./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:58:30,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:58:30,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:58:30,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:58:30,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:58:30,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:58:30,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:58:30,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:58:30,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:58:30,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:58:30,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:58:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:58:30,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:58:30,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:58:30,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:58:30,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:58:30,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:58:30,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:58:30,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:58:30,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:58:30,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:58:30,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:58:30,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:58:30,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:58:30,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:58:30,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:58:30,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:58:30,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:58:30,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:58:30,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:58:30,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:58:30,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:58:30,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:58:30,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:58:30,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:58:30,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:58:30,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:58:30,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:58:30,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:58:30,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:58:30,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:58:30,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:58:30,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:58:30,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:58:30,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:58:30,369 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:58:30,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:58:30,369 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:58:30,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:58:30,369 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:58:30,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:58:30,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:58:30,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:58:30,370 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:58:30,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:58:30,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:58:30,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:58:30,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:58:30,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:58:30,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:58:30,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:58:30,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:58:30,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:58:30,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:58:30,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:58:30,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:58:30,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:58:30,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:58:30,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:58:30,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:58:30,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:58:30,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-12-09 11:58:30,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:58:30,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:58:30,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:58:30,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:58:30,585 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:58:30,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-12-09 11:58:30,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/4797834e0/5e43dfbd9c6d471eaad2f49ba193b26f/FLAGc96f6e27a [2020-12-09 11:58:31,023 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:58:31,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-12-09 11:58:31,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/4797834e0/5e43dfbd9c6d471eaad2f49ba193b26f/FLAGc96f6e27a [2020-12-09 11:58:31,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/4797834e0/5e43dfbd9c6d471eaad2f49ba193b26f [2020-12-09 11:58:31,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:58:31,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:58:31,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:58:31,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:58:31,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:58:31,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2526810d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31, skipping insertion in model container [2020-12-09 11:58:31,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:58:31,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:58:31,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2020-12-09 11:58:31,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:58:31,172 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:58:31,192 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2020-12-09 11:58:31,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:58:31,207 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:58:31,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31 WrapperNode [2020-12-09 11:58:31,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:58:31,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:58:31,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:58:31,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:58:31,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:58:31,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:58:31,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:58:31,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:58:31,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... [2020-12-09 11:58:31,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:58:31,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:58:31,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:58:31,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:58:31,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/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 [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:58:31,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 11:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 11:58:31,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:58:31,464 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 11:58:31,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:31 BoogieIcfgContainer [2020-12-09 11:58:31,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:58:31,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:58:31,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:58:31,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:58:31,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:58:31" (1/3) ... [2020-12-09 11:58:31,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74762279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:58:31, skipping insertion in model container [2020-12-09 11:58:31,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:31" (2/3) ... [2020-12-09 11:58:31,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74762279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:58:31, skipping insertion in model container [2020-12-09 11:58:31,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:31" (3/3) ... [2020-12-09 11:58:31,472 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-12-09 11:58:31,481 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:58:31,483 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:58:31,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:58:31,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:58:31,507 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:58:31,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:58:31,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:58:31,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:58:31,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:58:31,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:58:31,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:58:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 11:58:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:58:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:58:31,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:58:31,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:58:31,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:58:31,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2074062970, now seen corresponding path program 1 times [2020-12-09 11:58:31,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:58:31,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284434612] [2020-12-09 11:58:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:58:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:58:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:58:31,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284434612] [2020-12-09 11:58:31,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:58:31,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:58:31,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731660578] [2020-12-09 11:58:31,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 11:58:31,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:58:31,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 11:58:31,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:58:31,643 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-09 11:58:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:58:31,653 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-12-09 11:58:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 11:58:31,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 11:58:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:58:31,660 INFO L225 Difference]: With dead ends: 21 [2020-12-09 11:58:31,660 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 11:58:31,662 INFO L677 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 [2020-12-09 11:58:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 11:58:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 11:58:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 11:58:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-09 11:58:31,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-12-09 11:58:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:58:31,683 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-09 11:58:31,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 11:58:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-09 11:58:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 11:58:31,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:58:31,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:58:31,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:58:31,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:58:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:58:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2033959651, now seen corresponding path program 1 times [2020-12-09 11:58:31,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:58:31,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756855821] [2020-12-09 11:58:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:58:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:58:31,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:58:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:58:31,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:58:31,753 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 11:58:31,753 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 11:58:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:58:31,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:58:31 BoogieIcfgContainer [2020-12-09 11:58:31,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:58:31,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:58:31,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:58:31,769 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:58:31,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:31" (3/4) ... [2020-12-09 11:58:31,772 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 11:58:31,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:58:31,773 INFO L168 Benchmark]: Toolchain (without parser) took 732.35 ms. Allocated memory is still 79.7 MB. Free memory was 54.6 MB in the beginning and 41.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:31,774 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:31,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.42 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 58.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:31,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.30 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:31,775 INFO L168 Benchmark]: Boogie Preprocessor took 17.18 ms. Allocated memory is still 79.7 MB. Free memory was 56.9 MB in the beginning and 55.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:31,776 INFO L168 Benchmark]: RCFGBuilder took 217.43 ms. Allocated memory is still 79.7 MB. Free memory was 55.6 MB in the beginning and 39.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:31,776 INFO L168 Benchmark]: TraceAbstraction took 301.95 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 41.7 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:31,777 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 79.7 MB. Free memory was 41.7 MB in the beginning and 41.1 MB in the end (delta: 581.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:31,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 166.42 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 58.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.30 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.18 ms. Allocated memory is still 79.7 MB. Free memory was 56.9 MB in the beginning and 55.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 217.43 ms. Allocated memory is still 79.7 MB. Free memory was 55.6 MB in the beginning and 39.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 301.95 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 41.7 MB in the end (delta: -2.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.81 ms. Allocated memory is still 79.7 MB. Free memory was 41.7 MB in the beginning and 41.1 MB in the end (delta: 581.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 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=11occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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, ACCELERATED_INTERPOLATION: 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 0.2.0-7b2dab5 [2020-12-09 11:58:33,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:58:33,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:58:33,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:58:33,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:58:33,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:58:33,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:58:33,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:58:33,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:58:33,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:58:33,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:58:33,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:58:33,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:58:33,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:58:33,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:58:33,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:58:33,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:58:33,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:58:33,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:58:33,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:58:33,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:58:33,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:58:33,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:58:33,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:58:33,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:58:33,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:58:33,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:58:33,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:58:33,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:58:33,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:58:33,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:58:33,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:58:33,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:58:33,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:58:33,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:58:33,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:58:33,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:58:33,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:58:33,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:58:33,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:58:33,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:58:33,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 11:58:33,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:58:33,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:58:33,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:58:33,416 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:58:33,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:58:33,416 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:58:33,417 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:58:33,417 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:58:33,417 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:58:33,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:58:33,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 11:58:33,418 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:58:33,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:58:33,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:58:33,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:58:33,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:58:33,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:58:33,421 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-12-09 11:58:33,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:58:33,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:58:33,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:58:33,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:58:33,691 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:58:33,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-12-09 11:58:33,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/85d5e5016/9e3eca2bc74940b597d2d83324458683/FLAG6e434ec23 [2020-12-09 11:58:34,099 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:58:34,099 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-12-09 11:58:34,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/85d5e5016/9e3eca2bc74940b597d2d83324458683/FLAG6e434ec23 [2020-12-09 11:58:34,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/data/85d5e5016/9e3eca2bc74940b597d2d83324458683 [2020-12-09 11:58:34,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:58:34,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:58:34,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:58:34,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:58:34,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:58:34,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8d2ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34, skipping insertion in model container [2020-12-09 11:58:34,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:58:34,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:58:34,266 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2020-12-09 11:58:34,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:58:34,279 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:58:34,294 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2020-12-09 11:58:34,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:58:34,309 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:58:34,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34 WrapperNode [2020-12-09 11:58:34,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:58:34,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:58:34,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:58:34,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:58:34,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:58:34,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:58:34,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:58:34,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:58:34,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... [2020-12-09 11:58:34,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:58:34,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:58:34,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:58:34,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:58:34,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/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 [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:58:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:58:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 11:58:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 11:58:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 11:58:34,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:58:34,624 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 11:58:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:34 BoogieIcfgContainer [2020-12-09 11:58:34,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:58:34,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:58:34,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:58:34,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:58:34,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:58:34" (1/3) ... [2020-12-09 11:58:34,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e914d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:58:34, skipping insertion in model container [2020-12-09 11:58:34,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:58:34" (2/3) ... [2020-12-09 11:58:34,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e914d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:58:34, skipping insertion in model container [2020-12-09 11:58:34,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:34" (3/3) ... [2020-12-09 11:58:34,630 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-12-09 11:58:34,640 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:58:34,642 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:58:34,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:58:34,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:58:34,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:58:34,665 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:58:34,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:58:34,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:58:34,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:58:34,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:58:34,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:58:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 11:58:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 11:58:34,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:58:34,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:58:34,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:58:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:58:34,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-12-09 11:58:34,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:58:34,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13193571] [2020-12-09 11:58:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/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 [2020-12-09 11:58:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:58:34,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 11:58:34,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:58:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:58:34,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:58:34,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13193571] [2020-12-09 11:58:34,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:58:34,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:58:34,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770876688] [2020-12-09 11:58:34,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 11:58:34,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:58:34,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 11:58:34,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:58:34,817 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-09 11:58:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:58:34,829 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2020-12-09 11:58:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 11:58:34,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-09 11:58:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:58:34,838 INFO L225 Difference]: With dead ends: 28 [2020-12-09 11:58:34,838 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 11:58:34,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:58:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 11:58:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 11:58:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 11:58:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 11:58:34,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-12-09 11:58:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:58:34,862 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 11:58:34,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 11:58:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 11:58:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 11:58:34,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:58:34,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:58:35,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 11:58:35,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:58:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:58:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-12-09 11:58:35,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:58:35,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256874677] [2020-12-09 11:58:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/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 [2020-12-09 11:58:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:58:35,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 11:58:35,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:58:35,197 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 11:58:35,198 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:58:35,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:58:35,224 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 11:58:35,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:32 [2020-12-09 11:58:35,262 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2020-12-09 11:58:35,263 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 11:58:35,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:58:35,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 11:58:35,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:28 [2020-12-09 11:58:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:58:35,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:58:35,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256874677] [2020-12-09 11:58:35,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:58:35,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 11:58:35,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237119768] [2020-12-09 11:58:35,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 11:58:35,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:58:35,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 11:58:35,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:58:35,364 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 7 states. [2020-12-09 11:58:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:58:35,578 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-09 11:58:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:58:35,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 11:58:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:58:35,578 INFO L225 Difference]: With dead ends: 12 [2020-12-09 11:58:35,578 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:58:35,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-09 11:58:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:58:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:58:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:58:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:58:35,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 11:58:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:58:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:58:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 11:58:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:58:35,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:58:35,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 11:58:35,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:58:35,883 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:58:35,883 INFO L262 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L265 CegarLoopResult]: At program point L46(lines 31 47) the Hoare annotation is: true [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L258 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fabs_float_#res|))) [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-12-09 11:58:35,884 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-12-09 11:58:35,885 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) [2020-12-09 11:58:35,885 INFO L258 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fabs_float_#res|))) [2020-12-09 11:58:35,885 INFO L262 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-12-09 11:58:35,889 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,895 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,896 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:58:35 BoogieIcfgContainer [2020-12-09 11:58:35,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:58:35,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:58:35,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:58:35,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:58:35,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:58:34" (3/4) ... [2020-12-09 11:58:35,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:58:35,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 11:58:35,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 11:58:35,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 11:58:35,908 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 11:58:35,925 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 11:58:35,930 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_59a2158b-9f48-4790-b665-89758284689e/bin/utaipan/witness.graphml [2020-12-09 11:58:35,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:58:35,931 INFO L168 Benchmark]: Toolchain (without parser) took 1808.31 ms. Allocated memory was 48.2 MB in the beginning and 73.4 MB in the end (delta: 25.2 MB). Free memory was 24.7 MB in the beginning and 43.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,931 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 30.9 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:35,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.3 MB in the end (delta: -879.2 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.89 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 45.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,933 INFO L168 Benchmark]: Boogie Preprocessor took 30.03 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:58:35,933 INFO L168 Benchmark]: RCFGBuilder took 234.80 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.9 MB in the end (delta: 630.1 kB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,934 INFO L168 Benchmark]: TraceAbstraction took 1271.43 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.7 MB in the beginning and 45.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,934 INFO L168 Benchmark]: Witness Printer took 32.45 ms. Allocated memory is still 73.4 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:58:35,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 30.9 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 186.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.3 MB in the end (delta: -879.2 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.89 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 45.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.03 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.80 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.9 MB in the end (delta: 630.1 kB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1271.43 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 42.7 MB in the beginning and 45.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 32.45 ms. Allocated memory is still 73.4 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 11:58:35,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 16]: Loop Invariant [2020-12-09 11:58:35,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,943 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 14]: Loop Invariant [2020-12-09 11:58:35,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 11:58:35,944 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 8 SDslu, 12 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 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, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 6 QuantifiedInterpolants, 1084 SizeOfPredicates, 12 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...