./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c ........................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:48:33,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:48:33,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:48:33,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:48:33,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:48:33,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:48:33,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:48:33,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:48:33,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:48:33,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:48:33,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:48:33,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:48:33,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:48:33,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:48:33,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:48:33,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:48:33,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:48:33,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:48:33,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:48:33,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:48:33,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:48:33,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:48:33,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:48:33,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:48:33,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:48:33,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:48:33,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:48:33,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:48:33,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:48:33,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:48:33,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:48:33,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:48:33,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:48:33,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:48:33,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:48:33,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:48:33,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:48:33,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:48:33,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:48:33,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:48:33,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:48:33,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:48:33,298 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:48:33,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:48:33,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:48:33,299 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:48:33,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:48:33,300 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:48:33,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:48:33,300 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:48:33,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:48:33,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:48:33,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:48:33,301 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:48:33,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:48:33,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:48:33,302 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:48:33,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:48:33,303 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:48:33,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:48:33,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:48:33,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:48:33,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:48:33,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:48:33,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:48:33,304 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:48:33,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:48:33,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:48:33,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:48:33,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:48:33,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:48:33,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:48:33,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:48:33,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:48:33,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:48:33,307 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:48:33,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:48:33,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:48:33,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:48:33,307 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_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c [2019-11-26 02:48:33,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:48:33,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:48:33,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:48:33,561 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:48:33,561 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:48:33,562 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-11-26 02:48:33,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/75c2da0eb/792c0154349d4fe8a8934976b9ef14b5/FLAG49b25b9fe [2019-11-26 02:48:34,104 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:48:34,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-11-26 02:48:34,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/75c2da0eb/792c0154349d4fe8a8934976b9ef14b5/FLAG49b25b9fe [2019-11-26 02:48:34,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/75c2da0eb/792c0154349d4fe8a8934976b9ef14b5 [2019-11-26 02:48:34,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:48:34,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:48:34,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:34,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:48:34,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:48:34,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e01d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34, skipping insertion in model container [2019-11-26 02:48:34,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:48:34,518 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:48:34,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:34,792 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:48:34,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:34,860 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:48:34,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34 WrapperNode [2019-11-26 02:48:34,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:34,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:34,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:48:34,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:48:34,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:34,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:48:34,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:48:34,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:48:34,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... [2019-11-26 02:48:34,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:48:34,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:48:34,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:48:34,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:48:34,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/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 02:48:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:48:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:48:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:48:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:48:35,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:48:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:48:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:48:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:48:35,560 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:48:35,560 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:48:35,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:35 BoogieIcfgContainer [2019-11-26 02:48:35,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:48:35,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:48:35,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:48:35,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:48:35,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:48:34" (1/3) ... [2019-11-26 02:48:35,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac2639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:35, skipping insertion in model container [2019-11-26 02:48:35,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:34" (2/3) ... [2019-11-26 02:48:35,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac2639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:35, skipping insertion in model container [2019-11-26 02:48:35,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:35" (3/3) ... [2019-11-26 02:48:35,568 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2019-11-26 02:48:35,576 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:48:35,582 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:48:35,590 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:48:35,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:48:35,617 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:48:35,617 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:48:35,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:48:35,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:48:35,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:48:35,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:48:35,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:48:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-26 02:48:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:48:35,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:35,640 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:35,640 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1229588358, now seen corresponding path program 1 times [2019-11-26 02:48:35,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:35,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275115768] [2019-11-26 02:48:35,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:35,768 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 02:48:35,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275115768] [2019-11-26 02:48:35,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:35,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:48:35,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379083492] [2019-11-26 02:48:35,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:48:35,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:48:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:48:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:48:35,787 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-26 02:48:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:35,802 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2019-11-26 02:48:35,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:48:35,803 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:48:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:35,813 INFO L225 Difference]: With dead ends: 31 [2019-11-26 02:48:35,813 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:48:35,820 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 02:48:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:48:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:48:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:48:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-26 02:48:35,849 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2019-11-26 02:48:35,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:35,849 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-26 02:48:35,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:48:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-26 02:48:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:48:35,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:35,850 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:35,851 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1601578325, now seen corresponding path program 1 times [2019-11-26 02:48:35,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:48:35,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258137327] [2019-11-26 02:48:35,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:48:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:48:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:48:36,000 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:48:36,001 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:48:36,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:48:36 BoogieIcfgContainer [2019-11-26 02:48:36,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:48:36,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:48:36,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:48:36,043 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:48:36,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:35" (3/4) ... [2019-11-26 02:48:36,049 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:48:36,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:48:36,053 INFO L168 Benchmark]: Toolchain (without parser) took 1573.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:36,054 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:36,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:36,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.57 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 02:48:36,057 INFO L168 Benchmark]: Boogie Preprocessor took 31.80 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 02:48:36,058 INFO L168 Benchmark]: RCFGBuilder took 618.33 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: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:36,059 INFO L168 Benchmark]: TraceAbstraction took 480.49 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:36,060 INFO L168 Benchmark]: Witness Printer took 7.05 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 02:48:36,071 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 382.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.57 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. * Boogie Preprocessor took 31.80 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 618.33 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: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 480.49 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 7.05 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: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L66] float x = 0.0f / 0.0f; [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [huge_ceil=1000000000000000000000000000000] [L68] float res = ceil_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L72] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:48:38,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:48:38,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:48:38,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:48:38,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:48:38,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:48:38,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:48:38,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:48:38,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:48:38,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:48:38,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:48:38,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:48:38,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:48:38,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:48:38,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:48:38,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:48:38,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:48:38,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:48:38,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:48:38,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:48:38,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:48:38,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:48:38,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:48:38,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:48:38,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:48:38,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:48:38,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:48:38,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:48:38,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:48:38,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:48:38,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:48:38,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:48:38,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:48:38,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:48:38,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:48:38,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:48:38,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:48:38,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:48:38,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:48:38,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:48:38,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:48:38,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:48:38,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:48:38,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:48:38,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:48:38,270 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:48:38,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:48:38,270 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:48:38,270 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:48:38,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:48:38,271 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:48:38,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:48:38,272 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:48:38,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:48:38,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:48:38,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:48:38,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:48:38,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:48:38,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:48:38,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:48:38,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:48:38,274 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:48:38,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:48:38,275 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:48:38,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:48:38,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:48:38,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:48:38,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:48:38,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:48:38,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:48:38,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:48:38,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:48:38,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:48:38,278 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:48:38,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:48:38,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:48:38,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:48:38,279 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_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b9d0a0d91195e42f3fdc78aff518a11cbbaa17c [2019-11-26 02:48:38,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:48:38,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:48:38,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:48:38,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:48:38,658 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:48:38,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-11-26 02:48:38,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/d15b8c66d/a0dd97ce73734b389b013476b8cc1ade/FLAG93fb2de6c [2019-11-26 02:48:39,205 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:48:39,207 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2019-11-26 02:48:39,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/d15b8c66d/a0dd97ce73734b389b013476b8cc1ade/FLAG93fb2de6c [2019-11-26 02:48:39,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/data/d15b8c66d/a0dd97ce73734b389b013476b8cc1ade [2019-11-26 02:48:39,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:48:39,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:48:39,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:39,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:48:39,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:48:39,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2128d673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39, skipping insertion in model container [2019-11-26 02:48:39,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:48:39,585 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:48:39,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:39,834 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:48:39,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:48:39,892 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:48:39,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39 WrapperNode [2019-11-26 02:48:39,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:48:39,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:39,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:48:39,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:48:39,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:39,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:48:40,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:48:40,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:48:40,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:48:40,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... [2019-11-26 02:48:40,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:48:40,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:48:40,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:48:40,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:48:40,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/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 02:48:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:48:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 02:48:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:48:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:48:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:48:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:48:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:48:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:48:40,842 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:48:40,842 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:48:40,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:40 BoogieIcfgContainer [2019-11-26 02:48:40,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:48:40,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:48:40,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:48:40,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:48:40,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:48:39" (1/3) ... [2019-11-26 02:48:40,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cc0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:40, skipping insertion in model container [2019-11-26 02:48:40,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:48:39" (2/3) ... [2019-11-26 02:48:40,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cc0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:48:40, skipping insertion in model container [2019-11-26 02:48:40,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:40" (3/3) ... [2019-11-26 02:48:40,852 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2019-11-26 02:48:40,861 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:48:40,868 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:48:40,879 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:48:40,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:48:40,902 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:48:40,902 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:48:40,903 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:48:40,903 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:48:40,903 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:48:40,903 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:48:40,903 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:48:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-26 02:48:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:48:40,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:40,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:40,929 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:40,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2019-11-26 02:48:40,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:40,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338357305] [2019-11-26 02:48:40,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/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 02:48:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:41,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:48:41,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:41,111 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 02:48:41,112 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:41,116 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 02:48:41,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338357305] [2019-11-26 02:48:41,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:41,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:48:41,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677121044] [2019-11-26 02:48:41,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:48:41,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:41,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:48:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:48:41,144 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-26 02:48:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:41,166 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2019-11-26 02:48:41,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:48:41,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:48:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:41,181 INFO L225 Difference]: With dead ends: 50 [2019-11-26 02:48:41,181 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:48:41,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:48:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:48:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:48:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:48:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-11-26 02:48:41,226 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2019-11-26 02:48:41,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:41,227 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-11-26 02:48:41,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:48:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-11-26 02:48:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:48:41,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:41,228 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:41,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:48:41,442 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:41,442 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2019-11-26 02:48:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:41,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589890806] [2019-11-26 02:48:41,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/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 02:48:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:41,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:48:41,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:41,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:48:41,740 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 02:48:41,741 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:41,878 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 02:48:41,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589890806] [2019-11-26 02:48:41,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:41,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:48:41,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898449608] [2019-11-26 02:48:41,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:48:41,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:41,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:48:41,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:48:41,883 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2019-11-26 02:48:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:42,583 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-26 02:48:42,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:48:42,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-11-26 02:48:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:42,585 INFO L225 Difference]: With dead ends: 34 [2019-11-26 02:48:42,585 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:48:42,586 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:48:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:48:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:48:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:48:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-26 02:48:42,594 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-11-26 02:48:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:42,598 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-26 02:48:42,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:48:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-26 02:48:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:48:42,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:48:42,601 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:48:42,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:48:42,814 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:48:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:48:42,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2019-11-26 02:48:42,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:48:42,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711132907] [2019-11-26 02:48:42,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/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 02:48:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:48:42,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:48:42,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:48:43,061 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 02:48:43,062 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:48:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:48:43,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711132907] [2019-11-26 02:48:43,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:48:43,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:48:43,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902855602] [2019-11-26 02:48:43,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:48:43,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:48:43,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:48:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:48:43,222 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2019-11-26 02:48:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:48:43,412 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-26 02:48:43,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:48:43,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-26 02:48:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:48:43,412 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:48:43,413 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:48:43,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:48:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:48:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:48:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:48:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:48:43,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-26 02:48:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:48:43,414 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:48:43,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:48:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:48:43,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:48:43,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:48:43,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:48:43,768 INFO L444 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2019-11-26 02:48:43,768 INFO L444 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2019-11-26 02:48:43,768 INFO L444 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:48:43,769 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-11-26 02:48:43,770 INFO L440 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_ceil_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:48:43,770 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2019-11-26 02:48:43,770 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2019-11-26 02:48:43,770 INFO L440 ceAbstractionStarter]: At program point L53(lines 13 54) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_ceil_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:48:43,770 INFO L444 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2019-11-26 02:48:43,770 INFO L440 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_ceil_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L71(lines 71 74) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2019-11-26 02:48:43,771 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2019-11-26 02:48:43,772 INFO L447 ceAbstractionStarter]: At program point L76(lines 59 77) the Hoare annotation is: true [2019-11-26 02:48:43,772 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2019-11-26 02:48:43,772 INFO L444 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2019-11-26 02:48:43,776 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,777 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,787 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,788 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,788 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,789 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,789 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:48:43 BoogieIcfgContainer [2019-11-26 02:48:43,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:48:43,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:48:43,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:48:43,792 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:48:43,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:48:40" (3/4) ... [2019-11-26 02:48:43,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:48:43,808 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:48:43,809 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:48:43,809 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:48:43,835 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:48:43,836 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:48:43,837 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:48:43,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4f277bd-b62c-4765-8ff4-586e210c48fb/bin/utaipan/witness.graphml [2019-11-26 02:48:43,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:48:43,866 INFO L168 Benchmark]: Toolchain (without parser) took 4326.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 957.8 MB in the beginning and 1.0 GB in the end (delta: -62.2 MB). Peak memory consumption was 98.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,866 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:48:43,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.06 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -203.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,868 INFO L168 Benchmark]: Boogie Preprocessor took 36.62 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 02:48:43,869 INFO L168 Benchmark]: RCFGBuilder took 785.65 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,869 INFO L168 Benchmark]: TraceAbstraction took 2946.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,870 INFO L168 Benchmark]: Witness Printer took 71.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:48:43,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 353.06 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 126.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -203.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.62 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 785.65 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2946.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 11.5 GB. * Witness Printer took 71.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2019-11-26 02:48:43,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2019-11-26 02:48:43,885 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,885 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 57]: Loop Invariant [2019-11-26 02:48:43,886 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,886 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,887 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:48:43,887 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2730 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...