./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.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_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 14218179970cdda4c2f749c75b7f78aa74dcc86b ............................................................................................................................................................................................................................................................................................................... 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_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 14218179970cdda4c2f749c75b7f78aa74dcc86b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:58:23,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:58:23,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:58:23,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:58:23,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:58:23,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:58:23,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:58:23,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:58:23,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:58:23,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:58:23,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:58:23,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:58:23,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:58:23,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:58:23,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:58:23,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:58:23,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:58:23,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:58:23,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:58:23,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:58:23,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:58:23,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:58:23,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:58:23,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:58:23,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:58:23,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:58:23,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:58:23,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:58:23,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:58:23,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:58:23,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:58:23,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:58:23,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:58:23,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:58:23,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:58:23,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:58:23,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:58:23,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:58:23,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:58:23,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:58:23,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:58:23,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:58:23,107 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:58:23,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:58:23,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:58:23,119 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:58:23,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:58:23,119 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:58:23,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:58:23,120 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:58:23,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:58:23,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:58:23,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:58:23,121 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:58:23,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:58:23,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:58:23,122 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:58:23,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:58:23,122 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:58:23,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:58:23,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:58:23,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:58:23,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:58:23,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:58:23,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:58:23,124 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:58:23,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:58:23,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:58:23,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:58:23,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:58:23,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:58:23,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:58:23,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:58:23,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:58:23,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:58:23,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:58:23,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:58:23,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:58:23,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:58:23,129 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_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 -> 14218179970cdda4c2f749c75b7f78aa74dcc86b [2019-11-26 02:58:23,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:58:23,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:58:23,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:58:23,297 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:58:23,298 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:58:23,298 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-26 02:58:23,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/5499ab27d/43abce4c0555432ab28c55c52f402eb7/FLAG179f946c3 [2019-11-26 02:58:23,697 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:58:23,697 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-26 02:58:23,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/5499ab27d/43abce4c0555432ab28c55c52f402eb7/FLAG179f946c3 [2019-11-26 02:58:24,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/5499ab27d/43abce4c0555432ab28c55c52f402eb7 [2019-11-26 02:58:24,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:58:24,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:58:24,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:24,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:58:24,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:58:24,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4bdb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24, skipping insertion in model container [2019-11-26 02:58:24,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:58:24,123 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:58:24,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:24,484 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:58:24,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:24,550 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:58:24,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24 WrapperNode [2019-11-26 02:58:24,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:24,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:24,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:58:24,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:58:24,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:24,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:58:24,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:58:24,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:58:24,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... [2019-11-26 02:58:24,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:58:24,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:58:24,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:58:24,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:58:24,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 02:58:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:58:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:58:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:58:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:58:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:58:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-26 02:58:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:58:25,348 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:58:25,348 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:58:25,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:25 BoogieIcfgContainer [2019-11-26 02:58:25,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:58:25,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:58:25,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:58:25,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:58:25,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:58:24" (1/3) ... [2019-11-26 02:58:25,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d9acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:25, skipping insertion in model container [2019-11-26 02:58:25,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:24" (2/3) ... [2019-11-26 02:58:25,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d9acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:25, skipping insertion in model container [2019-11-26 02:58:25,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:25" (3/3) ... [2019-11-26 02:58:25,357 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2019-11-26 02:58:25,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:58:25,370 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:58:25,378 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:58:25,398 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:58:25,398 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:58:25,398 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:58:25,398 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:58:25,398 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:58:25,399 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:58:25,399 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:58:25,399 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:58:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-26 02:58:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:58:25,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:25,419 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:25,420 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:25,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:25,426 INFO L82 PathProgramCache]: Analyzing trace with hash 938477159, now seen corresponding path program 1 times [2019-11-26 02:58:25,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:25,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174924029] [2019-11-26 02:58:25,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:25,564 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 02:58:25,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174924029] [2019-11-26 02:58:25,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:58:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885436785] [2019-11-26 02:58:25,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:58:25,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:25,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:58:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:58:25,580 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-26 02:58:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:25,602 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2019-11-26 02:58:25,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:58:25,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:58:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:25,613 INFO L225 Difference]: With dead ends: 59 [2019-11-26 02:58:25,614 INFO L226 Difference]: Without dead ends: 28 [2019-11-26 02:58:25,616 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 02:58:25,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-26 02:58:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-26 02:58:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:58:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-26 02:58:25,646 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2019-11-26 02:58:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:25,646 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-26 02:58:25,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:58:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-26 02:58:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:58:25,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:25,647 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:25,647 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1255887612, now seen corresponding path program 1 times [2019-11-26 02:58:25,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:25,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467172009] [2019-11-26 02:58:25,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:58:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:58:25,788 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:58:25,789 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:58:25,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:58:25 BoogieIcfgContainer [2019-11-26 02:58:25,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:58:25,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:58:25,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:58:25,843 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:58:25,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:25" (3/4) ... [2019-11-26 02:58:25,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:58:25,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:58:25,850 INFO L168 Benchmark]: Toolchain (without parser) took 1766.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -121.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:25,851 INFO L168 Benchmark]: CDTParser took 0.25 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 02:58:25,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:25,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:25,854 INFO L168 Benchmark]: Boogie Preprocessor took 76.08 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 02:58:25,855 INFO L168 Benchmark]: RCFGBuilder took 634.19 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:25,856 INFO L168 Benchmark]: TraceAbstraction took 491.40 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:25,856 INFO L168 Benchmark]: Witness Printer took 5.16 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 02:58:25,865 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 468.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 87.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.08 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. * RCFGBuilder took 634.19 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 491.40 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.16 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: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L116] float x = 0.0f / 0.0f; [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={3:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L42] ieee_float_shape_type gf_u; [L43] gf_u.value = (x) [L44] EXPR gf_u.word [L44] (sx) = gf_u.word [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={3:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L49] COND TRUE ((hx) > 0x7f800000L) [L50] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={3:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L117] float res = __ieee754_expf(x); [L13] return x != x; [L120] COND TRUE !isnan_float(res) [L121] __VERIFIER_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={3:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 38 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=30occurred 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 0.1.24-6b5699a [2019-11-26 02:58:27,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:58:27,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:58:27,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-26 02:58:27,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:58:27,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:58:27,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:58:27,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:58:27,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:58:27,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:58:27,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:58:27,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:58:27,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:58:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:58:27,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:58:27,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:58:27,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-26 02:58:27,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:58:27,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:58:27,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:58:27,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:58:27,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:58:27,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:58:27,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:58:27,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:58:27,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:58:27,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:58:27,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:58:28,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:58:28,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:58:28,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:58:28,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:58:28,022 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:58:28,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:58:28,022 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:58:28,023 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:58:28,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:58:28,023 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:58:28,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:58:28,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:58:28,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:58:28,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:58:28,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:58:28,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:58:28,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:58:28,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:58:28,026 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:58:28,026 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:58:28,026 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:58:28,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:58:28,027 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:58:28,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:58:28,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:58:28,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:58:28,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:58:28,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:58:28,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:58:28,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:58:28,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:58:28,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:58:28,029 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:58:28,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:58:28,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:58:28,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:58:28,030 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_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 -> 14218179970cdda4c2f749c75b7f78aa74dcc86b [2019-11-26 02:58:28,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:58:28,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:58:28,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:58:28,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:58:28,335 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:58:28,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-26 02:58:28,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/f800ab32f/131e74333297428c9779117c77fa374c/FLAG59ad3c57c [2019-11-26 02:58:28,813 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:58:28,814 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-26 02:58:28,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/f800ab32f/131e74333297428c9779117c77fa374c/FLAG59ad3c57c [2019-11-26 02:58:29,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/data/f800ab32f/131e74333297428c9779117c77fa374c [2019-11-26 02:58:29,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:58:29,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:58:29,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:29,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:58:29,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:58:29,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1173e0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29, skipping insertion in model container [2019-11-26 02:58:29,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:58:29,253 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:58:29,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:29,475 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:58:29,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:29,602 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:58:29,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29 WrapperNode [2019-11-26 02:58:29,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:29,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:29,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:58:29,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:58:29,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:29,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:58:29,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:58:29,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:58:29,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... [2019-11-26 02:58:29,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:58:29,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:58:29,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:58:29,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:58:29,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 02:58:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-11-26 02:58:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:58:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 02:58:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:58:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:58:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:58:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:58:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:58:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:58:39,280 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:58:39,281 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:58:39,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:39 BoogieIcfgContainer [2019-11-26 02:58:39,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:58:39,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:58:39,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:58:39,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:58:39,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:58:29" (1/3) ... [2019-11-26 02:58:39,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4721bb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:39, skipping insertion in model container [2019-11-26 02:58:39,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:29" (2/3) ... [2019-11-26 02:58:39,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4721bb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:39, skipping insertion in model container [2019-11-26 02:58:39,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:39" (3/3) ... [2019-11-26 02:58:39,288 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2019-11-26 02:58:39,298 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:58:39,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:58:39,317 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:58:39,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:58:39,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:58:39,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:58:39,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:58:39,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:58:39,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:58:39,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:58:39,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:58:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-26 02:58:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:58:39,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:39,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:39,359 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2019-11-26 02:58:39,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:58:39,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118537387] [2019-11-26 02:58:39,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 02:58:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:39,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:58:39,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:39,966 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 02:58:39,966 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:39,970 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 02:58:39,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118537387] [2019-11-26 02:58:39,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:39,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:58:39,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773488803] [2019-11-26 02:58:39,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:58:39,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:58:39,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:58:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:58:39,997 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-11-26 02:58:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:40,020 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-11-26 02:58:40,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:58:40,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-26 02:58:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:40,033 INFO L225 Difference]: With dead ends: 72 [2019-11-26 02:58:40,033 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:58:40,037 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 02:58:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:58:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-26 02:58:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:58:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-11-26 02:58:40,073 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2019-11-26 02:58:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:40,073 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-11-26 02:58:40,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:58:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-11-26 02:58:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:58:40,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:40,074 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:40,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:58:40,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2019-11-26 02:58:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:58:40,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218339880] [2019-11-26 02:58:40,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 02:58:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:40,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:58:40,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:40,918 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 02:58:40,918 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:41,295 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 02:58:41,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218339880] [2019-11-26 02:58:41,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:41,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:58:41,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505385951] [2019-11-26 02:58:41,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:58:41,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:58:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:58:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:58:41,299 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 10 states. [2019-11-26 02:58:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:57,662 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-11-26 02:58:57,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:58:57,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-26 02:58:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:57,663 INFO L225 Difference]: With dead ends: 50 [2019-11-26 02:58:57,663 INFO L226 Difference]: Without dead ends: 42 [2019-11-26 02:58:57,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:58:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-26 02:58:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-11-26 02:58:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:58:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-26 02:58:57,670 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 10 [2019-11-26 02:58:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:57,670 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-26 02:58:57,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:58:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-26 02:58:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:58:57,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:57,671 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:57,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:58:57,885 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 228797714, now seen corresponding path program 1 times [2019-11-26 02:58:57,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:58:57,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350439785] [2019-11-26 02:58:57,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/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 02:58:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:58,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:58:58,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:58,586 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 02:58:58,586 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:58,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350439785] [2019-11-26 02:58:58,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:58,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 10 [2019-11-26 02:58:58,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762660688] [2019-11-26 02:58:58,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:58:58,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:58:58,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:58:58,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:58:58,780 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 10 states. [2019-11-26 02:58:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:58,930 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-11-26 02:58:58,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:58:58,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-26 02:58:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:58,930 INFO L225 Difference]: With dead ends: 34 [2019-11-26 02:58:58,930 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:58:58,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:58:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:58:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:58:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:58:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:58:58,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-26 02:58:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:58,932 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:58:58,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:58:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:58:58,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:58:59,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:58:59,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:58:59,273 INFO L444 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-26 02:58:59,273 INFO L444 ceAbstractionStarter]: For program point L52-2(line 52) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 106) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L102-1(lines 95 108) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L102-2(lines 102 106) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L53(lines 53 54) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L78(lines 78 81) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-11-26 02:58:59,274 INFO L444 ceAbstractionStarter]: For program point L70-2(lines 58 73) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L120(lines 120 123) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L440 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)))) [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L71(lines 71 72) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-11-26 02:58:59,275 INFO L440 ceAbstractionStarter]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-11-26 02:58:59,275 INFO L444 ceAbstractionStarter]: For program point L89(lines 89 93) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L89-1(lines 82 95) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L89-2(lines 89 93) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L82(lines 82 108) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2019-11-26 02:58:59,276 INFO L440 ceAbstractionStarter]: At program point L107(lines 36 109) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)))) [2019-11-26 02:58:59,276 INFO L444 ceAbstractionStarter]: For program point L41-1(lines 41 45) no Hoare annotation was computed. [2019-11-26 02:58:59,277 INFO L440 ceAbstractionStarter]: At program point L41-2(lines 41 45) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-11-26 02:58:59,277 INFO L444 ceAbstractionStarter]: For program point L41-3(lines 41 45) no Hoare annotation was computed. [2019-11-26 02:58:59,277 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:58:59,277 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 73) no Hoare annotation was computed. [2019-11-26 02:58:59,277 INFO L447 ceAbstractionStarter]: At program point L125(lines 111 126) the Hoare annotation is: true [2019-11-26 02:58:59,277 INFO L444 ceAbstractionStarter]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-11-26 02:58:59,277 INFO L444 ceAbstractionStarter]: For program point L59-2(lines 59 68) no Hoare annotation was computed. [2019-11-26 02:58:59,278 INFO L444 ceAbstractionStarter]: For program point L51(lines 51 52) no Hoare annotation was computed. [2019-11-26 02:58:59,278 INFO L444 ceAbstractionStarter]: For program point L84-1(lines 84 88) no Hoare annotation was computed. [2019-11-26 02:58:59,278 INFO L440 ceAbstractionStarter]: At program point L84-2(lines 84 88) the Hoare annotation is: false [2019-11-26 02:58:59,287 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,291 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,291 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,292 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,292 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,292 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,293 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,294 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,294 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,294 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,295 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,295 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,295 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,295 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,297 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,297 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,297 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,297 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:58:59 BoogieIcfgContainer [2019-11-26 02:58:59,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:58:59,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:58:59,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:58:59,301 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:58:59,302 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:39" (3/4) ... [2019-11-26 02:58:59,305 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:58:59,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:58:59,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:58:59,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:58:59,342 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:58:59,343 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:58:59,393 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2b9cb8e4-b766-49b1-ae7d-1606e2d50d5c/bin/utaipan/witness.graphml [2019-11-26 02:58:59,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:58:59,395 INFO L168 Benchmark]: Toolchain (without parser) took 30188.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 963.1 MB in the beginning and 987.0 MB in the end (delta: -23.8 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:59,395 INFO L168 Benchmark]: CDTParser took 0.29 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 02:58:59,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 963.1 MB in the beginning and 1.2 GB in the end (delta: -190.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:59,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.91 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 02:58:59,396 INFO L168 Benchmark]: Boogie Preprocessor took 53.83 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 02:58:59,397 INFO L168 Benchmark]: RCFGBuilder took 9566.53 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:59,397 INFO L168 Benchmark]: TraceAbstraction took 20017.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.5 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:59,398 INFO L168 Benchmark]: Witness Printer took 92.37 ms. Allocated memory is still 1.2 GB. Free memory was 993.5 MB in the beginning and 987.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:58:59,399 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 395.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 963.1 MB in the beginning and 1.2 GB in the end (delta: -190.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.91 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. * Boogie Preprocessor took 53.83 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 9566.53 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20017.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.5 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. * Witness Printer took 92.37 ms. Allocated memory is still 1.2 GB. Free memory was 993.5 MB in the beginning and 987.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: 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: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant [2019-11-26 02:58:59,408 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,409 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,409 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,409 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,409 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,410 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,410 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,411 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,411 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,411 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 41]: Loop Invariant [2019-11-26 02:58:59,412 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,413 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant [2019-11-26 02:58:59,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,415 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:58:59,416 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:58:59,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((1bv32 == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 19.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 79 SDtfs, 82 SDslu, 151 SDs, 0 SdLazy, 79 SolverSat, 2 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 60 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 5 QuantifiedInterpolants, 3107 SizeOfPredicates, 15 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 22 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...