./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:45,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:45,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:45,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:45,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:45,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:45,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:45,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:45,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:45,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:45,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:45,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:45,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:45,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:45,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:45,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:45,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:45,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:45,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:45,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:45,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:45,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:45,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:45,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:45,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:45,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:45,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:45,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:45,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:45,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:45,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:45,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:45,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:45,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:45,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:45,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:45,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:45,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:45,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:45,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:45,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:45,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:45,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:45,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:45,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:45,530 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:45,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:45,530 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:45,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:45,531 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:45,531 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:45,531 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:45,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:45,531 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:45,532 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:45,532 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:45,532 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:45,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:45,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:45,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:45,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:45,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:45,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:45,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:45,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:45,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:45,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:45,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:45,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:45,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:45,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:45,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:45,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:45,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:45,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:45,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:45,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:45,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:45,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:45,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:45,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:45,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:45,538 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_576f4f8e-e7fd-47ef-8960-e6f755f51990/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-28 07:30:45,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:45,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:45,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:45,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:45,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:45,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-28 07:30:45,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/377ed98b6/4366541f5f314afb8c257c53cd066ae2/FLAGc9b9b6bd4 [2020-11-28 07:30:46,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:46,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-28 07:30:46,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/377ed98b6/4366541f5f314afb8c257c53cd066ae2/FLAGc9b9b6bd4 [2020-11-28 07:30:46,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/377ed98b6/4366541f5f314afb8c257c53cd066ae2 [2020-11-28 07:30:46,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:46,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:46,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:46,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:46,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:46,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:46" (1/1) ... [2020-11-28 07:30:46,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53539348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:46, skipping insertion in model container [2020-11-28 07:30:46,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:46" (1/1) ... [2020-11-28 07:30:46,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:46,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:47,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:47,056 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:47,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:47,106 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:47,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47 WrapperNode [2020-11-28 07:30:47,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:47,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:47,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:47,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:47,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:47,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:47,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:47,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:47,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... [2020-11-28 07:30:47,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:47,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:47,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:47,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:47,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/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 [2020-11-28 07:30:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:30:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:30:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:30:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:47,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:30:47,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:47,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:47,773 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:30:47,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:47 BoogieIcfgContainer [2020-11-28 07:30:47,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:47,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:47,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:47,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:47,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:46" (1/3) ... [2020-11-28 07:30:47,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccff5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:47, skipping insertion in model container [2020-11-28 07:30:47,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:47" (2/3) ... [2020-11-28 07:30:47,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccff5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:47, skipping insertion in model container [2020-11-28 07:30:47,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:47" (3/3) ... [2020-11-28 07:30:47,807 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-28 07:30:47,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:47,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:47,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:47,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:47,863 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:47,863 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:47,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:47,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:47,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:47,864 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:47,864 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 07:30:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:30:47,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:47,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:30:47,883 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2131324155, now seen corresponding path program 1 times [2020-11-28 07:30:47,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:47,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790918036] [2020-11-28 07:30:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:48,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790918036] [2020-11-28 07:30:48,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:48,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:48,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245747138] [2020-11-28 07:30:48,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:48,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:48,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:48,076 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-28 07:30:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:48,096 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-11-28 07:30:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:48,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 07:30:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:48,108 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:30:48,108 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:30:48,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:30:48,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:30:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:30:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-11-28 07:30:48,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-11-28 07:30:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:48,153 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-11-28 07:30:48,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-11-28 07:30:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:30:48,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:48,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:48,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:48,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1451663902, now seen corresponding path program 1 times [2020-11-28 07:30:48,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:48,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033276837] [2020-11-28 07:30:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:48,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:48,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:48,288 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:30:48,289 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:30:48,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:48,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:48 BoogieIcfgContainer [2020-11-28 07:30:48,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:48,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:48,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:48,320 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:48,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:47" (3/4) ... [2020-11-28 07:30:48,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:30:48,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:48,328 INFO L168 Benchmark]: Toolchain (without parser) took 1513.89 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 34.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:48,329 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:48,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.73 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 76.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:48,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.54 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:48,332 INFO L168 Benchmark]: Boogie Preprocessor took 53.52 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:48,333 INFO L168 Benchmark]: RCFGBuilder took 555.18 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 56.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:48,334 INFO L168 Benchmark]: TraceAbstraction took 531.51 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 35.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:48,335 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 98.6 MB. Free memory was 35.0 MB in the beginning and 34.5 MB in the end (delta: 496.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:48,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 33.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.73 ms. Allocated memory is still 98.6 MB. Free memory was 67.0 MB in the beginning and 76.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.54 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.52 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 555.18 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 56.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 531.51 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 35.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 98.6 MB. Free memory was 35.0 MB in the beginning and 34.5 MB in the end (delta: 496.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1010.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:50,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:50,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:51,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:51,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:51,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:51,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:51,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:51,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:51,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:51,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:51,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:51,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:51,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:51,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:51,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:51,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:51,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:51,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:51,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:51,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:51,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:51,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:51,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:51,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:51,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:51,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:51,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:51,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:51,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:51,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:51,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:51,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:51,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:51,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:51,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:51,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:51,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:51,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:51,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:51,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:51,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:30:51,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:51,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:51,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:51,202 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:51,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:51,202 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:51,202 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:51,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:51,203 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:51,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:51,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:51,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:51,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:51,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:51,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:51,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:51,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:51,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:30:51,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:30:51,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:51,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:51,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:51,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:51,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:51,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:30:51,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:51,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:51,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:51,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:51,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:51,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:51,213 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:30:51,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:30:51,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:51,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:51,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:51,215 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_576f4f8e-e7fd-47ef-8960-e6f755f51990/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-28 07:30:51,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:51,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:51,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:51,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:51,755 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:51,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-28 07:30:51,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/f856d9362/cab7cb7fec484a12b4dc0a9dc767cbb8/FLAG6bd49de20 [2020-11-28 07:30:52,435 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:52,436 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-28 07:30:52,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/f856d9362/cab7cb7fec484a12b4dc0a9dc767cbb8/FLAG6bd49de20 [2020-11-28 07:30:52,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/data/f856d9362/cab7cb7fec484a12b4dc0a9dc767cbb8 [2020-11-28 07:30:52,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:52,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:52,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:52,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:52,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:52,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:52" (1/1) ... [2020-11-28 07:30:52,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d71f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:52, skipping insertion in model container [2020-11-28 07:30:52,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:52" (1/1) ... [2020-11-28 07:30:52,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:52,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:53,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:53,095 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:53,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:53,132 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:53,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53 WrapperNode [2020-11-28 07:30:53,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:53,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:53,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:53,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:53,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:53,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:53,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:53,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:53,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... [2020-11-28 07:30:53,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:53,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:53,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:53,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:53,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/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 [2020-11-28 07:30:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:30:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:30:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:30:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:53,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:30:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:30:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:53,652 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:53,652 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:30:53,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:53 BoogieIcfgContainer [2020-11-28 07:30:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:53,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:53,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:53,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:53,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:52" (1/3) ... [2020-11-28 07:30:53,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472d9588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:53, skipping insertion in model container [2020-11-28 07:30:53,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:53" (2/3) ... [2020-11-28 07:30:53,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472d9588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:53, skipping insertion in model container [2020-11-28 07:30:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:53" (3/3) ... [2020-11-28 07:30:53,688 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-28 07:30:53,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:53,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:53,717 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:53,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:53,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:53,757 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:53,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:53,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:53,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:53,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:53,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-28 07:30:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:30:53,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:53,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:53,790 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-11-28 07:30:53,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:30:53,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830769999] [2020-11-28 07:30:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/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 [2020-11-28 07:30:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:53,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:30:53,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:53,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:54,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830769999] [2020-11-28 07:30:54,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:54,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:30:54,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765685842] [2020-11-28 07:30:54,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:54,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:30:54,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:54,036 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-28 07:30:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:54,057 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-28 07:30:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:54,058 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 07:30:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:54,077 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:30:54,082 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:30:54,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:30:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:30:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:30:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-28 07:30:54,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-11-28 07:30:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:54,118 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-28 07:30:54,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-28 07:30:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:30:54,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:54,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:54,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:30:54,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-11-28 07:30:54,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:30:54,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802368207] [2020-11-28 07:30:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/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 [2020-11-28 07:30:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:54,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:30:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:54,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:54,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802368207] [2020-11-28 07:30:54,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:54,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-28 07:30:54,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361104720] [2020-11-28 07:30:54,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:30:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:30:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:30:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:30:54,917 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 12 states. [2020-11-28 07:30:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:55,432 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-11-28 07:30:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:30:55,433 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-28 07:30:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:55,433 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:30:55,433 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:30:55,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:30:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:30:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:30:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:30:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:30:55,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-28 07:30:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:55,436 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:30:55,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:30:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:30:55,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:30:55,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:30:55,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:30:55,771 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:30:55,772 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-28 07:30:55,772 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-28 07:30:55,772 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-28 07:30:55,772 INFO L277 CegarLoopResult]: At program point L46(lines 31 47) the Hoare annotation is: true [2020-11-28 07:30:55,772 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:30:55,773 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:30:55,773 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:30:55,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:30:55,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:30:55,773 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-28 07:30:55,774 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:30:55,774 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-28 07:30:55,774 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2020-11-28 07:30:55,774 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-28 07:30:55,774 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-11-28 07:30:55,791 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:55 BoogieIcfgContainer [2020-11-28 07:30:55,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:55,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:55,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:55,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:55,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:53" (3/4) ... [2020-11-28 07:30:55,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:30:55,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 07:30:55,824 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:30:55,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:30:55,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:30:55,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_576f4f8e-e7fd-47ef-8960-e6f755f51990/bin/utaipan/witness.graphml [2020-11-28 07:30:55,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:55,859 INFO L168 Benchmark]: Toolchain (without parser) took 3003.24 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 26.9 MB in the beginning and 46.4 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:55,860 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:55,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 30.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:55,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.94 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 30.0 MB in the beginning and 51.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:55,862 INFO L168 Benchmark]: Boogie Preprocessor took 56.38 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:55,863 INFO L168 Benchmark]: RCFGBuilder took 411.61 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 51.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:55,864 INFO L168 Benchmark]: TraceAbstraction took 2126.21 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 48.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:55,864 INFO L168 Benchmark]: Witness Printer took 47.48 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:55,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 30.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.94 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 30.0 MB in the beginning and 51.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.38 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 411.61 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 51.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2126.21 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 48.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 47.48 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2020-11-28 07:30:55,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,880 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant [2020-11-28 07:30:55,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:30:55,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 1568 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...