./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/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 3712292932a14caaa681695c17d35c29cbe1c2a4 ....................................................................................................................................................................................................................................................................................................... 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/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 3712292932a14caaa681695c17d35c29cbe1c2a4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:33:48,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:33:48,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:33:48,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:33:48,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:33:48,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:33:48,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:33:48,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:33:48,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:33:48,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:33:48,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:33:48,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:33:48,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:33:48,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:33:48,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:33:48,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:33:48,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:33:48,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:33:48,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:33:48,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:33:48,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:33:48,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:33:48,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:33:48,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:33:48,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:33:48,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:33:48,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:33:48,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:33:48,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:33:48,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:33:48,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:33:48,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:33:48,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:33:48,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:33:48,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:33:48,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:33:48,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:33:48,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:33:48,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:33:48,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:33:48,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:33:48,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:33:48,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:33:48,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:33:48,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:33:48,526 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:33:48,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:33:48,527 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:33:48,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:33:48,527 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:33:48,527 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:33:48,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:33:48,529 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:33:48,530 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:33:48,530 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:33:48,530 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:33:48,531 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:33:48,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:33:48,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:33:48,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:33:48,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:33:48,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:33:48,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:33:48,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:33:48,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:33:48,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:33:48,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:33:48,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:33:48,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:33:48,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:33:48,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:33:48,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:33:48,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:48,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:33:48,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:33:48,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:33:48,539 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:33:48,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:33:48,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:33:48,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:33:48,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:33:48,540 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-12-03 12:33:48,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:33:48,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:33:48,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:33:48,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:33:48,833 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:33:48,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-12-03 12:33:48,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/2393b386a/8b0de6435c5c4a9091d7f55391da5067/FLAG5750a6839 [2020-12-03 12:33:49,424 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:33:49,424 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-12-03 12:33:49,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/2393b386a/8b0de6435c5c4a9091d7f55391da5067/FLAG5750a6839 [2020-12-03 12:33:49,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/2393b386a/8b0de6435c5c4a9091d7f55391da5067 [2020-12-03 12:33:49,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:33:49,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:33:49,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:49,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:33:49,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:33:49,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:49" (1/1) ... [2020-12-03 12:33:49,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abc5ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:49, skipping insertion in model container [2020-12-03 12:33:49,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:49" (1/1) ... [2020-12-03 12:33:49,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:33:49,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:33:49,997 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2020-12-03 12:33:50,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:50,041 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:33:50,066 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2020-12-03 12:33:50,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:50,082 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:33:50,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50 WrapperNode [2020-12-03 12:33:50,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:50,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:50,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:33:50,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:33:50,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:50,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:33:50,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:33:50,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:33:50,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... [2020-12-03 12:33:50,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:33:50,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:33:50,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:33:50,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:33:50,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:33:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:33:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-03 12:33:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:33:50,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:33:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:33:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:33:51,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:33:51,063 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-03 12:33:51,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:51 BoogieIcfgContainer [2020-12-03 12:33:51,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:33:51,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:33:51,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:33:51,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:33:51,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:33:49" (1/3) ... [2020-12-03 12:33:51,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250f3c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:51, skipping insertion in model container [2020-12-03 12:33:51,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:50" (2/3) ... [2020-12-03 12:33:51,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250f3c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:51, skipping insertion in model container [2020-12-03 12:33:51,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:51" (3/3) ... [2020-12-03 12:33:51,075 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-12-03 12:33:51,088 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:33:51,091 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:33:51,100 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:33:51,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:33:51,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:33:51,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:33:51,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:33:51,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:33:51,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:33:51,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:33:51,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:33:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-03 12:33:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:33:51,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:51,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:51,146 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1734057867, now seen corresponding path program 1 times [2020-12-03 12:33:51,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:51,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414628258] [2020-12-03 12:33:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:51,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414628258] [2020-12-03 12:33:51,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:51,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:33:51,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330009085] [2020-12-03 12:33:51,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:33:51,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:51,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:33:51,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:33:51,325 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-03 12:33:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:51,341 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-03 12:33:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:33:51,343 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-03 12:33:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:51,352 INFO L225 Difference]: With dead ends: 27 [2020-12-03 12:33:51,352 INFO L226 Difference]: Without dead ends: 12 [2020-12-03 12:33:51,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:33:51,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-03 12:33:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-03 12:33:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-03 12:33:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-03 12:33:51,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-12-03 12:33:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:51,410 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-03 12:33:51,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:33:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-03 12:33:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:33:51,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:51,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:51,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:33:51,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1296744756, now seen corresponding path program 1 times [2020-12-03 12:33:51,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:51,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915674527] [2020-12-03 12:33:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:33:51,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:33:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:33:51,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:33:51,676 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:33:51,676 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:33:51,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:33:51,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:33:51 BoogieIcfgContainer [2020-12-03 12:33:51,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:33:51,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:33:51,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:33:51,712 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:33:51,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:51" (3/4) ... [2020-12-03 12:33:51,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:33:51,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:33:51,718 INFO L168 Benchmark]: Toolchain (without parser) took 1924.84 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 66.0 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:51,719 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:51,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.17 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.3 MB in the beginning and 73.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:51,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.73 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:51,722 INFO L168 Benchmark]: Boogie Preprocessor took 46.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:51,723 INFO L168 Benchmark]: RCFGBuilder took 858.76 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 61.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:51,723 INFO L168 Benchmark]: TraceAbstraction took 644.39 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 66.4 MB in the end (delta: -5.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:51,724 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 66.0 MB in the end (delta: 490.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:51,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.17 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.3 MB in the beginning and 73.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.73 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 858.76 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 61.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 644.39 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 66.4 MB in the end (delta: -5.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 66.0 MB in the end (delta: 490.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] float res = fmin_float(x, y); [L46] return x != x; [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=14occurred 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, 0.1s 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 [2020-12-03 12:33:54,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:33:54,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:33:54,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:33:54,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:33:54,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:33:54,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:33:54,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:33:54,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:33:54,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:33:54,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:33:54,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:33:54,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:33:54,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:33:54,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:33:54,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:33:54,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:33:54,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:33:54,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:33:54,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:33:54,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:33:54,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:33:54,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:33:54,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:33:54,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:33:54,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:33:54,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:33:54,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:33:54,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:33:54,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:33:54,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:33:54,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:33:54,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:33:54,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:33:54,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:33:54,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:33:54,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:33:54,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:33:54,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:33:54,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:33:54,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:33:54,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:33:54,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:33:54,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:33:54,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:33:54,606 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:33:54,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:33:54,607 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:33:54,608 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:33:54,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:33:54,608 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:33:54,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:33:54,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:33:54,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:33:54,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:33:54,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:33:54,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:33:54,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:33:54,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:33:54,614 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:33:54,614 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:33:54,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:33:54,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:33:54,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:33:54,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:33:54,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:33:54,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:33:54,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:33:54,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:54,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:33:54,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:33:54,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:33:54,618 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:33:54,618 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:33:54,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:33:54,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:33:54,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:33:54,620 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-12-03 12:33:55,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:33:55,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:33:55,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:33:55,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:33:55,135 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:33:55,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-12-03 12:33:55,231 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/67893cdd3/89c0ba2a423644018d0be3faa42b00fc/FLAG0a6430906 [2020-12-03 12:33:55,849 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:33:55,850 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-12-03 12:33:55,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/67893cdd3/89c0ba2a423644018d0be3faa42b00fc/FLAG0a6430906 [2020-12-03 12:33:55,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/data/67893cdd3/89c0ba2a423644018d0be3faa42b00fc [2020-12-03 12:33:55,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:33:55,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:33:55,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:55,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:33:55,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:33:55,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:55" (1/1) ... [2020-12-03 12:33:55,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625fde93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:55, skipping insertion in model container [2020-12-03 12:33:55,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:55" (1/1) ... [2020-12-03 12:33:55,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:33:55,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:33:56,083 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2020-12-03 12:33:56,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:56,107 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:33:56,172 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_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2020-12-03 12:33:56,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:56,196 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:33:56,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56 WrapperNode [2020-12-03 12:33:56,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:56,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:56,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:33:56,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:33:56,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:56,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:33:56,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:33:56,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:33:56,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:33:56,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:33:56,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:33:56,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:33:56,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:33:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:33:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-03 12:33:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:33:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:33:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-03 12:33:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:33:56,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:33:56,971 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-03 12:33:56,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:56 BoogieIcfgContainer [2020-12-03 12:33:56,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:33:56,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:33:56,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:33:56,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:33:56,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:33:55" (1/3) ... [2020-12-03 12:33:56,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1c9e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:56, skipping insertion in model container [2020-12-03 12:33:56,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (2/3) ... [2020-12-03 12:33:56,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1c9e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:56, skipping insertion in model container [2020-12-03 12:33:56,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:56" (3/3) ... [2020-12-03 12:33:56,988 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-12-03 12:33:57,004 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:33:57,008 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:33:57,021 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:33:57,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:33:57,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:33:57,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:33:57,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:33:57,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:33:57,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:33:57,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:33:57,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:33:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-03 12:33:57,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:33:57,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:57,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:57,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:57,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-12-03 12:33:57,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:57,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768584945] [2020-12-03 12:33:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:57,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-03 12:33:57,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:57,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:57,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768584945] [2020-12-03 12:33:57,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:57,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:33:57,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525578854] [2020-12-03 12:33:57,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:33:57,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:57,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:33:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:33:57,375 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-03 12:33:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:57,406 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2020-12-03 12:33:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:33:57,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-03 12:33:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:57,426 INFO L225 Difference]: With dead ends: 54 [2020-12-03 12:33:57,426 INFO L226 Difference]: Without dead ends: 25 [2020-12-03 12:33:57,430 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 [2020-12-03 12:33:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-03 12:33:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-03 12:33:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-03 12:33:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-03 12:33:57,466 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-12-03 12:33:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:57,466 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-03 12:33:57,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:33:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-03 12:33:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:33:57,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:57,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:57,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:33:57,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-12-03 12:33:57,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:57,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348253802] [2020-12-03 12:33:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:57,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:33:57,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:57,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348253802] [2020-12-03 12:33:57,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:57,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:57,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821929585] [2020-12-03 12:33:57,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:33:57,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:33:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:57,882 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-12-03 12:33:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:57,976 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-03 12:33:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:33:57,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:33:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:57,978 INFO L225 Difference]: With dead ends: 41 [2020-12-03 12:33:57,978 INFO L226 Difference]: Without dead ends: 36 [2020-12-03 12:33:57,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-03 12:33:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-03 12:33:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:33:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-03 12:33:57,987 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-12-03 12:33:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:57,988 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-03 12:33:57,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:33:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-03 12:33:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:33:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:57,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:58,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 12:33:58,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-12-03 12:33:58,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:58,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732276491] [2020-12-03 12:33:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:58,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:33:58,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:58,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:58,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732276491] [2020-12-03 12:33:58,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:58,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:58,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633910576] [2020-12-03 12:33:58,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:33:58,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:58,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:33:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:58,304 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-03 12:33:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:58,385 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-03 12:33:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:33:58,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-03 12:33:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:58,387 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:33:58,388 INFO L226 Difference]: Without dead ends: 38 [2020-12-03 12:33:58,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-03 12:33:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-03 12:33:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:33:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-03 12:33:58,395 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-12-03 12:33:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:58,395 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-03 12:33:58,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:33:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-03 12:33:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:33:58,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:58,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:58,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-03 12:33:58,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-12-03 12:33:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:58,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169380487] [2020-12-03 12:33:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:58,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:33:58,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:58,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:58,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169380487] [2020-12-03 12:33:58,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:58,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:58,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597619098] [2020-12-03 12:33:58,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:33:58,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:33:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:58,773 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-03 12:33:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:58,865 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-03 12:33:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:33:58,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-03 12:33:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:58,867 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:33:58,867 INFO L226 Difference]: Without dead ends: 38 [2020-12-03 12:33:58,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-03 12:33:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-03 12:33:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:33:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-03 12:33:58,882 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-12-03 12:33:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:58,882 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-03 12:33:58,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:33:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-03 12:33:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-03 12:33:58,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:58,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:59,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-03 12:33:59,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-12-03 12:33:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:59,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718632520] [2020-12-03 12:33:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:59,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:33:59,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:59,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:59,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718632520] [2020-12-03 12:33:59,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:59,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:33:59,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227069928] [2020-12-03 12:33:59,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:33:59,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:33:59,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:59,205 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-03 12:33:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:59,319 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-03 12:33:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:33:59,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-03 12:33:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:59,321 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:33:59,321 INFO L226 Difference]: Without dead ends: 38 [2020-12-03 12:33:59,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:33:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-03 12:33:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-03 12:33:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:33:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-03 12:33:59,336 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-12-03 12:33:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:59,337 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-03 12:33:59,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:33:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-03 12:33:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-03 12:33:59,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:59,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:33:59,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-03 12:33:59,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-12-03 12:33:59,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:33:59,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791887943] [2020-12-03 12:33:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-03 12:33:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:59,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:33:59,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:59,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:33:59,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791887943] [2020-12-03 12:33:59,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:59,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:33:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517355181] [2020-12-03 12:33:59,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:33:59,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:33:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:33:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:33:59,759 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 6 states. [2020-12-03 12:33:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:59,987 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-12-03 12:33:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:33:59,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-03 12:33:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:59,989 INFO L225 Difference]: With dead ends: 36 [2020-12-03 12:33:59,989 INFO L226 Difference]: Without dead ends: 27 [2020-12-03 12:33:59,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:33:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-03 12:33:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-03 12:33:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-03 12:33:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-12-03 12:33:59,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-12-03 12:33:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:59,996 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-12-03 12:33:59,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:33:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-12-03 12:33:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 12:33:59,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:59,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:00,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-03 12:34:00,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:00,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-12-03 12:34:00,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:00,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570307390] [2020-12-03 12:34:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:00,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:34:00,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:00,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:00,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570307390] [2020-12-03 12:34:00,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:00,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:34:00,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121839641] [2020-12-03 12:34:00,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:34:00,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:34:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:34:00,345 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2020-12-03 12:34:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:00,413 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-12-03 12:34:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:34:00,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-03 12:34:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:00,415 INFO L225 Difference]: With dead ends: 41 [2020-12-03 12:34:00,415 INFO L226 Difference]: Without dead ends: 36 [2020-12-03 12:34:00,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:34:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-03 12:34:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-03 12:34:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:34:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-03 12:34:00,421 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-12-03 12:34:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:00,441 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-03 12:34:00,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:34:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-03 12:34:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:34:00,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:34:00,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:00,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-03 12:34:00,643 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash 874917212, now seen corresponding path program 1 times [2020-12-03 12:34:00,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:00,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021791138] [2020-12-03 12:34:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:00,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:34:00,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:00,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:00,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021791138] [2020-12-03 12:34:00,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:00,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:34:00,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151918460] [2020-12-03 12:34:00,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:34:00,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:00,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:34:00,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:34:00,755 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2020-12-03 12:34:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:00,831 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-03 12:34:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:34:00,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-03 12:34:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:00,833 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:34:00,833 INFO L226 Difference]: Without dead ends: 38 [2020-12-03 12:34:00,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:34:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-03 12:34:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-03 12:34:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-03 12:34:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-03 12:34:00,840 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 17 [2020-12-03 12:34:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:00,840 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-03 12:34:00,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:34:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-03 12:34:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:34:00,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:34:00,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:01,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-03 12:34:01,066 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:01,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-12-03 12:34:01,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:01,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611863027] [2020-12-03 12:34:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:01,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-03 12:34:01,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:01,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:01,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611863027] [2020-12-03 12:34:01,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:01,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:34:01,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598719096] [2020-12-03 12:34:01,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:34:01,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:01,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:34:01,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:34:01,310 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 7 states. [2020-12-03 12:34:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:01,622 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-12-03 12:34:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:34:01,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-03 12:34:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:01,631 INFO L225 Difference]: With dead ends: 32 [2020-12-03 12:34:01,631 INFO L226 Difference]: Without dead ends: 23 [2020-12-03 12:34:01,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-03 12:34:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-03 12:34:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-03 12:34:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-03 12:34:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-12-03 12:34:01,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2020-12-03 12:34:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:01,636 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-12-03 12:34:01,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:34:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-03 12:34:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:34:01,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:34:01,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:01,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-03 12:34:01,848 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1049576048, now seen corresponding path program 1 times [2020-12-03 12:34:01,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:01,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131829939] [2020-12-03 12:34:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:34:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:01,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:01,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131829939] [2020-12-03 12:34:01,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:01,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:34:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628087593] [2020-12-03 12:34:01,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:34:01,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:01,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:34:01,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:34:01,980 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2020-12-03 12:34:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:02,076 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-03 12:34:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:34:02,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-03 12:34:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:02,078 INFO L225 Difference]: With dead ends: 32 [2020-12-03 12:34:02,078 INFO L226 Difference]: Without dead ends: 25 [2020-12-03 12:34:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:34:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-03 12:34:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-03 12:34:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-03 12:34:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-03 12:34:02,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-12-03 12:34:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:02,084 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-03 12:34:02,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:34:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-03 12:34:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 12:34:02,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:34:02,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:02,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-03 12:34:02,299 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1983383519, now seen corresponding path program 1 times [2020-12-03 12:34:02,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:02,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902051030] [2020-12-03 12:34:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:02,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:34:02,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:02,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:02,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902051030] [2020-12-03 12:34:02,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:02,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:34:02,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390362064] [2020-12-03 12:34:02,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:34:02,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:02,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:34:02,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:34:02,397 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-03 12:34:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:02,451 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-03 12:34:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:34:02,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-03 12:34:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:02,452 INFO L225 Difference]: With dead ends: 32 [2020-12-03 12:34:02,453 INFO L226 Difference]: Without dead ends: 25 [2020-12-03 12:34:02,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:34:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-03 12:34:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-03 12:34:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-03 12:34:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-03 12:34:02,458 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2020-12-03 12:34:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:02,458 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-03 12:34:02,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:34:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-03 12:34:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 12:34:02,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:34:02,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:34:02,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-03 12:34:02,662 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:34:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:34:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-12-03 12:34:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:34:02,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080165075] [2020-12-03 12:34:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-03 12:34:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:34:02,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:34:02,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:34:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:34:02,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:34:02,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080165075] [2020-12-03 12:34:02,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:34:02,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:34:02,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139877543] [2020-12-03 12:34:02,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:34:02,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:34:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:34:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:34:02,867 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-12-03 12:34:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:34:03,011 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-03 12:34:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:34:03,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-03 12:34:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:34:03,012 INFO L225 Difference]: With dead ends: 23 [2020-12-03 12:34:03,012 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:34:03,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:34:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:34:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:34:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:34:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:34:03,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-03 12:34:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:34:03,014 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:34:03,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:34:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:34:03,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:34:03,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-03 12:34:03,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:34:03,508 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-03 12:34:03,617 INFO L262 CegarLoopResult]: For program point L60(lines 60 63) no Hoare annotation was computed. [2020-12-03 12:34:03,617 INFO L262 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-12-03 12:34:03,617 INFO L262 CegarLoopResult]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2020-12-03 12:34:03,617 INFO L265 CegarLoopResult]: At program point L65(lines 48 66) the Hoare annotation is: true [2020-12-03 12:34:03,617 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-03 12:34:03,617 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L24-1(lines 24 33) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L258 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y))) [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L16-3(lines 13 34) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 20) no Hoare annotation was computed. [2020-12-03 12:34:03,618 INFO L258 CegarLoopResult]: At program point L16-6(lines 16 20) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y))) [2020-12-03 12:34:03,619 INFO L262 CegarLoopResult]: For program point L16-7(lines 13 34) no Hoare annotation was computed. [2020-12-03 12:34:03,619 INFO L262 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-12-03 12:34:03,619 INFO L258 CegarLoopResult]: At program point L33(lines 13 34) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y))) [2020-12-03 12:34:03,619 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:34:03,619 INFO L258 CegarLoopResult]: At program point L33-1(lines 13 34) the Hoare annotation is: (let ((.cse0 (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y)))) (or (and .cse0 (or (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse0) (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~x)) .cse0))) [2020-12-03 12:34:03,619 INFO L258 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2020-12-03 12:34:03,619 INFO L262 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-12-03 12:34:03,620 INFO L262 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-12-03 12:34:03,620 INFO L258 CegarLoopResult]: At program point L42-3(lines 36 43) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fmin_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|))) [2020-12-03 12:34:03,620 INFO L262 CegarLoopResult]: For program point L30(lines 30 33) no Hoare annotation was computed. [2020-12-03 12:34:03,620 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-12-03 12:34:03,620 INFO L262 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-12-03 12:34:03,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,629 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,636 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,637 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,646 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,646 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,647 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,648 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,649 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,649 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,649 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,650 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,651 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,652 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,652 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,652 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,653 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,653 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,654 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,654 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,659 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,659 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:34:03 BoogieIcfgContainer [2020-12-03 12:34:03,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:34:03,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:34:03,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:34:03,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:34:03,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:56" (3/4) ... [2020-12-03 12:34:03,678 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:34:03,695 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-03 12:34:03,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-03 12:34:03,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:34:03,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:34:03,729 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-03 12:34:03,730 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-03 12:34:03,730 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-12-03 12:34:03,731 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2020-12-03 12:34:03,732 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2020-12-03 12:34:03,733 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (4bv32 == \result || 2bv32 == \result)) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) [2020-12-03 12:34:03,788 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f19eb89-d6c5-41c3-bbfb-0553c49a42a8/bin/utaipan/witness.graphml [2020-12-03 12:34:03,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:34:03,790 INFO L168 Benchmark]: Toolchain (without parser) took 7913.57 ms. Allocated memory was 62.9 MB in the beginning and 107.0 MB in the end (delta: 44.0 MB). Free memory was 44.3 MB in the beginning and 57.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,791 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 62.9 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:34:03,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.97 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 45.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.57 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:34:03,793 INFO L168 Benchmark]: Boogie Preprocessor took 56.49 ms. Allocated memory is still 62.9 MB. Free memory was 44.3 MB in the beginning and 42.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,794 INFO L168 Benchmark]: RCFGBuilder took 670.88 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 62.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,795 INFO L168 Benchmark]: TraceAbstraction took 6694.80 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 61.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,795 INFO L168 Benchmark]: Witness Printer took 115.32 ms. Allocated memory is still 107.0 MB. Free memory was 61.2 MB in the beginning and 57.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:34:03,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 62.9 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.97 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 45.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.57 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 44.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.49 ms. Allocated memory is still 62.9 MB. Free memory was 44.3 MB in the beginning and 42.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 670.88 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 62.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6694.80 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 62.4 MB in the beginning and 61.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 115.32 ms. Allocated memory is still 107.0 MB. Free memory was 61.2 MB in the beginning and 57.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[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] - 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] - 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: 61]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2020-12-03 12:34:03,815 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,815 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,816 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,817 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 13]: Loop Invariant [2020-12-03 12:34:03,817 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,821 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()) == y) && (4bv32 == \result || 2bv32 == \result)) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) - InvariantResult [Line: 13]: Loop Invariant [2020-12-03 12:34:03,822 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,822 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,823 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,823 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant [2020-12-03 12:34:03,826 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,826 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,827 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,827 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()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 46]: Loop Invariant [2020-12-03 12:34:03,829 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,829 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,830 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,830 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()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant [2020-12-03 12:34:03,832 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,832 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,832 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-03 12:34:03,833 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 132 SDslu, 682 SDs, 0 SdLazy, 219 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 12 MinimizatonAttempts, 68 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 132 HoareAnnotationTreeSize, 7 FomulaSimplifications, 815 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 169 ConstructedInterpolants, 36 QuantifiedInterpolants, 6895 SizeOfPredicates, 35 NumberOfNonLiveVariables, 734 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...