./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c .............................................................................................................................................................................................................................................................................................. 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_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c .............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:27:09,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:27:09,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:27:09,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:27:09,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:27:09,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:27:09,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:27:09,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:27:09,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:27:09,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:27:09,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:27:09,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:27:09,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:27:09,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:27:09,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:27:09,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:27:09,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:27:09,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:27:09,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:27:09,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:27:09,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:27:09,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:27:09,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:27:09,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:27:09,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:27:09,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:27:09,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:27:09,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:27:09,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:27:09,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:27:09,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:27:09,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:27:09,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:27:09,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:27:09,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:27:09,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:27:09,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:27:09,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:27:09,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:27:09,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:27:09,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:27:09,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:27:09,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:27:09,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:27:09,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:27:09,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:27:09,443 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:27:09,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:27:09,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:27:09,444 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:27:09,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:27:09,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:27:09,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:27:09,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:27:09,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:27:09,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:27:09,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:27:09,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:27:09,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:27:09,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:27:09,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:27:09,447 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_6cbadecc-6178-4a20-bee0-af01d36632be/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 -> 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c [2019-12-07 19:27:09,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:27:09,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:27:09,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:27:09,556 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:27:09,556 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:27:09,556 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-12-07 19:27:09,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ec1956b8/cf32d01e289c48dbb2d1c36499b7ba8a/FLAG74704d9a2 [2019-12-07 19:27:10,024 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:27:10,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-12-07 19:27:10,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ec1956b8/cf32d01e289c48dbb2d1c36499b7ba8a/FLAG74704d9a2 [2019-12-07 19:27:10,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ec1956b8/cf32d01e289c48dbb2d1c36499b7ba8a [2019-12-07 19:27:10,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:27:10,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:27:10,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:10,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:27:10,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:27:10,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677cca85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10, skipping insertion in model container [2019-12-07 19:27:10,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:27:10,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:27:10,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:10,205 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:27:10,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:10,235 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:27:10,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10 WrapperNode [2019-12-07 19:27:10,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:10,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:10,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:27:10,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:27:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:10,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:27:10,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:27:10,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:27:10,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... [2019-12-07 19:27:10,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:27:10,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:27:10,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:27:10,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:27:10,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 19:27:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 19:27:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:27:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 19:27:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:27:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:27:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 19:27:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:27:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:27:10,554 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:27:10,554 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 19:27:10,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:10 BoogieIcfgContainer [2019-12-07 19:27:10,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:27:10,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:27:10,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:27:10,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:27:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:27:10" (1/3) ... [2019-12-07 19:27:10,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f487a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:10, skipping insertion in model container [2019-12-07 19:27:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:10" (2/3) ... [2019-12-07 19:27:10,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f487a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:10, skipping insertion in model container [2019-12-07 19:27:10,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:10" (3/3) ... [2019-12-07 19:27:10,561 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2019-12-07 19:27:10,570 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:27:10,575 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:27:10,585 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:27:10,600 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:27:10,600 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:27:10,600 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:27:10,600 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:27:10,600 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:27:10,600 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:27:10,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:27:10,600 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:27:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 19:27:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 19:27:10,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:10,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:10,613 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:10,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1229588358, now seen corresponding path program 1 times [2019-12-07 19:27:10,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:27:10,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843403765] [2019-12-07 19:27:10,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:27:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:10,696 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 19:27:10,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843403765] [2019-12-07 19:27:10,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:10,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:27:10,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908308686] [2019-12-07 19:27:10,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:27:10,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:27:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:27:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:27:10,711 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-12-07 19:27:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:10,726 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2019-12-07 19:27:10,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:27:10,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 19:27:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:10,735 INFO L225 Difference]: With dead ends: 31 [2019-12-07 19:27:10,735 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 19:27:10,737 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 19:27:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 19:27:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 19:27:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 19:27:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-12-07 19:27:10,759 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2019-12-07 19:27:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:10,759 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 19:27:10,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:27:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-07 19:27:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 19:27:10,759 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:10,759 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:10,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1601578325, now seen corresponding path program 1 times [2019-12-07 19:27:10,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:27:10,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661656822] [2019-12-07 19:27:10,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:27:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:27:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:27:10,831 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:27:10,832 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:27:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:27:10 BoogieIcfgContainer [2019-12-07 19:27:10,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:27:10,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:27:10,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:27:10,850 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:27:10,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:10" (3/4) ... [2019-12-07 19:27:10,852 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 19:27:10,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:27:10,854 INFO L168 Benchmark]: Toolchain (without parser) took 814.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.2 MB in the beginning and 1.0 GB in the end (delta: -84.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:10,854 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:27:10,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:10,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.43 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 19:27:10,856 INFO L168 Benchmark]: Boogie Preprocessor took 19.04 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 19:27:10,856 INFO L168 Benchmark]: RCFGBuilder took 273.32 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:10,856 INFO L168 Benchmark]: TraceAbstraction took 293.25 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:10,857 INFO L168 Benchmark]: Witness Printer took 3.10 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 19:27:10,859 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 196.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.43 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 19.04 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 273.32 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 293.25 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.10 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: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L66] float x = 0.0f / 0.0f; [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [huge_ceil=1000000000000000000000000000000] [L68] float res = ceil_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L72] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 19:27:12,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:27:12,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:27:12,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:27:12,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:27:12,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:27:12,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:27:12,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:27:12,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:27:12,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:27:12,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:27:12,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:27:12,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:27:12,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:27:12,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:27:12,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:27:12,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:27:12,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:27:12,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:27:12,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:27:12,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:27:12,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:27:12,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:27:12,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:27:12,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:27:12,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:27:12,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:27:12,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:27:12,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:27:12,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:27:12,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:27:12,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:27:12,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:27:12,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:27:12,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:27:12,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:27:12,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:27:12,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:27:12,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:27:12,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:27:12,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:27:12,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 19:27:12,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:27:12,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:27:12,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:27:12,268 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:27:12,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:27:12,268 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:27:12,268 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:27:12,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:27:12,269 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:27:12,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:27:12,269 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:27:12,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 19:27:12,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:27:12,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:27:12,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:27:12,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:27:12,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:27:12,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:27:12,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:27:12,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:27:12,272 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 19:27:12,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 19:27:12,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:27:12,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:27:12,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:27:12,273 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_6cbadecc-6178-4a20-bee0-af01d36632be/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 -> 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c [2019-12-07 19:27:12,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:27:12,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:27:12,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:27:12,446 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:27:12,447 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:27:12,447 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-12-07 19:27:12,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ced3c397/76ea15e158b84640a4cf3349f550d6bf/FLAG610e00598 [2019-12-07 19:27:12,925 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:27:12,926 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-12-07 19:27:12,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ced3c397/76ea15e158b84640a4cf3349f550d6bf/FLAG610e00598 [2019-12-07 19:27:12,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/data/9ced3c397/76ea15e158b84640a4cf3349f550d6bf [2019-12-07 19:27:12,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:27:12,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:27:12,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:12,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:27:12,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:27:12,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:12" (1/1) ... [2019-12-07 19:27:12,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:12, skipping insertion in model container [2019-12-07 19:27:12,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:27:12" (1/1) ... [2019-12-07 19:27:12,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:27:12,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:27:13,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:13,084 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:27:13,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:27:13,118 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:27:13,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13 WrapperNode [2019-12-07 19:27:13,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:27:13,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:13,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:27:13,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:27:13,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:27:13,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:27:13,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:27:13,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:27:13,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... [2019-12-07 19:27:13,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:27:13,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:27:13,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:27:13,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:27:13,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 19:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 19:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 19:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:27:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 19:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 19:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:27:13,629 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:27:13,629 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 19:27:13,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:13 BoogieIcfgContainer [2019-12-07 19:27:13,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:27:13,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:27:13,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:27:13,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:27:13,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:27:12" (1/3) ... [2019-12-07 19:27:13,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f42d8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:13, skipping insertion in model container [2019-12-07 19:27:13,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:27:13" (2/3) ... [2019-12-07 19:27:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f42d8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:27:13, skipping insertion in model container [2019-12-07 19:27:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:13" (3/3) ... [2019-12-07 19:27:13,635 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2019-12-07 19:27:13,641 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:27:13,646 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:27:13,653 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:27:13,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:27:13,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:27:13,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:27:13,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:27:13,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:27:13,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:27:13,668 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:27:13,668 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:27:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-12-07 19:27:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:27:13,682 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:13,683 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:13,683 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2019-12-07 19:27:13,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:27:13,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311055034] [2019-12-07 19:27:13,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 19:27:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:13,767 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 19:27:13,770 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:27:13,778 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 19:27:13,779 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:27:13,781 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 19:27:13,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311055034] [2019-12-07 19:27:13,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:13,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 19:27:13,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879455915] [2019-12-07 19:27:13,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:27:13,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:27:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:27:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:27:13,795 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-12-07 19:27:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:13,807 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2019-12-07 19:27:13,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:27:13,808 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 19:27:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:13,815 INFO L225 Difference]: With dead ends: 50 [2019-12-07 19:27:13,815 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 19:27:13,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 19:27:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 19:27:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 19:27:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 19:27:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-12-07 19:27:13,839 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2019-12-07 19:27:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:13,839 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-12-07 19:27:13,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:27:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-12-07 19:27:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:27:13,840 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:13,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:14,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 19:27:14,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2019-12-07 19:27:14,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:27:14,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495860143] [2019-12-07 19:27:14,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 19:27:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:14,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 19:27:14,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:27:14,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:27:14,220 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 19:27:14,220 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:27:14,276 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 19:27:14,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495860143] [2019-12-07 19:27:14,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:14,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 19:27:14,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514234084] [2019-12-07 19:27:14,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 19:27:14,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:27:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 19:27:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 19:27:14,279 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2019-12-07 19:27:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:14,709 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-12-07 19:27:14,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:27:14,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-12-07 19:27:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:14,710 INFO L225 Difference]: With dead ends: 34 [2019-12-07 19:27:14,710 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 19:27:14,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 19:27:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 19:27:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 19:27:14,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 19:27:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 19:27:14,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-12-07 19:27:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:14,714 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 19:27:14,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 19:27:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 19:27:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 19:27:14,714 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:27:14,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:27:14,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 19:27:14,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:27:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:27:14,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2019-12-07 19:27:14,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:27:14,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900983750] [2019-12-07 19:27:14,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/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 19:27:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:27:15,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 19:27:15,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:27:15,101 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 19:27:15,101 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:27:15,184 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 19:27:15,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900983750] [2019-12-07 19:27:15,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:27:15,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 19:27:15,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235793958] [2019-12-07 19:27:15,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:27:15,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:27:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:27:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:27:15,186 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2019-12-07 19:27:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:27:15,282 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 19:27:15,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:27:15,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 19:27:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:27:15,282 INFO L225 Difference]: With dead ends: 18 [2019-12-07 19:27:15,283 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:27:15,283 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 19:27:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:27:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:27:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:27:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:27:15,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-12-07 19:27:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:27:15,284 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:27:15,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:27:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:27:15,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:27:15,485 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 19:27:15,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:27:15,582 INFO L246 CegarLoopResult]: For program point L23(lines 23 47) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 19:27:15,583 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-12-07 19:27:15,584 INFO L242 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_ceil_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 19:27:15,584 INFO L246 CegarLoopResult]: For program point L24(lines 24 41) no Hoare annotation was computed. [2019-12-07 19:27:15,584 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2019-12-07 19:27:15,584 INFO L242 CegarLoopResult]: At program point L53(lines 13 54) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_ceil_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 19:27:15,584 INFO L246 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2019-12-07 19:27:15,584 INFO L242 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L34(lines 34 35) no Hoare annotation was computed. [2019-12-07 19:27:15,585 INFO L246 CegarLoopResult]: For program point L26(lines 26 30) no Hoare annotation was computed. [2019-12-07 19:27:15,586 INFO L249 CegarLoopResult]: At program point L76(lines 59 77) the Hoare annotation is: true [2019-12-07 19:27:15,586 INFO L246 CegarLoopResult]: For program point L43(lines 43 46) no Hoare annotation was computed. [2019-12-07 19:27:15,586 INFO L246 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2019-12-07 19:27:15,590 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,591 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:27:15 BoogieIcfgContainer [2019-12-07 19:27:15,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:27:15,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:27:15,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:27:15,600 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:27:15,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:27:13" (3/4) ... [2019-12-07 19:27:15,603 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:27:15,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 19:27:15,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 19:27:15,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 19:27:15,629 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 19:27:15,630 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 19:27:15,630 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 19:27:15,646 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6cbadecc-6178-4a20-bee0-af01d36632be/bin/utaipan/witness.graphml [2019-12-07 19:27:15,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:27:15,647 INFO L168 Benchmark]: Toolchain (without parser) took 2702.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 952.4 MB in the beginning and 958.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 107.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:15,648 INFO L168 Benchmark]: CDTParser took 0.17 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 19:27:15,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.82 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 19:27:15,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:15,648 INFO L168 Benchmark]: Boogie Preprocessor took 22.25 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 19:27:15,649 INFO L168 Benchmark]: RCFGBuilder took 434.05 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:15,649 INFO L168 Benchmark]: TraceAbstraction took 1969.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 111.5 MB). Peak memory consumption was 111.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:15,649 INFO L168 Benchmark]: Witness Printer took 45.76 ms. Allocated memory is still 1.1 GB. Free memory was 965.8 MB in the beginning and 958.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:27:15,651 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 172.82 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 54.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.25 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 434.05 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1969.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 111.5 MB). Peak memory consumption was 111.5 MB. Max. memory is 11.5 GB. * Witness Printer took 45.76 ms. Allocated memory is still 1.1 GB. Free memory was 965.8 MB in the beginning and 958.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 13]: Loop Invariant [2019-12-07 19:27:15,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2019-12-07 19:27:15,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 57]: Loop Invariant [2019-12-07 19:27:15,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,657 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 19:27:15,657 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2730 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 20 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...