./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9192ebbb056e27a8831cb8246a8c32082898b28d ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9192ebbb056e27a8831cb8246a8c32082898b28d .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:06:53,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:06:53,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:06:53,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:06:53,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:06:53,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:06:53,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:06:53,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:06:53,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:06:53,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:06:53,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:06:53,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:06:53,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:06:53,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:06:53,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:06:53,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:06:53,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:06:53,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:06:53,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:06:53,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:06:53,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:06:53,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:06:53,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:06:53,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:06:53,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:06:53,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:06:53,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:06:53,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:06:53,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:06:53,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:06:53,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:06:53,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:06:53,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:06:53,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:06:53,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:06:53,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:06:53,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:06:53,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:06:53,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:06:53,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:06:53,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:06:53,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:06:53,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:06:53,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:06:53,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:06:53,544 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:06:53,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:06:53,544 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:06:53,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:06:53,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:06:53,545 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:06:53,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:06:53,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:06:53,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:06:53,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:06:53,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:06:53,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:06:53,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:06:53,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:06:53,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:06:53,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:06:53,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:06:53,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-12-09 09:06:53,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:06:53,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:06:53,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:06:53,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:06:53,749 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:06:53,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-12-09 09:06:53,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/6e6b9de0b/13ad8ed089e24767ab397cccb4c19763/FLAG88204af61 [2020-12-09 09:06:54,148 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:06:54,148 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-12-09 09:06:54,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/6e6b9de0b/13ad8ed089e24767ab397cccb4c19763/FLAG88204af61 [2020-12-09 09:06:54,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/6e6b9de0b/13ad8ed089e24767ab397cccb4c19763 [2020-12-09 09:06:54,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:06:54,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:06:54,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:06:54,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:06:54,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:06:54,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa554a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54, skipping insertion in model container [2020-12-09 09:06:54,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:06:54,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:06:54,304 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2020-12-09 09:06:54,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:06:54,312 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:06:54,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2020-12-09 09:06:54,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:06:54,339 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:06:54,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54 WrapperNode [2020-12-09 09:06:54,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:06:54,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:06:54,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:06:54,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:06:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:06:54,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:06:54,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:06:54,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:06:54,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... [2020-12-09 09:06:54,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:06:54,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:06:54,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:06:54,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:06:54,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 09:06:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:06:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:06:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 09:06:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:06:54,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:06:54,760 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 09:06:54,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:54 BoogieIcfgContainer [2020-12-09 09:06:54,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:06:54,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:06:54,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:06:54,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:06:54,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:06:54" (1/3) ... [2020-12-09 09:06:54,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb2b1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:06:54, skipping insertion in model container [2020-12-09 09:06:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:54" (2/3) ... [2020-12-09 09:06:54,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb2b1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:06:54, skipping insertion in model container [2020-12-09 09:06:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:54" (3/3) ... [2020-12-09 09:06:54,769 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-12-09 09:06:54,782 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:06:54,785 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:06:54,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:06:54,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:06:54,812 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:06:54,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:06:54,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:06:54,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:06:54,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:06:54,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:06:54,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:06:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 09:06:54,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:06:54,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:06:54,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:06:54,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:06:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:06:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1229350991, now seen corresponding path program 1 times [2020-12-09 09:06:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:06:54,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460512240] [2020-12-09 09:06:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:06:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:06:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:06:54,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460512240] [2020-12-09 09:06:54,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:06:54,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:06:54,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104743255] [2020-12-09 09:06:54,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 09:06:54,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:06:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 09:06:54,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:06:54,963 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 09:06:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:06:54,973 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-12-09 09:06:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 09:06:54,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 09:06:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:06:54,980 INFO L225 Difference]: With dead ends: 31 [2020-12-09 09:06:54,980 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 09:06:54,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:06:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 09:06:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 09:06:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 09:06:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-09 09:06:55,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-12-09 09:06:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:06:55,005 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-09 09:06:55,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 09:06:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-09 09:06:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:06:55,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:06:55,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:06:55,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:06:55,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:06:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:06:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1601340958, now seen corresponding path program 1 times [2020-12-09 09:06:55,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:06:55,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12629268] [2020-12-09 09:06:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:06:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:06:55,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:06:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:06:55,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:06:55,098 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:06:55,098 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:06:55,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:06:55,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:06:55 BoogieIcfgContainer [2020-12-09 09:06:55,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:06:55,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:06:55,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:06:55,118 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:06:55,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:54" (3/4) ... [2020-12-09 09:06:55,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:06:55,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:06:55,122 INFO L168 Benchmark]: Toolchain (without parser) took 951.07 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 61.3 MB in the beginning and 71.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:06:55,123 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:06:55,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.67 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 50.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:06:55,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 49.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:06:55,124 INFO L168 Benchmark]: Boogie Preprocessor took 19.43 ms. Allocated memory is still 81.8 MB. Free memory was 49.2 MB in the beginning and 47.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:06:55,125 INFO L168 Benchmark]: RCFGBuilder took 374.58 ms. Allocated memory is still 81.8 MB. Free memory was 47.9 MB in the beginning and 41.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:06:55,125 INFO L168 Benchmark]: TraceAbstraction took 353.55 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 40.7 MB in the beginning and 72.5 MB in the end (delta: -31.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:06:55,126 INFO L168 Benchmark]: Witness Printer took 3.16 ms. Allocated memory is still 104.9 MB. Free memory was 72.5 MB in the beginning and 71.9 MB in the end (delta: 598.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:06:55,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.67 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 50.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 49.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.43 ms. Allocated memory is still 81.8 MB. Free memory was 49.2 MB in the beginning and 47.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 374.58 ms. Allocated memory is still 81.8 MB. Free memory was 47.9 MB in the beginning and 41.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 353.55 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 40.7 MB in the beginning and 72.5 MB in the end (delta: -31.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.16 ms. Allocated memory is still 104.9 MB. Free memory was 72.5 MB in the beginning and 71.9 MB in the end (delta: 598.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L68] float x = 0.0f / 0.0f; [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L26] COND FALSE !(j0 < 23) [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; VAL [huge_floor=1000000000000000000000000000000] [L69] float res = floor_float(x); [L60] return x != x; [L72] COND TRUE !isnan_float(res) [L73] reach_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:06:56,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:06:56,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:06:56,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:06:56,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:06:56,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:06:56,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:06:56,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:06:56,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:06:56,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:06:56,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:06:56,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:06:56,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:06:56,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:06:56,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:06:56,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:06:56,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:06:56,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:06:56,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:06:56,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:06:56,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:06:56,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:06:56,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:06:56,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:06:56,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:06:56,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:06:56,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:06:56,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:06:56,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:06:56,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:06:56,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:06:56,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:06:56,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:06:56,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:06:56,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:06:56,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:06:56,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:06:56,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:06:56,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:06:56,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:06:56,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:06:56,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 09:06:56,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:06:56,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:06:56,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:06:56,768 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:06:56,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:06:56,768 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:06:56,769 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:06:56,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:06:56,769 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:06:56,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:06:56,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:06:56,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:06:56,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:06:56,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:06:56,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:06:56,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:06:56,771 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:06:56,771 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:06:56,771 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:06:56,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:06:56,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:06:56,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:06:56,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:06:56,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:06:56,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:06:56,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:06:56,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:06:56,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:06:56,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:06:56,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:06:56,774 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:06:56,774 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:06:56,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:06:56,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:06:56,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:06:56,775 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2020-12-09 09:06:56,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:06:57,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:06:57,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:06:57,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:06:57,012 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:06:57,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-12-09 09:06:57,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/cd5515629/e54c3a731e1a41a4bff2b118a8055aa4/FLAG2be07e2ca [2020-12-09 09:06:57,441 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:06:57,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2020-12-09 09:06:57,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/cd5515629/e54c3a731e1a41a4bff2b118a8055aa4/FLAG2be07e2ca [2020-12-09 09:06:57,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/data/cd5515629/e54c3a731e1a41a4bff2b118a8055aa4 [2020-12-09 09:06:57,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:06:57,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:06:57,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:06:57,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:06:57,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:06:57,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4fda59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57, skipping insertion in model container [2020-12-09 09:06:57,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:06:57,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:06:57,585 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2020-12-09 09:06:57,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:06:57,598 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:06:57,618 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2020-12-09 09:06:57,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:06:57,634 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:06:57,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57 WrapperNode [2020-12-09 09:06:57,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:06:57,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:06:57,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:06:57,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:06:57,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:06:57,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:06:57,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:06:57,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:06:57,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... [2020-12-09 09:06:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:06:57,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:06:57,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:06:57,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:06:57,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:06:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:06:57,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 09:06:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:06:58,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:06:58,341 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 09:06:58,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:58 BoogieIcfgContainer [2020-12-09 09:06:58,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:06:58,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:06:58,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:06:58,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:06:58,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:06:57" (1/3) ... [2020-12-09 09:06:58,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231318a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:06:58, skipping insertion in model container [2020-12-09 09:06:58,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:06:57" (2/3) ... [2020-12-09 09:06:58,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231318a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:06:58, skipping insertion in model container [2020-12-09 09:06:58,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:58" (3/3) ... [2020-12-09 09:06:58,349 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-12-09 09:06:58,363 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:06:58,366 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:06:58,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:06:58,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:06:58,391 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:06:58,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:06:58,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:06:58,391 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:06:58,391 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:06:58,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:06:58,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:06:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-09 09:06:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:06:58,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:06:58,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:06:58,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:06:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:06:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-12-09 09:06:58,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:06:58,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605770892] [2020-12-09 09:06:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 09:06:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:06:58,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 09:06:58,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:06:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:06:58,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:06:58,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605770892] [2020-12-09 09:06:58,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:06:58,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:06:58,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710063887] [2020-12-09 09:06:58,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 09:06:58,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:06:58,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 09:06:58,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:06:58,550 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-09 09:06:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:06:58,564 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2020-12-09 09:06:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 09:06:58,565 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 09:06:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:06:58,573 INFO L225 Difference]: With dead ends: 50 [2020-12-09 09:06:58,573 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 09:06:58,575 INFO L677 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 [2020-12-09 09:06:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 09:06:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 09:06:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 09:06:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-09 09:06:58,604 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-12-09 09:06:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:06:58,604 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-09 09:06:58,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 09:06:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-09 09:06:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:06:58,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:06:58,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:06:58,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:06:58,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:06:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:06:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-12-09 09:06:58,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:06:58,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456552902] [2020-12-09 09:06:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 09:06:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:06:58,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:06:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:06:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:06:58,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:06:58,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456552902] [2020-12-09 09:06:58,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:06:58,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:06:58,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832118947] [2020-12-09 09:06:58,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:06:58,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:06:59,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:06:59,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:06:59,000 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 6 states. [2020-12-09 09:06:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:06:59,394 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-12-09 09:06:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:06:59,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 09:06:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:06:59,394 INFO L225 Difference]: With dead ends: 34 [2020-12-09 09:06:59,395 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 09:06:59,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:06:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 09:06:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 09:06:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 09:06:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-09 09:06:59,398 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-12-09 09:06:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:06:59,398 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-09 09:06:59,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:06:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-09 09:06:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 09:06:59,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:06:59,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:06:59,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 09:06:59,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:06:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:06:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-12-09 09:06:59,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:06:59,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947216656] [2020-12-09 09:06:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 09:06:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:06:59,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:06:59,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:06:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:06:59,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:06:59,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947216656] [2020-12-09 09:06:59,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:06:59,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:06:59,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54383025] [2020-12-09 09:06:59,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:06:59,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:06:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:06:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:06:59,840 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-12-09 09:06:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:06:59,923 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 09:06:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:06:59,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 09:06:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:06:59,923 INFO L225 Difference]: With dead ends: 18 [2020-12-09 09:06:59,923 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:06:59,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:06:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:06:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:06:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:06:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:06:59,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 09:06:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:06:59,924 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:06:59,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:06:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:06:59,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:07:00,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 09:07:00,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:07:00,214 INFO L262 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-12-09 09:07:00,214 INFO L258 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L27(lines 27 44) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L258 CegarLoopResult]: At program point L56(lines 16 57) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_floor_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x))) [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_floor_float_~x)) [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L265 CegarLoopResult]: At program point L77(lines 62 78) the Hoare annotation is: true [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L40-2(lines 40 41) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2020-12-09 09:07:00,215 INFO L262 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L46(lines 46 49) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L26(lines 26 50) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L51(lines 51 55) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L51-1(lines 16 57) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2020-12-09 09:07:00,216 INFO L262 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-12-09 09:07:00,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:07:00 BoogieIcfgContainer [2020-12-09 09:07:00,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:07:00,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:07:00,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:07:00,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:07:00,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:06:58" (3/4) ... [2020-12-09 09:07:00,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:07:00,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 09:07:00,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 09:07:00,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:07:00,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:07:00,254 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 09:07:00,254 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 09:07:00,255 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 09:07:00,268 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cfbaeabc-3da5-47a4-ab33-6c7efa534f27/bin/utaipan/witness.graphml [2020-12-09 09:07:00,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:07:00,270 INFO L168 Benchmark]: Toolchain (without parser) took 2810.03 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 32.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,270 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:00,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.71 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 29.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.58 ms. Allocated memory is still 58.7 MB. Free memory was 29.0 MB in the beginning and 42.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,271 INFO L168 Benchmark]: Boogie Preprocessor took 23.20 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:00,272 INFO L168 Benchmark]: RCFGBuilder took 640.10 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 40.6 MB in the beginning and 55.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,272 INFO L168 Benchmark]: TraceAbstraction took 1884.21 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 35.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,272 INFO L168 Benchmark]: Witness Printer took 40.66 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 32.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:00,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.71 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 29.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.58 ms. Allocated memory is still 58.7 MB. Free memory was 29.0 MB in the beginning and 42.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.20 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 640.10 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 40.6 MB in the beginning and 55.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1884.21 ms. Allocated memory is still 75.5 MB. Free memory was 55.2 MB in the beginning and 35.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 40.66 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 32.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-12-09 09:07:00,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 60]: Loop Invariant [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,280 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 09:07:00,280 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 49 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 10 QuantifiedInterpolants, 1505 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...