./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl --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 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:30,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:30,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:30,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:30,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:30,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:30,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:30,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:30,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:30,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:30,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:30,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:30,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:30,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:30,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:30,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:30,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:30,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:30,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:30,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:30,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:30,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:30,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:30,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:30,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:30,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:30,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:30,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:30,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:30,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:30,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:30,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:30,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:30,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:30,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:30,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:30,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:30,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:30,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:30,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:30,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:30,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:48:30,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:30,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:30,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:30,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:30,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:30,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:30,461 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:30,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:30,461 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:30,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:48:30,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:30,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:30,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:48:30,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:48:30,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:30,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:48:30,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:48:30,463 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:48:30,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:30,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:30,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:48:30,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:30,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:30,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:30,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:30,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:30,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:30,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:30,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:30,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:30,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:30,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:30,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:30,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:30,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:30,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:30,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:48:30,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:48:30,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:30,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:30,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:30,469 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_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-11-23 16:48:30,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:30,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:30,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:30,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:30,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:30,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-23 16:48:30,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/c63720478/c230cd1be7904ee39b7400d9303d8e60/FLAG0d3f616ef [2021-11-23 16:48:31,337 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:31,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-23 16:48:31,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/c63720478/c230cd1be7904ee39b7400d9303d8e60/FLAG0d3f616ef [2021-11-23 16:48:31,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/c63720478/c230cd1be7904ee39b7400d9303d8e60 [2021-11-23 16:48:31,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:31,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:31,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:31,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:31,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:31,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:31,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47889bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31, skipping insertion in model container [2021-11-23 16:48:31,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:31,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:31,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:31,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-23 16:48:31,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:31,942 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:31,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-23 16:48:31,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:31,977 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:31,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31 WrapperNode [2021-11-23 16:48:31,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:31,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:31,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:31,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:31,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:31,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,016 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-11-23 16:48:32,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:32,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:32,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:32,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:32,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:32,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:32,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:32,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:32,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:31" (1/1) ... [2021-11-23 16:48:32,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:32,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:32,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:48:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:48:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 16:48:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:48:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 16:48:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:48:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:48:32,189 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:32,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:32,368 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:32,398 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:48:32,402 INFO L158 Benchmark]: Toolchain (without parser) took 680.37ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 72.5MB in the end (delta: 4.3MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-11-23 16:48:32,403 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 55.0MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:32,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.37ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 87.2MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:48:32,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.18ms. Allocated memory is still 111.1MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:32,406 INFO L158 Benchmark]: Boogie Preprocessor took 28.85ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:32,407 INFO L158 Benchmark]: RCFGBuilder took 353.45ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 72.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:48:32,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 55.0MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.37ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 87.2MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.18ms. Allocated memory is still 111.1MB. Free memory was 87.2MB in the beginning and 85.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.85ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 84.1MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 353.45ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 72.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:48:32,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl --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 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:34,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:34,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:35,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:35,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:35,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:35,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:35,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:35,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:35,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:35,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:35,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:35,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:35,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:35,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:35,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:35,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:35,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:35,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:35,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:35,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:35,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:35,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:35,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:35,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:35,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:35,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:35,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:35,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:35,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:35,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:35,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:35,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:35,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:35,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:35,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:35,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:35,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:35,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:35,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:35,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:35,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:48:35,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:35,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:35,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:35,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:35,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:35,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:35,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:35,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:35,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:35,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:35,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:35,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:35,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:35,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:35,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:35,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:35,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:35,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:35,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:35,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:48:35,144 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:48:35,144 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:48:35,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:35,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:35,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:35,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:35,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:35,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:48:35,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:35,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:35,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:35,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:35,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:35,147 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:48:35,147 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:35,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:35,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:35,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:35,148 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_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2021-11-23 16:48:35,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:35,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:35,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:35,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:35,550 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:35,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-23 16:48:35,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/b256b3c55/4d6409e8a97e40d9ba043dcd5f37fb24/FLAG0211316a3 [2021-11-23 16:48:36,199 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:36,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2021-11-23 16:48:36,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/b256b3c55/4d6409e8a97e40d9ba043dcd5f37fb24/FLAG0211316a3 [2021-11-23 16:48:36,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/data/b256b3c55/4d6409e8a97e40d9ba043dcd5f37fb24 [2021-11-23 16:48:36,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:36,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:36,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:36,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:36,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:36,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446cabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36, skipping insertion in model container [2021-11-23 16:48:36,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:36,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:36,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-23 16:48:36,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:36,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:36,874 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2021-11-23 16:48:36,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:36,891 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:36,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36 WrapperNode [2021-11-23 16:48:36,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:36,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:36,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:36,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:36,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,933 INFO L137 Inliner]: procedures = 19, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-11-23 16:48:36,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:36,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:36,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:36,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:36,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:36,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:36,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:36,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:36,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (1/1) ... [2021-11-23 16:48:36,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:37,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:37,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:48:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:48:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-23 16:48:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:48:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-23 16:48:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:48:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:48:37,136 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:37,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:37,936 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:37,943 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:48:37,943 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 16:48:37,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:37 BoogieIcfgContainer [2021-11-23 16:48:37,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:48:37,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:48:37,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:48:37,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:48:37,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:48:36" (1/3) ... [2021-11-23 16:48:37,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b4c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:37, skipping insertion in model container [2021-11-23 16:48:37,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:36" (2/3) ... [2021-11-23 16:48:37,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b4c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:37, skipping insertion in model container [2021-11-23 16:48:37,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:37" (3/3) ... [2021-11-23 16:48:37,960 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-11-23 16:48:37,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:48:37,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:48:38,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:48:38,062 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:48:38,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:48:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 16:48:38,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:38,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:38,101 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:38,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-11-23 16:48:38,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:38,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115612744] [2021-11-23 16:48:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:38,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:38,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:38,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:48:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:38,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 16:48:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:38,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:38,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:38,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115612744] [2021-11-23 16:48:38,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115612744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:38,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:38,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:48:38,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111347037] [2021-11-23 16:48:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:38,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 16:48:38,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 16:48:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:48:38,359 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:38,376 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-11-23 16:48:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 16:48:38,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 16:48:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:38,388 INFO L225 Difference]: With dead ends: 50 [2021-11-23 16:48:38,388 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 16:48:38,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:48:38,395 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:38,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:48:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 16:48:38,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 16:48:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-11-23 16:48:38,448 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-11-23 16:48:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:38,449 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-23 16:48:38,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-11-23 16:48:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 16:48:38,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:38,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:38,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:38,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:38,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-11-23 16:48:38,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:38,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113020018] [2021-11-23 16:48:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:38,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:38,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:38,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:38,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:48:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:38,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 16:48:38,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:39,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:39,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113020018] [2021-11-23 16:48:39,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113020018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:39,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:39,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 16:48:39,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594568992] [2021-11-23 16:48:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:39,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 16:48:39,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 16:48:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:48:39,165 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:39,219 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-11-23 16:48:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:48:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 16:48:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:39,224 INFO L225 Difference]: With dead ends: 28 [2021-11-23 16:48:39,224 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 16:48:39,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:48:39,233 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:39,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2021-11-23 16:48:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 16:48:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 16:48:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-23 16:48:39,246 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-11-23 16:48:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:39,247 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-23 16:48:39,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-23 16:48:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 16:48:39,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:39,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:39,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:39,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:39,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -64453298, now seen corresponding path program 1 times [2021-11-23 16:48:39,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:39,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490653854] [2021-11-23 16:48:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:39,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:39,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:39,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:48:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:39,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 16:48:39,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:39,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:39,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490653854] [2021-11-23 16:48:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490653854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:39,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:39,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 16:48:39,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911078491] [2021-11-23 16:48:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:39,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 16:48:39,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 16:48:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:48:39,790 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:40,120 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-23 16:48:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 16:48:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 16:48:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:40,121 INFO L225 Difference]: With dead ends: 34 [2021-11-23 16:48:40,121 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 16:48:40,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:48:40,123 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:40,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 16:48:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 16:48:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 16:48:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-23 16:48:40,135 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-11-23 16:48:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:40,135 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-23 16:48:40,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-23 16:48:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 16:48:40,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:40,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:40,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:40,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:40,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-11-23 16:48:40,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:40,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932600773] [2021-11-23 16:48:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:40,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:40,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:40,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:40,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 16:48:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:40,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 16:48:40,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:40,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:40,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:40,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932600773] [2021-11-23 16:48:40,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932600773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:40,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:40,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 16:48:40,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337762351] [2021-11-23 16:48:40,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:40,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:48:40,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:40,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:48:40,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:48:40,689 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:40,691 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-23 16:48:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 16:48:40,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 16:48:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:40,692 INFO L225 Difference]: With dead ends: 18 [2021-11-23 16:48:40,692 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 16:48:40,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:48:40,694 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:40,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2021-11-23 16:48:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 16:48:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 16:48:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 16:48:40,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-23 16:48:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:40,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 16:48:40,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 16:48:40,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 16:48:40,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 16:48:40,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-23 16:48:40,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:40,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 16:48:40,979 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-11-23 16:48:40,980 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-11-23 16:48:40,980 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-23 16:48:40,980 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 16:48:40,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 16:48:40,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 16:48:40,981 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2021-11-23 16:48:40,981 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-11-23 16:48:40,981 INFO L861 garLoopResultBuilder]: At program point L78(lines 61 79) the Hoare annotation is: true [2021-11-23 16:48:40,981 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2021-11-23 16:48:40,982 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-23 16:48:40,982 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 16:48:40,982 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2021-11-23 16:48:40,982 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-11-23 16:48:40,982 INFO L858 garLoopResultBuilder]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2021-11-23 16:48:40,983 INFO L858 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2021-11-23 16:48:40,983 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2021-11-23 16:48:40,983 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-11-23 16:48:40,983 INFO L854 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2021-11-23 16:48:40,983 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2021-11-23 16:48:40,984 INFO L854 garLoopResultBuilder]: At program point L55(lines 15 56) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_#res#1|)) [2021-11-23 16:48:40,984 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-23 16:48:40,984 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_~x#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-23 16:48:40,984 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2021-11-23 16:48:40,985 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-11-23 16:48:40,985 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2021-11-23 16:48:40,988 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 16:48:40,990 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 16:48:41,003 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 16:48:41,005 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 16:48:41,006 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 16:48:41,007 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 16:48:41,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:48:41 BoogieIcfgContainer [2021-11-23 16:48:41,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 16:48:41,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 16:48:41,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 16:48:41,009 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 16:48:41,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:37" (3/4) ... [2021-11-23 16:48:41,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 16:48:41,024 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-23 16:48:41,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-23 16:48:41,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 16:48:41,025 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 16:48:41,051 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-23 16:48:41,052 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-23 16:48:41,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 16:48:41,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 16:48:41,065 INFO L158 Benchmark]: Toolchain (without parser) took 4488.32ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.1MB in the beginning and 40.2MB in the end (delta: -6.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,066 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:41,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 37.5MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.69ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 35.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,067 INFO L158 Benchmark]: Boogie Preprocessor took 34.53ms. Allocated memory is still 56.6MB. Free memory was 35.8MB in the beginning and 34.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,068 INFO L158 Benchmark]: RCFGBuilder took 977.53ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.2MB in the beginning and 56.8MB in the end (delta: -22.5MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,068 INFO L158 Benchmark]: TraceAbstraction took 3058.56ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 43.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,069 INFO L158 Benchmark]: Witness Printer took 56.16ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 40.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:41,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 37.5MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.69ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 35.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.53ms. Allocated memory is still 56.6MB. Free memory was 35.8MB in the beginning and 34.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 977.53ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.2MB in the beginning and 56.8MB in the end (delta: -22.5MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3058.56ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 43.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Witness Printer took 56.16ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 40.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 71 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 4 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 10 QuantifiedInterpolants, 197 SizeOfPredicates, 26 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 33 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 18]: Loop Invariant [2021-11-23 16:48:41,081 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-23 16:48:41,082 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2021-11-23 16:48:41,082 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 16:48:41,083 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) RESULT: Ultimate proved your program to be correct! [2021-11-23 16:48:41,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ceefcf-c758-4c39-94ae-06920e0dba82/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE