02:05:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:29,223 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:05:29,223 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 02:05:29,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:05:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 02:05:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 02:05:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 02:05:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-30 02:05:29,256 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 7 [2020-11-30 02:05:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:29,256 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-30 02:05:29,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:05:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-30 02:05:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:05:29,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:29,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:29,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:05:29,466 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1806813480, now seen corresponding path program 1 times [2020-11-30 02:05:29,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:29,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146493900] [2020-11-30 02:05:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 [2020-11-30 02:05:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:29,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:05:29,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:29,989 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 02:05:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:30,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:30,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146493900] [2020-11-30 02:05:30,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:30,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 02:05:30,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296278556] [2020-11-30 02:05:30,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:05:30,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:30,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:05:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:05:30,937 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 8 states. [2020-11-30 02:05:31,521 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 02:05:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:34,430 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-30 02:05:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:05:34,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 02:05:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:34,434 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:05:34,434 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:05:34,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:05:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:05:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 02:05:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:05:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-11-30 02:05:34,439 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 7 [2020-11-30 02:05:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:34,439 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-11-30 02:05:34,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:05:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-11-30 02:05:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:05:34,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:34,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:34,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:05:34,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:34,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1814045541, now seen corresponding path program 1 times [2020-11-30 02:05:34,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:34,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499020441] [2020-11-30 02:05:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/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 [2020-11-30 02:05:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:34,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:05:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:40,313 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-30 02:05:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:40,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:51,154 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 02:06:00,339 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 02:06:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:00,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499020441] [2020-11-30 02:06:00,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:00,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 02:06:00,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243794077] [2020-11-30 02:06:00,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:06:00,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:06:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:06:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=34, Unknown=2, NotChecked=0, Total=56 [2020-11-30 02:06:00,360 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 8 states. [2020-11-30 02:06:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:22,041 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-30 02:06:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:06:22,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-30 02:06:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:22,097 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:06:22,097 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:06:22,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=20, Invalid=34, Unknown=2, NotChecked=0, Total=56 [2020-11-30 02:06:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:06:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:06:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:06:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-30 02:06:22,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-11-30 02:06:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:22,102 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-30 02:06:22,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:06:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-30 02:06:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:06:22,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:22,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:22,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:06:22,310 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash 120341646, now seen corresponding path program 1 times [2020-11-30 02:06:22,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:06:22,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923728000] [2020-11-30 02:06:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:06:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:22,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:06:22,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:23,084 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 02:06:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:23,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:24,056 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-30 02:06:24,939 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-30 02:06:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:24,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923728000] [2020-11-30 02:06:24,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 02:06:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678821121] [2020-11-30 02:06:24,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:06:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:06:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:06:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:06:24,980 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 8 states. [2020-11-30 02:06:29,027 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 02:06:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:29,028 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-30 02:06:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:06:29,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 02:06:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:29,029 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:06:29,029 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:06:29,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:06:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:06:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:06:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:06:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:06:29,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 02:06:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:29,030 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:06:29,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:06:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:06:29,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:06:29,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:06:29,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:06:29,522 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 02:06:32,400 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-30 02:06:32,403 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-30 02:06:32,403 INFO L274 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-11-30 02:06:32,403 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,403 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-30 02:06:32,403 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:06:32,403 INFO L270 CegarLoopResult]: At program point L32-2(lines 26 35) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_bugBrokenOut_~min (_ FloatingPoint 8 24))) (and (= ULTIMATE.start_bugBrokenOut_~ulpdiff~1 ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)))))))) (fp.eq ULTIMATE.start_bugBrokenOut_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0)))))) [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L277 CegarLoopResult]: At program point L57(lines 47 58) the Hoare annotation is: true [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L270 CegarLoopResult]: At program point L21-2(lines 16 24) the Hoare annotation is: (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_bug_~min (_ FloatingPoint 8 24))) (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= ULTIMATE.start_bug_~ulpdiff~0 (fp.mul currentRoundingMode ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) currentRoundingMode (_ bv2 32))))))))) [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,404 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L277 CegarLoopResult]: At program point L42-2(lines 37 45) the Hoare annotation is: true [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-8(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-10(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,405 INFO L274 CegarLoopResult]: For program point L13-11(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,406 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-11-30 02:06:32,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,419 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,422 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,422 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,426 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,426 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,426 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,429 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,430 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,430 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,434 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,434 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,434 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:06:32 BoogieIcfgContainer [2020-11-30 02:06:32,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:06:32,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:06:32,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:06:32,437 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:06:32,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:28" (3/4) ... [2020-11-30 02:06:32,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:06:32,450 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:06:32,451 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:06:32,451 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:06:32,451 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:06:32,476 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32))))) [2020-11-30 02:06:32,476 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start_bugBrokenOut_~min : C_FLOAT :: ulpdiff == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_bugBrokenOut_~min), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && ~fp.eq~DOUBLE(ULTIMATE.start_bugBrokenOut_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456))) [2020-11-30 02:06:32,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0924c861-73da-40c6-ae31-09dd26b9ddd9/bin/utaipan/witness.graphml [2020-11-30 02:06:32,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:06:32,496 INFO L168 Benchmark]: Toolchain (without parser) took 66457.06 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 35.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,496 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:32,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.97 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 36.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 35.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,498 INFO L168 Benchmark]: Boogie Preprocessor took 26.57 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 33.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:32,499 INFO L168 Benchmark]: RCFGBuilder took 2495.64 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 50.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,499 INFO L168 Benchmark]: TraceAbstraction took 63511.86 ms. Allocated memory is still 71.3 MB. Free memory was 49.8 MB in the beginning and 37.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,500 INFO L168 Benchmark]: Witness Printer took 58.38 ms. Allocated memory is still 71.3 MB. Free memory was 37.9 MB in the beginning and 35.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:32,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.97 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 36.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 35.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.57 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 33.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2495.64 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 50.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 63511.86 ms. Allocated memory is still 71.3 MB. Free memory was 49.8 MB in the beginning and 37.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 58.38 ms. Allocated memory is still 71.3 MB. Free memory was 37.9 MB in the beginning and 35.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2020-11-30 02:06:32,527 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,528 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,528 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,529 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,529 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,529 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,534 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,535 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,535 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,536 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2020-11-30 02:06:32,536 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,536 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32))))) - InvariantResult [Line: 26]: Loop Invariant [2020-11-30 02:06:32,538 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,539 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,539 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,542 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:06:32,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bugBrokenOut_~min,QUANTIFIED] [2020-11-30 02:06:32,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:06:32,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start_bugBrokenOut_~min : C_FLOAT :: ulpdiff == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_bugBrokenOut_~min), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32)))))) && ~fp.eq~DOUBLE(ULTIMATE.start_bugBrokenOut_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456))) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 60.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 26 SDslu, 29 SDs, 0 SdLazy, 95 SolverSat, 0 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 27.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 29.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 65 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 21 QuantifiedInterpolants, 6638 SizeOfPredicates, 15 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...