./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887f0640b1b5afa2d39789f5b16e950cef616033 ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887f0640b1b5afa2d39789f5b16e950cef616033 ............................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:13:30,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:13:30,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:13:30,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:13:30,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:13:30,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:13:30,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:13:30,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:13:30,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:13:30,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:13:30,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:13:30,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:13:30,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:13:30,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:13:30,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:13:30,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:13:30,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:13:30,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:13:30,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:13:30,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:13:30,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:13:30,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:13:30,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:13:30,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:13:30,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:13:30,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:13:30,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:13:30,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:13:30,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:13:30,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:13:30,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:13:30,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:13:30,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:13:30,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:13:30,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:13:30,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:13:30,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:13:30,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:13:30,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:13:30,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:13:30,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:13:30,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:13:30,465 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:13:30,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:13:30,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:13:30,466 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:13:30,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:13:30,466 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:13:30,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:13:30,467 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:13:30,467 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:13:30,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:13:30,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:13:30,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:13:30,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:13:30,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:13:30,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:13:30,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:13:30,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:13:30,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:13:30,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:13:30,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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(__VERIFIER_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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-12-07 15:13:30,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:13:30,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:13:30,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:13:30,579 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:13:30,579 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:13:30,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-12-07 15:13:30,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/f703b2a42/919c3d1daac6442a94f334988bf36842/FLAGd2dcaa8e4 [2019-12-07 15:13:31,041 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:13:31,041 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-12-07 15:13:31,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/f703b2a42/919c3d1daac6442a94f334988bf36842/FLAGd2dcaa8e4 [2019-12-07 15:13:31,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/f703b2a42/919c3d1daac6442a94f334988bf36842 [2019-12-07 15:13:31,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:13:31,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:13:31,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:13:31,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:13:31,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:13:31,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d86038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31, skipping insertion in model container [2019-12-07 15:13:31,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:13:31,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:13:31,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:13:31,233 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:13:31,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:13:31,264 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:13:31,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31 WrapperNode [2019-12-07 15:13:31,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:13:31,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:13:31,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:13:31,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:13:31,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:13:31,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:13:31,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:13:31,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:13:31,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... [2019-12-07 15:13:31,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:13:31,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:13:31,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:13:31,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:13:31,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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 [2019-12-07 15:13:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:13:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 15:13:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:13:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:13:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:13:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:13:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:13:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:13:31,507 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:13:31,507 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 15:13:31,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:31 BoogieIcfgContainer [2019-12-07 15:13:31,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:13:31,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:13:31,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:13:31,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:13:31,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:13:31" (1/3) ... [2019-12-07 15:13:31,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35dbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:13:31, skipping insertion in model container [2019-12-07 15:13:31,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:31" (2/3) ... [2019-12-07 15:13:31,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35dbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:13:31, skipping insertion in model container [2019-12-07 15:13:31,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:31" (3/3) ... [2019-12-07 15:13:31,512 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-12-07 15:13:31,518 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:13:31,522 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:13:31,530 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:13:31,544 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:13:31,544 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:13:31,545 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:13:31,545 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:13:31,545 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:13:31,545 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:13:31,545 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:13:31,545 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:13:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 15:13:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:13:31,559 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:13:31,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:13:31,560 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:13:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:13:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash -445335142, now seen corresponding path program 1 times [2019-12-07 15:13:31,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:13:31,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598659591] [2019-12-07 15:13:31,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:13:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:13:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:31,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598659591] [2019-12-07 15:13:31,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:13:31,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:13:31,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947046311] [2019-12-07 15:13:31,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:13:31,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:13:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:13:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:13:31,653 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2019-12-07 15:13:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:13:31,664 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2019-12-07 15:13:31,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:13:31,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 15:13:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:13:31,670 INFO L225 Difference]: With dead ends: 29 [2019-12-07 15:13:31,670 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 15:13:31,672 INFO L630 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 [2019-12-07 15:13:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 15:13:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 15:13:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:13:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 15:13:31,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-12-07 15:13:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:13:31,693 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 15:13:31,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:13:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 15:13:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:13:31,693 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:13:31,694 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:13:31,694 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:13:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:13:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1390385303, now seen corresponding path program 1 times [2019-12-07 15:13:31,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:13:31,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32585663] [2019-12-07 15:13:31,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:13:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:13:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:13:31,741 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:13:31,741 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:13:31,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:13:31 BoogieIcfgContainer [2019-12-07 15:13:31,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:13:31,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:13:31,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:13:31,758 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:13:31,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:31" (3/4) ... [2019-12-07 15:13:31,760 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:13:31,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:13:31,762 INFO L168 Benchmark]: Toolchain (without parser) took 705.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -90.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:31,762 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:31,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:31,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:31,763 INFO L168 Benchmark]: Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:31,764 INFO L168 Benchmark]: RCFGBuilder took 193.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:31,764 INFO L168 Benchmark]: TraceAbstraction took 248.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:31,764 INFO L168 Benchmark]: Witness Printer took 2.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:31,767 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 193.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 248.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; [L13] __uint32_t ix; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 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=15occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.25-f470102 [2019-12-07 15:13:33,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:13:33,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:13:33,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:13:33,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:13:33,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:13:33,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:13:33,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:13:33,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:13:33,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:13:33,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:13:33,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:13:33,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:13:33,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:13:33,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:13:33,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:13:33,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:13:33,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:13:33,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:13:33,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:13:33,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:13:33,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:13:33,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:13:33,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:13:33,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:13:33,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:13:33,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:13:33,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:13:33,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:13:33,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:13:33,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:13:33,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:13:33,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:13:33,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:13:33,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:13:33,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:13:33,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:13:33,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:13:33,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:13:33,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:13:33,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:13:33,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 15:13:33,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:13:33,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:13:33,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:13:33,164 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:13:33,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:13:33,164 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:13:33,164 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:13:33,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:13:33,165 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:13:33,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:13:33,165 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:13:33,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:13:33,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:13:33,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:13:33,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:13:33,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:13:33,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:13:33,168 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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(__VERIFIER_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 -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-12-07 15:13:33,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:13:33,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:13:33,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:13:33,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:13:33,349 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:13:33,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-12-07 15:13:33,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/3a6b2c7de/e5791991cb7d4de99e2df44e3dc23f72/FLAG34366c2c6 [2019-12-07 15:13:33,778 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:13:33,778 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-12-07 15:13:33,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/3a6b2c7de/e5791991cb7d4de99e2df44e3dc23f72/FLAG34366c2c6 [2019-12-07 15:13:34,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/data/3a6b2c7de/e5791991cb7d4de99e2df44e3dc23f72 [2019-12-07 15:13:34,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:13:34,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:13:34,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:13:34,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:13:34,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:13:34,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e547a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34, skipping insertion in model container [2019-12-07 15:13:34,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:13:34,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:13:34,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:13:34,295 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:13:34,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:13:34,325 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:13:34,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34 WrapperNode [2019-12-07 15:13:34,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:13:34,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:13:34,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:13:34,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:13:34,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:13:34,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:13:34,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:13:34,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:13:34,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... [2019-12-07 15:13:34,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:13:34,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:13:34,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:13:34,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:13:34,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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 [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:13:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 15:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:13:34,596 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:13:34,597 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 15:13:34,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:34 BoogieIcfgContainer [2019-12-07 15:13:34,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:13:34,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:13:34,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:13:34,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:13:34,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:13:34" (1/3) ... [2019-12-07 15:13:34,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39308a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:13:34, skipping insertion in model container [2019-12-07 15:13:34,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:13:34" (2/3) ... [2019-12-07 15:13:34,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39308a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:13:34, skipping insertion in model container [2019-12-07 15:13:34,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:34" (3/3) ... [2019-12-07 15:13:34,603 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-12-07 15:13:34,609 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:13:34,613 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:13:34,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:13:34,633 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:13:34,634 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:13:34,634 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:13:34,634 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:13:34,634 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:13:34,634 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:13:34,634 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:13:34,634 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:13:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 15:13:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:13:34,647 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:13:34,647 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:13:34,648 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:13:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:13:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2019-12-07 15:13:34,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:13:34,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413716624] [2019-12-07 15:13:34,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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 [2019-12-07 15:13:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:13:34,703 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:13:34,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:13:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:34,715 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:13:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:34,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413716624] [2019-12-07 15:13:34,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:13:34,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:13:34,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560670543] [2019-12-07 15:13:34,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:13:34,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:13:34,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:13:34,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:13:34,732 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-12-07 15:13:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:13:34,743 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-12-07 15:13:34,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:13:34,744 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-07 15:13:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:13:34,750 INFO L225 Difference]: With dead ends: 36 [2019-12-07 15:13:34,750 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:13:34,752 INFO L630 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 [2019-12-07 15:13:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:13:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:13:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:13:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 15:13:34,773 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-12-07 15:13:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:13:34,773 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 15:13:34,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:13:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 15:13:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:13:34,774 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:13:34,774 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:13:34,975 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:13:34,976 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:13:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:13:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2019-12-07 15:13:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:13:34,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24163519] [2019-12-07 15:13:34,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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 [2019-12-07 15:13:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:13:35,060 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:13:35,062 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:13:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:35,130 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:13:35,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:13:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:35,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24163519] [2019-12-07 15:13:35,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:13:35,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 15:13:35,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42819547] [2019-12-07 15:13:35,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:13:35,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:13:35,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:13:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:13:35,186 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-12-07 15:13:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:13:35,255 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-12-07 15:13:35,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:13:35,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-12-07 15:13:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:13:35,256 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:13:35,256 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:13:35,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:13:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:13:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:13:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:13:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-12-07 15:13:35,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2019-12-07 15:13:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:13:35,259 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-12-07 15:13:35,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:13:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-12-07 15:13:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:13:35,260 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:13:35,260 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:13:35,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:13:35,460 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:13:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:13:35,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2019-12-07 15:13:35,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:13:35,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231023781] [2019-12-07 15:13:35,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/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 [2019-12-07 15:13:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:13:35,553 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 15:13:35,556 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:13:35,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:13:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:35,640 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:13:35,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:13:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:13:35,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231023781] [2019-12-07 15:13:35,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:13:35,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2019-12-07 15:13:35,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850280548] [2019-12-07 15:13:35,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 15:13:35,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:13:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 15:13:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-12-07 15:13:35,887 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2019-12-07 15:13:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:13:36,099 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-12-07 15:13:36,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:13:36,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2019-12-07 15:13:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:13:36,100 INFO L225 Difference]: With dead ends: 16 [2019-12-07 15:13:36,100 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:13:36,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2019-12-07 15:13:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:13:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:13:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:13:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:13:36,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-12-07 15:13:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:13:36,101 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:13:36,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 15:13:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:13:36,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:13:36,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:13:36,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:13:36,393 INFO L246 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-12-07 15:13:36,393 INFO L246 CegarLoopResult]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2019-12-07 15:13:36,393 INFO L246 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L242 CegarLoopResult]: At program point L36(lines 27 37) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L242 CegarLoopResult]: At program point L24(lines 12 25) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2019-12-07 15:13:36,394 INFO L246 CegarLoopResult]: For program point L49-2(lines 49 52) no Hoare annotation was computed. [2019-12-07 15:13:36,395 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:13:36,395 INFO L249 CegarLoopResult]: At program point L54(lines 39 55) the Hoare annotation is: true [2019-12-07 15:13:36,395 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-12-07 15:13:36,395 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-12-07 15:13:36,395 INFO L242 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-12-07 15:13:36,395 INFO L246 CegarLoopResult]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2019-12-07 15:13:36,395 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-12-07 15:13:36,396 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2019-12-07 15:13:36,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:13:36 BoogieIcfgContainer [2019-12-07 15:13:36,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:13:36,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:13:36,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:13:36,410 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:13:36,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:13:34" (3/4) ... [2019-12-07 15:13:36,413 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:13:36,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 15:13:36,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:13:36,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:13:36,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aa370519-3109-4b4c-b52a-0d4ec30ef4af/bin/utaipan/witness.graphml [2019-12-07 15:13:36,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:13:36,452 INFO L168 Benchmark]: Toolchain (without parser) took 2290.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 952.4 MB in the beginning and 927.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,452 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:36,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,453 INFO L168 Benchmark]: Boogie Preprocessor took 20.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:13:36,454 INFO L168 Benchmark]: RCFGBuilder took 196.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,454 INFO L168 Benchmark]: TraceAbstraction took 1811.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 934.2 MB in the end (delta: 142.2 MB). Peak memory consumption was 142.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,455 INFO L168 Benchmark]: Witness Printer took 39.96 ms. Allocated memory is still 1.1 GB. Free memory was 934.2 MB in the beginning and 927.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:13:36,458 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.50 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1811.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 934.2 MB in the end (delta: 142.2 MB). Peak memory consumption was 142.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.96 ms. Allocated memory is still 1.1 GB. Free memory was 934.2 MB in the beginning and 927.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 94 SDslu, 42 SDs, 0 SdLazy, 58 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 78 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 8 QuantifiedInterpolants, 4540 SizeOfPredicates, 22 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...