./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0730b.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_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 3c929687e1048988919d423afa09e6828bbc6230 .......................................................................................................................................................................................................................................................................................................... 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_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 3c929687e1048988919d423afa09e6828bbc6230 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:32:15,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:32:15,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:32:15,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:32:15,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:32:15,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:32:15,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:32:15,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:32:15,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:32:15,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:32:15,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:32:15,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:32:15,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:32:15,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:32:15,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:32:15,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:32:15,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:32:15,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:32:15,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:32:15,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:32:15,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:32:15,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:32:15,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:32:15,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:32:15,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:32:15,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:32:15,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:32:15,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:32:15,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:32:15,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:32:15,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:32:15,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:32:15,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:32:15,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:32:15,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:32:15,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:32:15,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:32:15,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:32:15,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:32:15,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:32:15,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:32:15,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:32:15,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:32:15,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:32:15,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:32:15,492 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:32:15,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:32:15,492 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:32:15,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:32:15,493 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:32:15,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:32:15,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:32:15,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:32:15,494 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:32:15,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:32:15,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:32:15,494 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:32:15,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:32:15,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:32:15,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:32:15,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:32:15,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:32:15,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:32:15,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:32:15,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:32:15,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:32:15,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:32:15,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:32:15,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:32:15,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:32:15,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:32:15,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:32:15,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:32:15,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:32:15,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:32:15,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:32:15,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:32:15,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:32:15,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:32:15,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:32:15,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:32:15,499 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_fd2be858-938a-4575-95a7-94b72ff64cdc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c929687e1048988919d423afa09e6828bbc6230 [2020-12-03 12:32:15,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:32:15,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:32:15,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:32:15,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:32:15,765 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:32:15,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2020-12-03 12:32:15,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/d7f32912f/b4690f5159f54cb488b1b03364aba7ed/FLAG6561cba03 [2020-12-03 12:32:16,288 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:32:16,289 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2020-12-03 12:32:16,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/d7f32912f/b4690f5159f54cb488b1b03364aba7ed/FLAG6561cba03 [2020-12-03 12:32:16,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/d7f32912f/b4690f5159f54cb488b1b03364aba7ed [2020-12-03 12:32:16,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:32:16,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:32:16,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:32:16,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:32:16,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:32:16,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:32:16" (1/1) ... [2020-12-03 12:32:16,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbd9833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:16, skipping insertion in model container [2020-12-03 12:32:16,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:32:16" (1/1) ... [2020-12-03 12:32:16,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:32:16,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:32:17,004 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_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c[2069,2082] [2020-12-03 12:32:17,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:32:17,022 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:32:17,080 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_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c[2069,2082] [2020-12-03 12:32:17,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:32:17,107 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:32:17,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17 WrapperNode [2020-12-03 12:32:17,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:32:17,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:32:17,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:32:17,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:32:17,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:32:17,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:32:17,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:32:17,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:32:17,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... [2020-12-03 12:32:17,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:32:17,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:32:17,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:32:17,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:32:17,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 [2020-12-03 12:32:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:32:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:32:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-03 12:32:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:32:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-03 12:32:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:32:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:32:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:32:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:32:17,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:32:17,933 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-03 12:32:17,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:17 BoogieIcfgContainer [2020-12-03 12:32:17,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:32:17,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:32:17,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:32:17,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:32:17,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:32:16" (1/3) ... [2020-12-03 12:32:17,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc4cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:32:17, skipping insertion in model container [2020-12-03 12:32:17,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:17" (2/3) ... [2020-12-03 12:32:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc4cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:32:17, skipping insertion in model container [2020-12-03 12:32:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:17" (3/3) ... [2020-12-03 12:32:17,946 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c [2020-12-03 12:32:17,960 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:32:17,964 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:32:17,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:32:17,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:32:17,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:32:17,998 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:32:17,998 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:32:17,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:32:17,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:32:17,999 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:32:17,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:32:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-03 12:32:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:32:18,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:18,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:18,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:18,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1703431191, now seen corresponding path program 1 times [2020-12-03 12:32:18,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:32:18,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58460936] [2020-12-03 12:32:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:32:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:32:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:32:18,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58460936] [2020-12-03 12:32:18,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:32:18,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:32:18,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703773752] [2020-12-03 12:32:18,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:32:18,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:32:18,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:32:18,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:32:18,195 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-03 12:32:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:32:18,222 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2020-12-03 12:32:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:32:18,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-03 12:32:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:32:18,237 INFO L225 Difference]: With dead ends: 47 [2020-12-03 12:32:18,237 INFO L226 Difference]: Without dead ends: 22 [2020-12-03 12:32:18,247 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 [2020-12-03 12:32:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-03 12:32:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-03 12:32:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-03 12:32:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-12-03 12:32:18,284 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 8 [2020-12-03 12:32:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:32:18,284 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-12-03 12:32:18,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:32:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-12-03 12:32:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 12:32:18,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:18,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:18,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:32:18,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1637063338, now seen corresponding path program 1 times [2020-12-03 12:32:18,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:32:18,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365004631] [2020-12-03 12:32:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:32:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:32:18,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:32:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:32:18,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:32:18,437 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:32:18,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:32:18,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:32:18,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:32:18 BoogieIcfgContainer [2020-12-03 12:32:18,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:32:18,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:32:18,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:32:18,482 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:32:18,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:17" (3/4) ... [2020-12-03 12:32:18,487 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:32:18,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:32:18,492 INFO L168 Benchmark]: Toolchain (without parser) took 1802.34 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 58.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,492 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:32:18,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.57 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 83.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.34 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 81.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,495 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,497 INFO L168 Benchmark]: RCFGBuilder took 712.47 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 81.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,497 INFO L168 Benchmark]: TraceAbstraction took 542.46 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 59.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:18,499 INFO L168 Benchmark]: Witness Printer took 6.98 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 58.6 MB in the end (delta: 564.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:32:18,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.57 ms. Allocated memory is still 107.0 MB. Free memory was 78.5 MB in the beginning and 83.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.34 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 81.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 712.47 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 81.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 542.46 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 59.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.98 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 58.6 MB in the end (delta: 564.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: 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 107, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L103] float x = 0.0f; [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L104] float res = __ieee754_sqrtf(x); [L107] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L107] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L108] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=24occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 [2020-12-03 12:32:21,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:32:21,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:32:21,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:32:21,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:32:21,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:32:21,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:32:21,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:32:21,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:32:21,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:32:21,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:32:21,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:32:21,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:32:21,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:32:21,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:32:21,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:32:21,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:32:21,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:32:21,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:32:21,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:32:21,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:32:21,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:32:21,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:32:21,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:32:21,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:32:21,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:32:21,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:32:21,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:32:21,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:32:21,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:32:21,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:32:21,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:32:21,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:32:21,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:32:21,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:32:21,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:32:21,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:32:21,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:32:21,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:32:21,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:32:21,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:32:21,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:32:21,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:32:21,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:32:21,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:32:21,284 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:32:21,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:32:21,285 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:32:21,285 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:32:21,285 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:32:21,285 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:32:21,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:32:21,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:32:21,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:32:21,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:32:21,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:32:21,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:32:21,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:32:21,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:32:21,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:32:21,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:32:21,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:32:21,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:32:21,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:32:21,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:32:21,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:32:21,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:32:21,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:32:21,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:32:21,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:32:21,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:32:21,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:32:21,291 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:32:21,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:32:21,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:32:21,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:32:21,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:32:21,293 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_fd2be858-938a-4575-95a7-94b72ff64cdc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c929687e1048988919d423afa09e6828bbc6230 [2020-12-03 12:32:21,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:32:21,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:32:21,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:32:21,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:32:21,691 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:32:21,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2020-12-03 12:32:21,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/15e3b3fa0/ff1301efe3c0470192f4270a3551e18e/FLAG5305072bc [2020-12-03 12:32:22,363 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:32:22,363 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c [2020-12-03 12:32:22,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/15e3b3fa0/ff1301efe3c0470192f4270a3551e18e/FLAG5305072bc [2020-12-03 12:32:22,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/data/15e3b3fa0/ff1301efe3c0470192f4270a3551e18e [2020-12-03 12:32:22,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:32:22,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:32:22,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:32:22,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:32:22,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:32:22,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:32:22" (1/1) ... [2020-12-03 12:32:22,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c58ee9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:22, skipping insertion in model container [2020-12-03 12:32:22,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:32:22" (1/1) ... [2020-12-03 12:32:22,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:32:22,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:32:22,940 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_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c[2069,2082] [2020-12-03 12:32:22,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:32:22,957 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:32:23,030 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_fd2be858-938a-4575-95a7-94b72ff64cdc/sv-benchmarks/c/float-newlib/float_req_bl_0730b.c[2069,2082] [2020-12-03 12:32:23,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:32:23,051 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:32:23,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23 WrapperNode [2020-12-03 12:32:23,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:32:23,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:32:23,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:32:23,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:32:23,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:32:23,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:32:23,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:32:23,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:32:23,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... [2020-12-03 12:32:23,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:32:23,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:32:23,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:32:23,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:32:23,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 [2020-12-03 12:32:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:32:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:32:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-03 12:32:23,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-03 12:32:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:32:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:32:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-03 12:32:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-03 12:32:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:32:25,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:32:25,492 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-03 12:32:25,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:25 BoogieIcfgContainer [2020-12-03 12:32:25,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:32:25,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:32:25,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:32:25,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:32:25,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:32:22" (1/3) ... [2020-12-03 12:32:25,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fa1fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:32:25, skipping insertion in model container [2020-12-03 12:32:25,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:32:23" (2/3) ... [2020-12-03 12:32:25,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fa1fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:32:25, skipping insertion in model container [2020-12-03 12:32:25,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:25" (3/3) ... [2020-12-03 12:32:25,503 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c [2020-12-03 12:32:25,518 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:32:25,521 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:32:25,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:32:25,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:32:25,556 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:32:25,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:32:25,556 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:32:25,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:32:25,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:32:25,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:32:25,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:32:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-03 12:32:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 12:32:25,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:25,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:25,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:25,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1903716510, now seen corresponding path program 1 times [2020-12-03 12:32:25,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:32:25,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852021869] [2020-12-03 12:32:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 [2020-12-03 12:32:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:32:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-03 12:32:25,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:32:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:32:25,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:32:25,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852021869] [2020-12-03 12:32:25,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:32:25,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:32:25,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449794528] [2020-12-03 12:32:25,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:32:25,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:32:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:32:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:32:25,924 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-03 12:32:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:32:25,952 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2020-12-03 12:32:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:32:25,954 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-03 12:32:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:32:25,967 INFO L225 Difference]: With dead ends: 72 [2020-12-03 12:32:25,968 INFO L226 Difference]: Without dead ends: 34 [2020-12-03 12:32:25,971 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 [2020-12-03 12:32:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-03 12:32:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-03 12:32:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-03 12:32:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-12-03 12:32:26,012 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 9 [2020-12-03 12:32:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:32:26,013 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-12-03 12:32:26,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:32:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-12-03 12:32:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:32:26,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:26,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:26,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:32:26,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:26,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1484634303, now seen corresponding path program 1 times [2020-12-03 12:32:26,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:32:26,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98472420] [2020-12-03 12:32:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/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 [2020-12-03 12:32:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:32:26,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 12:32:26,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:32:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:32:26,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:32:26,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98472420] [2020-12-03 12:32:26,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:32:26,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:32:26,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795935969] [2020-12-03 12:32:26,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:32:26,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:32:26,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:32:26,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:32:26,571 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 5 states. [2020-12-03 12:32:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:32:26,659 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-03 12:32:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:32:26,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 12:32:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:32:26,660 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:32:26,661 INFO L226 Difference]: Without dead ends: 16 [2020-12-03 12:32:26,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:32:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-03 12:32:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-03 12:32:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-03 12:32:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-03 12:32:26,666 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-12-03 12:32:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:32:26,672 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-03 12:32:26,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:32:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-03 12:32:26,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:32:26,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:26,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:26,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 12:32:26,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1245587968, now seen corresponding path program 1 times [2020-12-03 12:32:26,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:32:26,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435936368] [2020-12-03 12:32:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-03 12:32:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:32:26,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 12:32:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:32:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:32:27,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:32:27,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435936368] [2020-12-03 12:32:27,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:32:27,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:32:27,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948102603] [2020-12-03 12:32:27,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:32:27,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:32:27,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:32:27,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:32:27,109 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-12-03 12:32:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:32:27,242 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-03 12:32:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:32:27,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-03 12:32:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:32:27,243 INFO L225 Difference]: With dead ends: 19 [2020-12-03 12:32:27,243 INFO L226 Difference]: Without dead ends: 16 [2020-12-03 12:32:27,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:32:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-03 12:32:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-03 12:32:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-03 12:32:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-03 12:32:27,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-12-03 12:32:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:32:27,248 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-03 12:32:27,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:32:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-03 12:32:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:32:27,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:32:27,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:32:27,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-03 12:32:27,450 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:32:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:32:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 336653141, now seen corresponding path program 1 times [2020-12-03 12:32:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:32:27,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779181400] [2020-12-03 12:32:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-03 12:32:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:32:27,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-03 12:32:27,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:32:27,694 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:32:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:32:27,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:32:27,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779181400] [2020-12-03 12:32:27,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:32:27,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-03 12:32:27,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316183446] [2020-12-03 12:32:27,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 12:32:27,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:32:27,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 12:32:27,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:32:27,780 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 9 states. [2020-12-03 12:32:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:32:28,080 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-12-03 12:32:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:32:28,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-03 12:32:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:32:28,082 INFO L225 Difference]: With dead ends: 16 [2020-12-03 12:32:28,082 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:32:28,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-03 12:32:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:32:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:32:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:32:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:32:28,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-03 12:32:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:32:28,084 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:32:28,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 12:32:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:32:28,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:32:28,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-03 12:32:28,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:32:28,492 INFO L258 CegarLoopResult]: At program point L52-2(lines 52 61) the Hoare annotation is: false [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2020-12-03 12:32:28,493 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short13| (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24))) [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L86-3(lines 86 90) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L54(lines 54 58) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L258 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) [2020-12-03 12:32:28,494 INFO L262 CegarLoopResult]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2020-12-03 12:32:28,494 INFO L265 CegarLoopResult]: At program point L112(lines 95 113) the Hoare annotation is: true [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L258 CegarLoopResult]: At program point L38-3(lines 38 39) the Hoare annotation is: false [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L63(lines 63 72) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L258 CegarLoopResult]: At program point L80(lines 16 81) the Hoare annotation is: (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24))) [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L65(lines 65 71) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-03 12:32:28,495 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 108) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L107-2(lines 107 110) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L258 CegarLoopResult]: At program point L75-2(lines 75 79) the Hoare annotation is: false [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2020-12-03 12:32:28,496 INFO L262 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-12-03 12:32:28,497 INFO L258 CegarLoopResult]: At program point L92(lines 83 93) the Hoare annotation is: (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24)))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___ieee754_sqrtf_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0))) |ULTIMATE.start_main_#t~short13| (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (_ +zero 8 24))) [2020-12-03 12:32:28,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,510 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,511 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,519 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,520 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,521 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,522 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,523 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,523 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,524 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,524 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,525 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,526 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,526 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,526 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,527 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,528 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:32:28 BoogieIcfgContainer [2020-12-03 12:32:28,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:32:28,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:32:28,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:32:28,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:32:28,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:32:25" (3/4) ... [2020-12-03 12:32:28,535 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:32:28,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-03 12:32:28,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-03 12:32:28,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:32:28,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:32:28,573 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() [2020-12-03 12:32:28,574 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() [2020-12-03 12:32:28,575 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() [2020-12-03 12:32:28,601 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fd2be858-938a-4575-95a7-94b72ff64cdc/bin/utaipan/witness.graphml [2020-12-03 12:32:28,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:32:28,603 INFO L168 Benchmark]: Toolchain (without parser) took 5898.39 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.5 MB in the beginning and 42.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,603 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:32:28,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.12 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 45.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.55 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,605 INFO L168 Benchmark]: Boogie Preprocessor took 73.54 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:32:28,605 INFO L168 Benchmark]: RCFGBuilder took 2281.82 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.9 MB in the beginning and 50.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,606 INFO L168 Benchmark]: TraceAbstraction took 3034.66 ms. Allocated memory is still 75.5 MB. Free memory was 49.8 MB in the beginning and 46.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,606 INFO L168 Benchmark]: Witness Printer took 70.53 ms. Allocated memory is still 75.5 MB. Free memory was 46.9 MB in the beginning and 42.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:32:28,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.12 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 45.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.55 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.54 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2281.82 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.9 MB in the beginning and 50.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3034.66 ms. Allocated memory is still 75.5 MB. Free memory was 49.8 MB in the beginning and 46.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.53 ms. Allocated memory is still 75.5 MB. Free memory was 46.9 MB in the beginning and 42.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 108]: 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: 16]: Loop Invariant [2020-12-03 12:32:28,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 83]: Loop Invariant [2020-12-03 12:32:28,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: ((((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 86]: Loop Invariant [2020-12-03 12:32:28,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-03 12:32:28,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: ((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~Pluszero~LONGDOUBLE() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 81 SDslu, 43 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 129 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 1 QuantifiedInterpolants, 1334 SizeOfPredicates, 22 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...