./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887f0640b1b5afa2d39789f5b16e950cef616033 ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887f0640b1b5afa2d39789f5b16e950cef616033 .............................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:24:46,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:24:46,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:24:46,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:24:46,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:24:46,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:24:46,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:24:46,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:24:46,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:24:46,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:24:46,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:24:46,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:24:46,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:24:46,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:24:46,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:24:46,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:24:46,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:24:46,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:24:46,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:24:46,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:24:46,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:24:46,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:24:46,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:24:46,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:24:46,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:24:46,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:24:46,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:24:46,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:24:46,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:24:46,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:24:46,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:24:46,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:24:46,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:24:46,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:24:46,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:24:46,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:24:46,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:24:46,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:24:46,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:24:46,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:24:46,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:24:46,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:24:46,128 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:24:46,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:24:46,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:24:46,129 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:24:46,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:24:46,130 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:24:46,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:24:46,130 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:24:46,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:24:46,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:24:46,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:24:46,131 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:24:46,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:24:46,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:24:46,131 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:24:46,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:24:46,132 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:24:46,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:24:46,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:24:46,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:24:46,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:24:46,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:24:46,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:24:46,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:24:46,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:24:46,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:24:46,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:24:46,136 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_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-11-26 02:24:46,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:24:46,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:24:46,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:24:46,324 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:24:46,325 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:24:46,325 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-26 02:24:46,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/46a3e50f6/72512e4ffcc2441a8d123df2401b059f/FLAG1f9ca9be7 [2019-11-26 02:24:46,728 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:24:46,729 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-26 02:24:46,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/46a3e50f6/72512e4ffcc2441a8d123df2401b059f/FLAG1f9ca9be7 [2019-11-26 02:24:47,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/46a3e50f6/72512e4ffcc2441a8d123df2401b059f [2019-11-26 02:24:47,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:24:47,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:24:47,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:24:47,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:24:47,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:24:47,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52cdc433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47, skipping insertion in model container [2019-11-26 02:24:47,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:24:47,145 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:24:47,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:24:47,293 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:24:47,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:24:47,391 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:24:47,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47 WrapperNode [2019-11-26 02:24:47,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:24:47,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:24:47,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:24:47,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:24:47,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:24:47,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:24:47,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:24:47,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:24:47,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... [2019-11-26 02:24:47,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:24:47,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:24:47,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:24:47,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:24:47,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/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 [2019-11-26 02:24:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:24:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:24:47,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:24:47,860 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:24:47,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:47 BoogieIcfgContainer [2019-11-26 02:24:47,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:24:47,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:24:47,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:24:47,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:24:47,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:24:47" (1/3) ... [2019-11-26 02:24:47,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45688730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:24:47, skipping insertion in model container [2019-11-26 02:24:47,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:47" (2/3) ... [2019-11-26 02:24:47,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45688730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:24:47, skipping insertion in model container [2019-11-26 02:24:47,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:47" (3/3) ... [2019-11-26 02:24:47,886 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-11-26 02:24:47,894 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:24:47,901 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:24:47,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:24:47,935 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:24:47,935 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:24:47,935 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:24:47,935 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:24:47,936 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:24:47,936 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:24:47,936 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:24:47,936 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:24:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-26 02:24:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:24:47,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:24:47,959 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:24:47,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:24:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:24:47,965 INFO L82 PathProgramCache]: Analyzing trace with hash -445335142, now seen corresponding path program 1 times [2019-11-26 02:24:47,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:24:47,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356082204] [2019-11-26 02:24:47,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:24:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:24:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:48,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356082204] [2019-11-26 02:24:48,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:24:48,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:24:48,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418899390] [2019-11-26 02:24:48,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:24:48,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:24:48,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:24:48,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:24:48,089 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2019-11-26 02:24:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:24:48,102 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2019-11-26 02:24:48,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:24:48,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:24:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:24:48,110 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:24:48,110 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:24:48,113 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 [2019-11-26 02:24:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:24:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:24:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:24:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:24:48,142 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-11-26 02:24:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:24:48,142 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:24:48,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:24:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:24:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:24:48,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:24:48,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:24:48,144 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:24:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:24:48,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1390385303, now seen corresponding path program 1 times [2019-11-26 02:24:48,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:24:48,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342636454] [2019-11-26 02:24:48,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:24:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:24:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:24:48,213 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:24:48,213 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:24:48,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:24:48 BoogieIcfgContainer [2019-11-26 02:24:48,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:24:48,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:24:48,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:24:48,233 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:24:48,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:47" (3/4) ... [2019-11-26 02:24:48,236 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:24:48,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:24:48,238 INFO L168 Benchmark]: Toolchain (without parser) took 1127.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:48,238 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:48,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -239.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:48,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:48,241 INFO L168 Benchmark]: Boogie Preprocessor took 40.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:48,241 INFO L168 Benchmark]: RCFGBuilder took 391.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:48,242 INFO L168 Benchmark]: TraceAbstraction took 370.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:48,242 INFO L168 Benchmark]: Witness Printer took 3.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:48,246 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -239.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 391.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 370.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; [L13] __uint32_t ix; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:24:50,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:24:50,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:24:50,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:24:50,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:24:50,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:24:50,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:24:50,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:24:50,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:24:50,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:24:50,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:24:50,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:24:50,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:24:50,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:24:50,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:24:50,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:24:50,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:24:50,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:24:50,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:24:50,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:24:50,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:24:50,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:24:50,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:24:50,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:24:50,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:24:50,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:24:50,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:24:50,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:24:50,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:24:50,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:24:50,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:24:50,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:24:50,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:24:50,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:24:50,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:24:50,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:24:50,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:24:50,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:24:50,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:24:50,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:24:50,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:24:50,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:24:50,141 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:24:50,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:24:50,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:24:50,151 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:24:50,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:24:50,151 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:24:50,151 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:24:50,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:24:50,152 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:24:50,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:24:50,153 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:24:50,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:24:50,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:24:50,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:24:50,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:24:50,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:24:50,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:24:50,154 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:24:50,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:24:50,155 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:24:50,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:24:50,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:24:50,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:24:50,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:24:50,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:24:50,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:24:50,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:24:50,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:24:50,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:24:50,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:24:50,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:24:50,158 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:24:50,158 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:24:50,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:24:50,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:24:50,159 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_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 887f0640b1b5afa2d39789f5b16e950cef616033 [2019-11-26 02:24:50,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:24:50,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:24:50,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:24:50,459 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:24:50,459 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:24:50,460 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-26 02:24:50,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/1d2212dbf/1d405a3bb7694019bda8f0a0074d6fc3/FLAG752f3f90d [2019-11-26 02:24:50,900 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:24:50,900 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2019-11-26 02:24:50,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/1d2212dbf/1d405a3bb7694019bda8f0a0074d6fc3/FLAG752f3f90d [2019-11-26 02:24:51,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/data/1d2212dbf/1d405a3bb7694019bda8f0a0074d6fc3 [2019-11-26 02:24:51,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:24:51,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:24:51,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:24:51,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:24:51,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:24:51,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea1176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51, skipping insertion in model container [2019-11-26 02:24:51,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:24:51,385 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:24:51,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:24:51,557 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:24:51,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:24:51,615 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:24:51,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51 WrapperNode [2019-11-26 02:24:51,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:24:51,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:24:51,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:24:51,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:24:51,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:24:51,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:24:51,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:24:51,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:24:51,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... [2019-11-26 02:24:51,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:24:51,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:24:51,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:24:51,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:24:51,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/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 [2019-11-26 02:24:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:24:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 02:24:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:24:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:24:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:24:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:24:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:24:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:24:52,064 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:24:52,065 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:24:52,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:52 BoogieIcfgContainer [2019-11-26 02:24:52,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:24:52,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:24:52,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:24:52,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:24:52,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:24:51" (1/3) ... [2019-11-26 02:24:52,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6d3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:24:52, skipping insertion in model container [2019-11-26 02:24:52,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:24:51" (2/3) ... [2019-11-26 02:24:52,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6d3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:24:52, skipping insertion in model container [2019-11-26 02:24:52,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:52" (3/3) ... [2019-11-26 02:24:52,071 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-11-26 02:24:52,080 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:24:52,097 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:24:52,115 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:24:52,155 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:24:52,155 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:24:52,156 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:24:52,156 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:24:52,156 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:24:52,156 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:24:52,156 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:24:52,157 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:24:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-26 02:24:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:24:52,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:24:52,179 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:24:52,179 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:24:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:24:52,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2019-11-26 02:24:52,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:24:52,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918543480] [2019-11-26 02:24:52,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/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 [2019-11-26 02:24:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:24:52,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:24:52,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:24:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:52,269 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:24:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:52,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918543480] [2019-11-26 02:24:52,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:24:52,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:24:52,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162182457] [2019-11-26 02:24:52,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:24:52,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:24:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:24:52,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:24:52,288 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-26 02:24:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:24:52,300 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-26 02:24:52,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:24:52,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-26 02:24:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:24:52,308 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:24:52,309 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:24:52,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:24:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:24:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:24:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:24:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-26 02:24:52,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-11-26 02:24:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:24:52,340 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-26 02:24:52,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:24:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-26 02:24:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:24:52,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:24:52,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:24:52,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:24:52,543 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:24:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:24:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2019-11-26 02:24:52,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:24:52,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635823048] [2019-11-26 02:24:52,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/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 [2019-11-26 02:24:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:24:52,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:24:52,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:24:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:52,741 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:24:52,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:24:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:52,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635823048] [2019-11-26 02:24:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:24:52,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:24:52,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978783387] [2019-11-26 02:24:52,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:24:52,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:24:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:24:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:24:52,866 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2019-11-26 02:24:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:24:52,979 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-11-26 02:24:52,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:24:52,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-26 02:24:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:24:52,981 INFO L225 Difference]: With dead ends: 19 [2019-11-26 02:24:52,982 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:24:52,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:24:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:24:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:24:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:24:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-11-26 02:24:52,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2019-11-26 02:24:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:24:52,988 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-11-26 02:24:52,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:24:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-11-26 02:24:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:24:52,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:24:52,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:24:53,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:24:53,191 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:24:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:24:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2019-11-26 02:24:53,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:24:53,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887552974] [2019-11-26 02:24:53,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/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 [2019-11-26 02:24:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:24:53,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-26 02:24:53,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:24:53,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:24:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:53,405 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:24:53,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:24:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:24:53,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887552974] [2019-11-26 02:24:53,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:24:53,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2019-11-26 02:24:53,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215477577] [2019-11-26 02:24:53,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-26 02:24:53,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:24:53,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-26 02:24:53,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:24:53,757 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 17 states. [2019-11-26 02:24:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:24:54,101 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-11-26 02:24:54,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:24:54,101 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2019-11-26 02:24:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:24:54,102 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:24:54,102 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:24:54,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2019-11-26 02:24:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:24:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:24:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:24:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:24:54,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-26 02:24:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:24:54,104 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:24:54,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-26 02:24:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:24:54,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:24:54,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:24:54,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:24:54,431 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-26 02:24:54,431 INFO L444 ceAbstractionStarter]: For program point L19-1(lines 12 25) no Hoare annotation was computed. [2019-11-26 02:24:54,432 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-11-26 02:24:54,432 INFO L440 ceAbstractionStarter]: At program point L36(lines 27 37) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-26 02:24:54,432 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:24:54,432 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:24:54,432 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:24:54,433 INFO L440 ceAbstractionStarter]: At program point L24(lines 12 25) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-26 02:24:54,433 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-11-26 02:24:54,433 INFO L444 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-26 02:24:54,433 INFO L444 ceAbstractionStarter]: For program point L49-2(lines 49 52) no Hoare annotation was computed. [2019-11-26 02:24:54,433 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:24:54,434 INFO L447 ceAbstractionStarter]: At program point L54(lines 39 55) the Hoare annotation is: true [2019-11-26 02:24:54,434 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-26 02:24:54,434 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-11-26 02:24:54,434 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fabs_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0)))) [2019-11-26 02:24:54,434 INFO L444 ceAbstractionStarter]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2019-11-26 02:24:54,434 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-26 02:24:54,435 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2019-11-26 02:24:54,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:24:54 BoogieIcfgContainer [2019-11-26 02:24:54,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:24:54,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:24:54,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:24:54,461 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:24:54,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:24:52" (3/4) ... [2019-11-26 02:24:54,466 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:24:54,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:24:54,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:24:54,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:24:54,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_58341a43-1488-4e90-8d30-c4121873d824/bin/utaipan/witness.graphml [2019-11-26 02:24:54,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:24:54,526 INFO L168 Benchmark]: Toolchain (without parser) took 3171.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 961.8 MB in the beginning and 982.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 136.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,526 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:54,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -202.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,528 INFO L168 Benchmark]: Boogie Preprocessor took 44.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,529 INFO L168 Benchmark]: RCFGBuilder took 289.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,529 INFO L168 Benchmark]: TraceAbstraction took 2393.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.1 MB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:24:54,530 INFO L168 Benchmark]: Witness Printer took 63.41 ms. Allocated memory is still 1.2 GB. Free memory is still 982.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:24:54,532 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 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 114.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -202.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2393.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.1 MB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 11.5 GB. * Witness Printer took 63.41 ms. Allocated memory is still 1.2 GB. Free memory is still 982.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 34 SDtfs, 94 SDslu, 42 SDs, 0 SdLazy, 58 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 78 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 8 QuantifiedInterpolants, 4540 SizeOfPredicates, 22 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...